2008 BMW M5: A High-Performance Saloon Masterpiece
The 2008 BMW M5 represented the pinnacle of performance engineering in the executive saloon segment, blending everyday practicality with supercar-rivaling exhilaration. Based on the E60 5 Series chassis, this generation of the M5 was a significant departure from its predecessors, most notably for its groundbreaking powertrain.
Highlights
- The Heart of the Beast: Naturally Aspirated V10 Engine: The undisputed star of the 2008 M5 is its 5.0-liter S85 V10 engine. Derived from BMW's Formula 1 experience, this high-revving behemoth produced an astonishing 500 horsepower and 383 lb-ft of torque. Its ability to scream to an 8,000 rpm redline, coupled with a soundtrack that was pure motorsport, made driving the M5 an unforgettable sensory experience.
- SMG III Sequential Manual Gearbox: While a manual transmission was not offered in the US for this model year, the M5 came standard with the SMG III (Sequential Manual Gearbox). This seven-speed automated manual transmission allowed for lightning-fast gear changes via paddle shifters on the steering wheel or the gear lever. Drivers could select from multiple shift programs, tailoring the aggression and speed of gear changes to their driving style and conditions.
- Advanced Electronic Damping Control (EDC): The M5 featured an advanced suspension system with Electronic Damping Control (EDC). This system allowed drivers to select from various suspension firmness settings (Comfort, Normal, Sport) via the iDrive system, significantly altering the car's ride quality and handling characteristics from a comfortable cruiser to a track-focused machine.
- Active M Differential: To maximize traction and optimize power delivery, the M5 was equipped with an Active M Differential. This electronically controlled limited-slip differential could vary the locking action between the rear wheels from 0-100%, intelligently distributing torque to the wheel with the most grip, enhancing both acceleration and cornering stability.
- M Servotronic Power Steering: The power steering system was speed-sensitive and offered adjustable effort levels, providing a precise and communicative feel at lower speeds and becoming firmer and more direct as speeds increased, crucial for confident high-speed driving.
- Comprehensive Safety Suite: The 2008 M5 was equipped with a robust suite of safety features, including:
- Front and side airbags: Providing crucial occupant protection in frontal and side impacts.
- Head-protection airbags (curtain airbags): Extending the protective area for front and rear occupants.
- Dynamic Stability Control (DSC) with M Dynamic Mode (MDM): DSC is BMW's advanced electronic stability control system, designed to prevent skids. The MDM setting allowed for a greater degree of wheel slip before intervening, offering a more forgiving and engaging driving experience for experienced drivers.
- Anti-lock Braking System (ABS): Preventing wheel lock-up during hard braking, allowing drivers to maintain steering control.
- Tire Pressure Monitoring System (TPMS): Alerting the driver to significant drops in tire pressure, a critical safety aspect for high-performance tires.
- Trim and Interior: The 2008 M5 was offered in a single, highly-equipped trim level, reflecting its flagship status. The interior was a luxurious and driver-focused environment, featuring:
- M Sport Seats: Supportive and bolstered seats designed to hold occupants securely during spirited driving.
- M Steering Wheel: Featuring paddle shifters and a comfortable grip for optimal control.
- Leather Upholstery: High-quality leather was standard, enhancing the premium feel.
- iDrive Infotainment System: While advanced for its time, the iDrive system controlled various vehicle functions, including navigation, climate control, and M-specific settings.
- Head-Up Display (HUD): Projecting key driving information (speed, navigation prompts, M-mode) onto the windshield, allowing the driver to keep their eyes on the road.
What to Expect
Owning a 2008 BMW M5 is an experience that can be both incredibly rewarding and demanding.
- The Driving Experience: Expect a visceral and engaging drive. The V10 engine's intoxicating power delivery and unique sound are the primary draws. The SMG III gearbox, while quick, has a learning curve and can be jerky at low speeds, especially when cold. The suspension can be firm, even in its Comfort setting, so daily driving on rough roads might be a compromise. The M5 excels on open roads and track environments where its performance potential can be fully appreciated.
- Maintenance: This is where the "M" in M5 truly signifies "Maintenance." The S85 V10 engine is a complex piece of engineering, and as such, it requires meticulous and timely maintenance. Expect higher costs for routine services like oil changes (often requiring specific, expensive oil), spark plugs, and brake fluid flushes. More significant repairs, such as clutch replacements (due to SMG wear), fuel pump issues, or electronic component failures, can be very expensive. Finding a BMW specialist familiar with M cars is highly recommended.
- Insurance: Due to its high performance, the V10 engine, and the associated repair costs, insurance premiums for a 2008 BMW M5 can be substantial, especially for younger or less experienced drivers. It's wise to get insurance quotes before purchasing.
Potential Considerations
While the 2008 M5 is a phenomenal machine, potential buyers should be aware of a few aspects:
- SMG III Behavior: As mentioned, the SMG III gearbox can be unrefined at low speeds, exhibiting a distinct lurch or delay. Some owners find it to be an acquired taste, while others adapt to its unique characteristics.
- Fuel Economy: The powerful V10 engine is not fuel-efficient. Expect significantly lower MPG figures than a standard 5 Series, especially when driving enthusiastically.
- Complexity and Reliability: The V10 engine, the SMG gearbox, and the array of electronic systems contribute to the M5's complexity. While generally well-built, individual components can fail, leading to costly repairs. Regular preventative maintenance is key to mitigating potential issues.
- Ride Comfort: Even in its most comfortable setting, the M5's ride can be quite firm, making it less ideal for those prioritizing plushness on daily commutes over rough terrain.
- Limited Manual Transmission Availability: For US buyers, the SMG III was the only transmission option. Enthusiasts seeking a true manual gearbox would need to look at European or other markets.
Overall Summary
The 2008 BMW M5 is a legendary sports saloon that offered a truly unique and exhilarating driving experience. Its naturally aspirated V10 engine remains one of the most potent and sonically impressive engines ever put into a production car. While its advanced technology and performance come with higher maintenance costs and a less refined low-speed driving experience compared to some competitors, for those who appreciate raw power, motorsport pedigree, and an engaging connection to the road, the E60 M5 is an automotive icon that continues to captivate enthusiasts. It's a car that demands respect and rewards its owner with unparalleled performance and a driving thrill that few other sedans can match.
