Which BMW Had a V10: Unraveling the Legend of the E60 M5's Iconic Engine

Which BMW Had a V10? The Legendary S85 Engine Explained

As a lifelong automotive enthusiast, I’ve always been captivated by the symphony of a high-revving engine, and few sounds in the automotive world are as spine-tingling as a naturally aspirated V10. For many, the question "Which BMW had a V10?" immediately brings to mind one specific, incredibly potent machine: the E60 generation BMW M5. It’s a question that sparks conversations, ignites memories, and frankly, still stirs excitement even today. I remember my first encounter with the E60 M5 – it wasn't just seeing it; it was hearing it. A distant, exotic wail that hinted at something extraordinary beneath the sculpted hood. That sound, that power, that sheer audacity of putting a Formula 1-derived V10 into a four-door sedan… it's a legend that deserves to be explored in depth.

So, to answer the core of the inquiry directly: The BMW M5 (E60 generation, produced from 2005 to 2010) is the definitive answer to "Which BMW had a V10?" But this isn't just about identifying a car; it's about understanding the genesis of an engine that stands as a monument to automotive engineering prowess. This V10, codenamed the S85, was a true marvel, a technological tour de force that BMW decided to imbue into its flagship executive sport sedan. It wasn't a minor engine option; it was the heart and soul of the M5, defining its character and its place in automotive history. Let’s dive deep into what made this engine so special and why it continues to be a benchmark for automotive enthusiasts worldwide.

The Genesis of a V10: A Bold Engineering Decision

The decision by BMW M to develop a V10 engine for a production car, particularly a sedan like the M5, was, to put it mildly, audacious. In the mid-2000s, the automotive landscape was already leaning towards turbocharged downsizing and increased efficiency. Yet, BMW M, with its storied history of pushing performance boundaries, opted for a different path. The S85 V10 wasn't born out of a need for fuel economy; it was born out of a desire for ultimate performance, an unadulterated expression of what a car could be when engineering excellence was the sole guiding principle.

The inspiration for the S85 can be traced back to BMW's Formula 1 endeavors. While the F1 engines of the era were V10s, the S85 was not a direct transplant. Instead, it borrowed heavily from the *philosophy* and *technology* developed in the heat of motorsport. This meant embracing a high-revving, naturally aspirated architecture that prioritized responsiveness, a broad powerband, and that intoxicating engine note that only a V10 can truly deliver. It was a statement of intent: BMW M was not going to follow the crowd; it was going to forge its own path, creating an engine that was both a technological marvel and a driver’s dream.

The S85 Engine: A Technical Masterpiece

At the heart of the E60 M5's identity was its 5.0-liter V10 engine, the S85B50. This wasn't just any V10; it was a symphony of precision engineering, packed with features usually reserved for the racetrack. Let's break down what made this engine so extraordinary:

Displacement: 5.0 liters (4,999 cc). This gave it a substantial capacity for breathing in air and fuel, contributing to its immense power output.
Configuration: Naturally Aspirated V10. The V-angle was a tight 90 degrees, which is beneficial for smoothness and packaging. Being naturally aspirated meant no turbochargers to complicate the intake or introduce lag, offering immediate throttle response.
Power Output: A staggering 500 horsepower (373 kW) at 7,750 RPM. This was a monumental figure for a production sedan at the time, rivaling many dedicated sports cars. The high horsepower figure was a direct result of the engine's ability to rev incredibly high.
Torque: 391 lb-ft (520 Nm) at 6,100 RPM. While impressive, the torque delivery was designed to be progressive and spread across the rev range, complementing the high horsepower output.
Redline: An exhilarating 8,250 RPM. This is where the magic happened. The ability to rev this high allowed the engine to generate its massive power. The sound at these RPMs was truly something else.
Individual Throttle Bodies (ITBs): This is perhaps one of the most defining features. The S85 boasted ten individual throttle bodies, one for each cylinder. This system provided incredibly precise throttle control and instantaneous response, allowing each cylinder to receive exactly the amount of air it needed, when it needed it. This is a technology more commonly found in purebred race cars.
BMW's VANOS: Variable valve timing was employed on both the intake and exhaust camshafts. This system adjusted the timing of the valves based on engine speed and load, optimizing performance, fuel efficiency (relatively speaking!), and emissions across the entire operating range.
Lubrication System: A dry-sump lubrication system was utilized. This advanced system ensures consistent oil pressure and supply even under extreme G-forces, such as during hard cornering. It also allowed the engine to be mounted lower in the chassis, improving the car's center of gravity and handling.
Engine Management: The engine was controlled by two BMW MS S65 ECUs, working in tandem to manage ignition, fuel injection, VANOS, and the complex electronic throttle control system.
Construction: The engine block was made from an aluminum-silicon alloy, offering a good balance of strength and weight savings.

The combination of these features created an engine that was not only powerful but also incredibly responsive and sonically glorious. It wasn't just about numbers on a spec sheet; it was about the *feeling* of the engine coming alive, the way it pulled with relentless ferocity as the needle climbed towards the redline. Driving an E60 M5 was, and still is, an immersive experience, largely thanks to the S85.

The E60 M5: More Than Just an Engine

While the V10 engine was undoubtedly the star of the show, it’s crucial to remember that the E60 M5 was a complete package. BMW M didn't just plop a race engine into a regular 5 Series; they meticulously engineered the entire vehicle to complement and harness the power of the S85.

Performance and Driving Dynamics

The E60 M5 was a beast. It could sprint from 0 to 60 mph in under 4.5 seconds, a remarkable feat for a car of its size and weight (over 3,800 pounds). But the straight-line speed was only part of the story. The chassis, suspension, and steering were all tuned by M division to provide a level of handling that belied its executive sedan roots.

One of the most talked-about aspects of the E60 M5 was its transmission. Initially, it came exclusively with BMW's 7-speed Sequential Manual Gearbox (SMG). This automated manual transmission was a technological marvel for its time, offering lightning-fast shifts operated via steering wheel-mounted paddles or the gear lever. However, it was also known for its sometimes jerky low-speed behavior and a steep learning curve for drivers accustomed to traditional automatics or manual clutches. The SMG had multiple shift programs, allowing drivers to tailor the aggression of the gear changes. In later model years, a conventional 6-speed manual transmission became available as a no-cost option, much to the delight of purists who craved more direct control.

The suspension featured adaptive dampers (EDC - Electronic Damper Control) that allowed drivers to select from different stiffness settings, ranging from Comfort to Sport+. This adaptability meant the M5 could transform from a relatively compliant cruiser to a razor-sharp track weapon with the press of a button. The steering, while an evolution of BMW's hydraulic power steering, was precise and communicative, feeding back valuable information to the driver about what the front wheels were doing.

The Sound of the S85

Ah, the sound. For many, this is the defining characteristic of the S85. At idle, it had a deep, guttural burble, hinting at the immense power lurking within. As the revs climbed, it transformed into a high-pitched, banshee-like scream that was utterly intoxicating. The sound was a complex blend of mechanical precision and raw, unadulterated combustion. Unlike many modern performance cars that rely heavily on synthesized exhaust notes, the S85's soundtrack was pure, unadulterated V10 fury, amplified through its quad exhaust pipes. Driving the M5 with the windows down, especially as it approached its redline, was an experience that sensory overload couldn't even begin to describe.

It was a sound that commanded attention, a sound that announced the arrival of something truly special. It wasn't just noise; it was a musical performance, a testament to the engineering brilliance of BMW M. Even today, hearing an S85-powered M5 accelerate is enough to send shivers down the spine of any true car lover.

The Challenges and Nuances of S85 Ownership

Now, no masterpiece is without its complexities, and the S85 is no exception. While its performance and sound are legendary, owning an E60 M5 also comes with its unique set of challenges and considerations. It’s important to be aware of these to truly appreciate the car and its place in automotive history.

Reliability and Maintenance Concerns

The S85, with its high-revving nature and complex engineering, demanded meticulous care and maintenance. While BMW M is known for building robust engines, the S85’s complexity and high-strung nature could lead to certain issues if not properly maintained.

One of the most frequently discussed issues has been the rod bearings. Due to the high loads and stresses experienced by the engine, especially under spirited driving, the rod bearings could wear prematurely. This is not exclusive to the S85 but is a known concern for high-performance engines. Regular oil changes with the correct, high-quality oil are absolutely paramount. Many owners opt for proactive bearing replacement at a certain mileage interval as a preventative measure.

Another area that requires attention is the flywheel, particularly in SMG models. The dual-mass flywheel can experience wear over time, leading to vibrations or noise. Similarly, the clutch in SMG cars can also wear, requiring replacement.

The hydraulic pump for the SMG system is another component that can require maintenance or replacement. Its function is critical for the proper operation of the transmission.

The throttle actuators, which control the individual throttle bodies, are also a known point of concern. These can fail, leading to performance issues or warning lights. Fortunately, aftermarket solutions and robust repair procedures are available.

Given these potential issues, it's absolutely crucial for any prospective owner to perform thorough due diligence. A comprehensive pre-purchase inspection by a BMW specialist is highly recommended. Understanding the car's service history, including regular oil changes and any major work performed, is vital. While these cars can be incredibly rewarding to own and drive, they are not inexpensive to maintain. Parts and labor for an M car are generally more costly than for a standard BMW model.

The SMG Transmission: Love It or Hate It

As mentioned earlier, the SMG transmission was a defining characteristic of the early E60 M5s. For some drivers, it was a revelation – the speed and precision of shifts were unparalleled for its time. The ability to keep both hands on the wheel and shift via paddles was a genuine motorsport touch. However, for others, the SMG could be frustrating, particularly at low speeds or in stop-and-go traffic. The shifts could be abrupt, and the transmission could sometimes feel hesitant or unrefined compared to a modern dual-clutch or conventional automatic. The learning curve involved in mastering the SMG's different modes and understanding how to get the smoothest performance out of it was significant.

The availability of the 6-speed manual transmission later in the production run was a welcome addition for those who preferred a more traditional driving experience. This option significantly broadened the appeal of the E60 M5 to a wider range of enthusiasts. The manual transmission, of course, brought its own set of maintenance considerations, primarily related to the clutch and gearbox itself.

The E60 M5 in Context: A Unique Era

The E60 M5, with its V10 engine, represents a very specific, and perhaps fleeting, era in automotive history. It was a time when manufacturers were still willing to produce halo cars that prioritized extreme performance and engineering purity, even if they weren't the most commercially sensible decisions.

Why a V10 in a Sedan?

The question of "Why a V10 in a sedan?" is one that many ask. The answer lies in BMW M's philosophy. They weren't just building a faster 5 Series; they were building the ultimate expression of the 5 Series as a performance machine. A V10 engine provided the ultimate benchmark for power and rev-happiness. It was a statement of intent, a demonstration of BMW's engineering prowess, and a way to create an exclusive, aspirational vehicle that stood head and shoulders above the competition. The goal was to create a car that could, quite literally, keep up with supercars on the track while still offering the practicality and luxury of a sedan for everyday use (albeit an extreme version of everyday use).

Think about the competition at the time. While other manufacturers offered potent V8s and even some V12s in their flagship sedans, none dared to equip their performance sedan with a V10. This bold move by BMW M cemented the E60 M5's status as a true icon. It was a car that defied conventional wisdom and carved its own niche.

The Legacy of the S85

The S85 V10 engine is truly a legend in its own right. It’s the only V10 engine BMW has ever produced for a production car. This singularity makes it all the more special. While BMW has since moved towards turbocharged engines for its M division, the S85 remains a benchmark for naturally aspirated performance. Its ability to rev, its glorious sound, and the sheer mechanical artistry involved in its creation have cemented its place in automotive history.

The E60 M5, powered by this magnificent V10, is more than just a car; it’s a statement. It represents a time when automotive engineering prioritized exhilaration and performance above all else. It’s a reminder of what’s possible when a company dares to dream big and push the boundaries of what a production vehicle can be. Even today, enthusiasts seek out these cars, not just for their performance, but for the unique driving experience they offer—an experience that is largely defined by that incredible V10 heart.

Alternatives and Contemporaries

While the E60 M5 was the only BMW to sport a V10 in its production sedan line, it’s worth briefly considering its place in the broader automotive landscape of its time. What were the other performance sedans offering, and how did the M5 stand out?

Mercedes-Benz E63 AMG (W211): This car, a direct competitor to the M5, featured a 6.2-liter naturally aspirated V8 engine. It produced excellent power and torque, offering a different character – often described as more brute-force and muscular compared to the M5's high-revving precision.
Audi RS6 (C6): The C6 RS6 was a different beast altogether. It housed a twin-turbocharged 5.0-liter V10 engine, but its character was distinct from the naturally aspirated BMW V10. It offered immense torque and effortless acceleration, but it lacked the same high-revving drama and direct responsiveness of the S85.
Jaguar XJ Supercharged: While perhaps a slightly different segment, performance sedans from Jaguar often offered potent V8 engines, emphasizing luxury and smooth, powerful acceleration.

What truly set the E60 M5 apart was its unique V10 configuration, its sky-high redline, and the sheer dramatic flair of its power delivery. While its contemporaries offered incredible performance, the S85 engine provided an experience that was, and still is, inimitable. It was a car that dared to be different, and in doing so, it created a legend.

The Driving Experience: A Deep Dive

To truly understand which BMW had a V10, you have to understand what it was like to drive one. My own experiences, and those of fellow enthusiasts, paint a vivid picture.

Climbing into the driver's seat of an E60 M5 is an experience in itself. The cabin, while still luxurious and comfortable, has a purposeful, driver-focused feel. The M steering wheel, the bolstered seats, the M-specific gauges – they all serve as a constant reminder that this is no ordinary 5 Series. The starter button, nestled among the dash controls, feels like the key to unlocking a hidden beast.

Turning the key, or pressing the start button, is where the magic truly begins. The S85 engine awakens with a deep, resonant growl, a low rumble that vibrates through the chassis. It’s a sound that promises performance. At idle, it’s surprisingly composed, belying the complexity and power lurking beneath the hood. You can select different power modes (P400 and P500, which unlock the full 500 hp) and transmission shift modes (from Comfort to Sport+). These settings profoundly alter the car’s character.

Pulling away in the SMG can be a bit of a dance. If you’re gentle, it can be smooth. But the temptation to explore the engine’s capabilities is almost irresistible. As you begin to accelerate, the engine note starts to change. The initial growl transforms into a more insistent, mechanical thrum. And then, as the revs climb past 3,000 RPM, the S85 starts to reveal its true nature.

The individual throttle bodies open up, and the engine starts to sing. The sound becomes more acute, more purposeful, building in intensity with every passing hundred RPM. The V10’s exhaust note, a banshee wail mixed with a metallic rasp, becomes truly dominant. And the acceleration… it’s relentless. The S85 doesn't surge with the immediate, brutal torque of a turbocharged engine. Instead, it pulls with a linear, ever-increasing ferocity. It’s like a tidal wave of power that builds and builds, urging you to keep your foot planted. The sensation is exhilarating, a pure, unadulterated connection between your right foot and the engine's output.

The redline at 8,250 RPM is a destination you actively want to reach. The sound at these lofty heights is nothing short of glorious. It’s a mechanical crescendo that, for many, is the ultimate auditory reward. The SMG transmission, when in its sportier modes, delivers incredibly quick shifts that snap you forward, keeping you firmly in the powerband. The manual transmission offers a more tactile, engaging experience, allowing you to orchestrate the engine’s symphony yourself.

But the E60 M5 is not just about straight-line speed. The chassis is remarkably capable. Despite its size and weight, it feels planted and composed through corners. The steering, while perhaps not as talkative as some older hydraulic systems, is precise and provides good feedback. The adaptive dampers allow you to dial in the car's behavior. In Comfort mode, it’s surprisingly compliant, capable of long-distance cruising. Switch to Sport+ mode, and the dampers firm up dramatically, the steering weight increases, and the throttle response sharpens, transforming the car into a serious performance machine.

However, the SMG transmission’s low-speed behavior can be a point of contention. In traffic, it can be jerky, and finding a smooth engagement point requires practice. This is where the manual transmission shines, offering a more predictable and controlled experience in all driving conditions. The brakes, usually upgraded M-specific units, are powerful and confidence-inspiring, essential for reining in the V10’s considerable performance.

Ultimately, driving an E60 M5 is an event. It’s an experience that engages all your senses. It requires your full attention and rewards you with a level of performance and auditory drama that is rarely found in modern vehicles. It’s a car that makes you feel alive, connected to the road and the machine in a way that few other cars can.

Frequently Asked Questions About the BMW V10

How many BMWs had a V10 engine?

In terms of BMW's production passenger vehicles, only one model was ever equipped with a V10 engine: the fifth generation BMW M5 (E60 chassis), produced from 2005 to 2010. Additionally, its closely related sibling, the BMW M6 (E63/E64 chassis), also shared this extraordinary V10 powertrain during the same production period. These were the only two production BMW models to ever feature a V10 engine. BMW's motorsport endeavors, particularly in Formula 1, utilized V10 engines, but the S85 and its variants were unique to these specific production M cars.

The engine itself, codenamed S85B50, was a bespoke V10 designed specifically for these high-performance vehicles. It was not an engine that appeared in any other BMW model, nor was it a derivative of a V8 or V12 engine. This exclusivity adds to the mystique and desirability of the M5 and M6 models equipped with this powerplant. The decision to equip a luxury sport sedan and a grand tourer coupe/convertible with such an exotic engine was a bold statement by BMW M, highlighting their commitment to ultimate performance and engineering innovation, even in a market segment that was increasingly moving towards turbocharged V8s or V6s for efficiency.

Why did BMW put a V10 in the M5?

The decision to put a V10 engine in the BMW M5 was a strategic and ambitious move driven by several key factors, primarily centered around achieving ultimate performance and establishing a halo vehicle for the brand. BMW M, the high-performance division, aimed to create a sedan that pushed the boundaries of what was considered possible for a four-door production car. The V10 engine, inspired by BMW's Formula 1 racing technology of the era, offered a unique combination of attributes that were highly desirable for this objective:

Firstly, the V10 configuration allowed for a naturally aspirated engine with a displacement of 5.0 liters to achieve an exceptionally high power output. At the time, BMW was seeking to create an engine that could produce around 100 horsepower per liter, a benchmark for naturally aspirated performance. The V10's ability to rev to very high RPMs (over 8,000 RPM) was crucial for achieving this, delivering a peak of 500 horsepower. This high-revving characteristic was a hallmark of motorsport-derived engines and provided a thrilling driving experience that a lower-revving V8 might not have matched.

Secondly, the natural aspiration of the V10 meant immediate throttle response and a linear power delivery, without the potential for turbo lag. This provided a more direct and connected driving experience, allowing the driver to precisely modulate the engine's power output. This level of driver engagement was a core philosophy for BMW M. The use of individual throttle bodies for each cylinder further enhanced this responsiveness, making the engine feel incredibly eager and immediate to driver inputs.

Thirdly, the V10 was a statement. By equipping their flagship performance sedan with an engine of such exotic configuration and performance potential, BMW M positioned the E60 M5 as a benchmark against which other performance sedans would be measured. It was a technological tour de force, showcasing BMW's engineering capabilities and commitment to creating the ultimate driver's car, regardless of its practical applications. This allowed the M5 to stand out dramatically from its competitors, many of which utilized turbocharged V8s or naturally aspirated V8s. The unique sound profile of a V10 also contributed significantly to its desirability and iconic status.

What are the main maintenance concerns for a V10 BMW M5?

Owning a V10 BMW M5 (E60) or M6 (E63/E64) can be an incredibly rewarding experience, but it’s essential to be aware of the specific maintenance concerns associated with the S85 V10 engine. Due to its high-performance nature and complex engineering, these vehicles require diligent care and can incur significant maintenance costs. The most commonly discussed and critical areas of concern include:

Rod Bearings: This is arguably the most significant potential issue. The S85 engine operates under high stress, and over time, the rod bearings can wear prematurely. This wear is often exacerbated by infrequent oil changes, using the wrong type of oil, or aggressive driving without allowing the engine to reach optimal operating temperature. If rod bearings fail, it can lead to catastrophic engine damage, requiring a complete engine rebuild or replacement, which is extremely expensive. Proactive replacement of rod bearings at a specified mileage interval (e.g., around 50,000-70,000 miles) is a highly recommended preventative measure for owners looking to ensure long-term engine health.

Oil Consumption and Oil Changes: The S85 can consume oil between changes, and it's crucial to monitor the oil level regularly and top it up as needed. Using a high-quality synthetic oil that meets BMW's specifications is paramount. More importantly, frequent oil changes (typically every 5,000 miles or once a year, whichever comes first) are vital for engine longevity, especially concerning the rod bearings.

SMG Transmission Issues: Early E60 M5s primarily came with a 7-speed SMG (Sequential Manual Gearbox). The SMG hydraulic pump and its associated components can be a source of potential issues, requiring maintenance or replacement. The clutch and flywheel also have a finite lifespan and will eventually need replacement, which can be costly due to the complexity of the system.

Throttle Actuators: The engine utilizes individual throttle bodies for each cylinder, controlled by electronic actuators. These actuators can fail, leading to performance issues, limp mode activation, and dashboard warning lights. Replacement can be pricey, though robust aftermarket repair solutions are often available.

VANOS System: While generally robust, the Variable Valve Timing (VANOS) system can develop issues over time, potentially affecting engine performance and fuel economy. Regular maintenance and proper diagnosis are key.

Cooling System: As with any high-performance engine, the cooling system must be in top condition to prevent overheating. Regular inspection and maintenance of hoses, radiators, and the water pump are important.

Given these potential concerns, it is highly advisable for any prospective buyer to have a thorough pre-purchase inspection performed by a qualified BMW specialist. A well-maintained V10 M5 or M6 can be a reliable and incredibly rewarding car, but it demands attention to detail and a significant budget for maintenance and potential repairs. Understanding these issues upfront is crucial for responsible ownership.

Is the V10 engine reliable?

The reliability of the V10 engine (S85) in the BMW M5 and M6 is a topic that elicits strong opinions. When properly maintained, it can be a robust and exceptionally rewarding engine. However, its high-performance, high-revving nature and inherent complexity mean that it demands more attention and specialized care than a typical engine. The primary reliability concern, as previously mentioned, revolves around the rod bearings. While not every engine will experience premature wear, it's a known weak point that has led to significant issues for some owners. This is often linked to oil quality, change intervals, and how the car is driven.

Beyond the rod bearings, the S85 engine is a complex piece of engineering. The individual throttle bodies, VANOS system, and the sophisticated engine management systems are all potential areas where issues can arise. The SMG transmission, if equipped, also adds another layer of complexity and potential for mechanical problems. However, it’s important to note that many owners meticulously maintain their V10 M5s and M6s, and these cars can provide years of thrilling performance without major incident. The key is:

Proactive Maintenance: Following a strict maintenance schedule, especially regarding oil changes with high-quality oil.
Preventative Repairs: Considering proactive replacement of known wear items like rod bearings.
Driving Style: Allowing the engine to warm up fully before high-revving and avoiding prolonged periods of extreme stress without proper cooling.
Specialized Mechanics: Ensuring that any work is performed by technicians who are experienced with BMW M cars and the S85 engine.

So, is it reliable? In the same way that a dedicated race car is "reliable" – it requires expert care and understanding of its limits. It’s not a "set it and forget it" engine. If you are willing to invest in its upkeep and understand its needs, then yes, it can be surprisingly reliable and immensely satisfying. If you're looking for a low-maintenance, worry-free daily driver, a V10 M5 might not be the best fit.

How much horsepower did the BMW V10 have?

The BMW V10 engine, specifically the S85B50 unit found in the E60 M5 and E63/E64 M6, produced a formidable 500 horsepower (373 kW). This figure was achieved at a high engine speed of 7,750 RPM. This metric was a significant achievement for a naturally aspirated engine in a production sedan at the time, rivaling and often exceeding the output of many contemporary V8 and even some V12 engines. The engine also produced 391 lb-ft (520 Nm) of torque at 6,100 RPM. The power delivery was designed to be linear and exhilarating, with the engine revving freely to its 8,250 RPM redline, further contributing to its thrilling performance characteristics and its iconic V10 sound.

Which models featured the V10 engine?

The V10 engine, the S85B50, was exclusively used in two BMW M models during their production run:

BMW M5 (E60 generation): Produced from 2005 to 2010. This was the sedan variant that brought the V10 symphony to a four-door executive car.
BMW M6 (E63 coupe and E64 convertible): Produced from 2005 to 2010. The M6 shared the same potent V10 engine, offering its exotic power in a more performance-oriented coupe and convertible body style.

These were the only BMW production cars to ever feature a V10 engine. This exclusivity makes them highly sought after by enthusiasts who appreciate the unique engineering and performance that this powerplant offered.

What is the difference between the S85 V10 and other V10 engines?

The S85 V10 engine is distinct from other V10 engines primarily due to its specific design philosophy, engineering for a production car application, and its unique attributes. While all V10s share the basic configuration of ten cylinders arranged in a V shape, the S85 stands out in several key ways:

Naturally Aspirated vs. Turbocharged: Many modern V10s, particularly in racing contexts (like Formula 1 cars before the engine formula change), were often naturally aspirated, emphasizing high revs and responsiveness. However, some V10s, like the one in the Audi RS6 (C6 generation), were twin-turbocharged. The S85 is naturally aspirated, prioritizing immediate throttle response and a linear power curve.
High Redline and Power Delivery: The S85 was designed to rev extremely high, up to 8,250 RPM, to achieve its 500 horsepower output. This high-revving characteristic is a major differentiator and contributes significantly to its sound and driving feel. Other V10s might have different power and torque curves, with some focusing on low-end torque.
Individual Throttle Bodies (ITBs): A hallmark of the S85 is its ten individual throttle bodies, one for each cylinder. This setup provides incredibly precise control over airflow to each cylinder, leading to exceptional throttle response and a refined intake note. This level of individual control is typically found in high-end race engines and was a significant engineering feat for a production car.
Formula 1 Influence (but not a direct transplant): While inspired by BMW's Formula 1 engines, the S85 was not a direct adaptation. It was a unique design tailored for the demands of a road car, balancing performance with drivability and the need for longevity and emissions compliance (to a degree). Formula 1 engines are built for extremely short lifespans and absolute peak performance under specific racing conditions.
BMW M Engineering: The S85 was developed by BMW M division, meaning it was engineered with a focus on driver engagement, track capability, and the specific performance characteristics that define M cars. This includes specific tuning, materials, and overall driving dynamics that are distinct from engines developed by other manufacturers.
Sound Profile: The combination of V10 configuration, natural aspiration, and the S85's specific exhaust and intake tuning creates a unique and highly sought-after sound profile that is instantly recognizable.

In essence, while other manufacturers have produced V10 engines, the BMW S85 is unique in its specific blend of naturally aspirated high-revving performance, individual throttle body control, and its application within a luxury performance sedan and coupe/convertible. It represents a particular moment in automotive history where engineering extravagance for road cars reached a zenith.

What is the cost of maintenance for a V10 M5?

The cost of maintaining a V10 BMW M5 (E60) or M6 (E63/E64) can be substantial, and it's a critical factor for anyone considering ownership. This is not a car for the faint of wallet when it comes to upkeep. Several factors contribute to the higher maintenance costs:

Specialized Parts: Many components specific to the M models, especially those related to the S85 V10 engine, the M differential, M brakes, and the SMG transmission (if applicable), are more expensive than standard BMW parts.
Labor Costs: Working on these high-performance vehicles often requires specialized knowledge and tools. This means that labor rates at BMW dealerships or reputable independent M specialists can be higher than for standard BMW service centers.
Frequency of Maintenance: The nature of the S85 engine, particularly the rod bearing concerns, often necessitates more frequent and specialized maintenance. For example, frequent oil changes with high-quality synthetic oil (every 5,000 miles or annually) are strongly recommended.
Potential for Major Repairs: As discussed, issues like rod bearing failure, SMG pump failure, or throttle actuator problems can result in repair bills that can easily run into the thousands, or even tens of thousands, of dollars if an engine rebuild is required.
Tires and Brakes: High-performance tires and M-specific brake components also come at a premium.

To give a general idea, a routine oil change and inspection might cost anywhere from $300 to $700, depending on the shop and location. However, more significant services, such as spark plug replacements (which can be labor-intensive on a V10), brake fluid flushes, or addressing minor known issues, can easily add up to $1,000 to $3,000. Major repairs, like replacing clutch packs on the SMG, addressing throttle actuator issues, or addressing cooling system components, could range from $2,000 to $5,000 or more. And, as mentioned, a catastrophic engine failure requiring a rebuild or replacement could cost upwards of $15,000 to $30,000 or even more.

Therefore, it is absolutely essential for potential owners to budget for maintenance and repairs. Many owners recommend setting aside an annual budget of at least $2,000-$5,000 for routine maintenance and potential unexpected repairs. Having a thorough pre-purchase inspection and understanding the car's service history are also critical steps in mitigating some of these potential costs. A good warranty or service contract can also provide peace of mind, but these also come at a cost.

Concluding Thoughts: A Legend Etched in V10 History

The question "Which BMW had a V10?" ultimately leads us to a car that wasn't just a vehicle, but a statement. The E60 M5, powered by the legendary S85 V10, represents a pinnacle of automotive engineering that is unlikely to be replicated. It was a time when BMW M dared to be different, to prioritize the pure thrill of driving and the pursuit of ultimate performance over convention. The S85 engine, with its motorsport DNA, its stratospheric redline, its individual throttle bodies, and its unforgettable sound, is a masterpiece that etched its name into the annals of automotive history.

While owning such a car comes with its own set of considerations and potential costs, the experience it offers is, for many, unparalleled. It’s a visceral, emotional connection to a machine that was built with passion and a relentless pursuit of excellence. The V10 M5 is more than just metal and mechanics; it’s an experience, a legend, and a testament to the golden age of naturally aspirated performance engines. For those who understand its intricacies and appreciate its unique character, it remains an automotive icon that will forever be celebrated.