S85 V10 Rod Bearing Failure
high- Typically appears
- 40–100k mi
- Estimated repair
- $4,000 – $12,000
2007 BMW
M5Sedan
5.0L V10 (S85) · Sedan
The 2007 BMW M5 is the E60-generation M5 sedan — widely considered one of the most ambitious performance sedans ever built. At its heart is the S85, a 5.0-liter V10 engine derived from BMW's Formula 1 program, spinning to a 8,250 RPM redline and producing 500 horsepower. It's paired exclusively with the 7-speed SMG III semi-automatic gearbox, making it unlike anything else on the road at the time. This is a driver's car first and a daily driver second. The throttle, steering, and chassis communication are exceptional, but the complexity of the S85/SMG combination means ownership demands genuine commitment — both mechanically and financially. Parts are expensive, labor is specialized, and some failure modes are severe if ignored. A well-maintained 2007 M5 is a thrilling, appreciating performance icon. A neglected one is a very expensive project. Know what you're buying before you buy it.
Reliability
2/5
Verified data
Engine
5.0L V10 (S85)
Drivetrain
RWD
Fuel
Gasoline
MPG
11 city / 18 hwy / 14 combined
Seats
5
Doors
4
Body
Sedan
MSRP
$82,900
Overview
AI-curatedThe 2007 BMW M5 is the E60-generation M5 sedan — widely considered one of the most ambitious performance sedans ever built. At its heart is the S85, a 5.0-liter V10 engine derived from BMW's Formula 1 program, spinning to a 8,250 RPM redline and producing 500 horsepower. It's paired exclusively with the 7-speed SMG III semi-automatic gearbox, making it unlike anything else on the road at the time. This is a driver's car first and a daily driver second. The throttle, steering, and chassis communication are exceptional, but the complexity of the S85/SMG combination means ownership demands genuine commitment — both mechanically and financially. Parts are expensive, labor is specialized, and some failure modes are severe if ignored. A well-maintained 2007 M5 is a thrilling, appreciating performance icon. A neglected one is a very expensive project. Know what you're buying before you buy it.
Known for
- 5.0L S85 V10 engine with a shrieking 8,250 RPM redline
- SMG III 7-speed semi-automatic gearbox
- Razor-sharp chassis dynamics and near-perfect weight distribution
- Luxury four-door practicality with supercar performance
Best for
- Enthusiasts who want a high-revving analog driving experience
- Owners who can afford dedicated maintenance and specialist labor
- Drivers who understand and accept the SMG gearbox's character
- Someone who wants a practical sports sedan that is also a collector vehicle
Watch for
- Rod bearing failure on the S85 — the single biggest mechanical risk
- SMG pump and accumulator failures leaving the car immovable
- Throttle actuator failures (10 individual units on the V10)
- High oil consumption masking early bearing wear
- Extremely high repair costs — nearly everything requires specialty tooling or BMW-trained labor
Common issues by mileage
6 knownSMG Hydraulic Pump / Accumulator Failure
high- Typically appears
- 60–120k mi
- Estimated repair
- $1,500 – $4,500
Throttle Actuator Failure (DISA / Individual Throttle Bodies)
medium- Typically appears
- 60–100k mi
- Estimated repair
- $800 – $3,000
VANOS Camshaft Timing Solenoid Issues
medium- Typically appears
- 50–90k mi
- Estimated repair
- $400 – $1,800
Oxygen Sensor / Heated O2 Sensor Failure
medium- Typically appears
- 70–120k mi
- Estimated repair
- $300 – $900
SMG / CAN Bus Communication Faults
medium- Typically appears
- 60–130k mi
- Estimated repair
- $300 – $2,500
Maintenance schedule
- 1 Every 5,000–7,500 miles — do NOT stretch to BMW's OBC interval Engine oil change with BMW 10W-60 full synthetic
The S85's rod bearings are extremely sensitive to oil degradation. Using the correct 10W-60 viscosity and keeping intervals short is the single most effective thing you can do to prevent catastrophic bearing failure. The OBC service reminder interval is too long for hard-driven examples.
- 2 Once at 40–50k miles regardless of symptoms, then every 30–40k miles Rod bearing inspection and replacement (preventive)
Rod bearing failure is the M5's Achilles heel. Proactive replacement — before any knock or pressure loss — typically costs $1,500–$3,500 and avoids a $6,000–$12,000 engine rebuild or replacement.
- 3 Every 30,000 miles SMG transmission fluid change
The SMG III hydraulic system degrades with heat and age. Fresh fluid keeps pump wear down and prevents erratic shift behavior or full hydraulic failure.
- 4 Every 40,000 miles or at first sign of temp fluctuation Coolant system inspection (thermostat, expansion tank, hoses)
E60-era BMW plastic coolant components are age-prone. A failed expansion tank or thermostat on the V10 can lead to overheating that compounds bearing and head issues.
- 5 Every 30,000 miles Throttle body cleaning and inspection
The S85 has 10 individual throttle bodies. Carbon buildup on any of them can cause idle stumble, throttle response issues, or fault codes. Cleaning is far cheaper than actuator replacement.
- 6 Every 2 years regardless of mileage Brake fluid flush
The M5's high-performance braking system runs hot under spirited use. Moisture-laden brake fluid lowers boiling point and degrades ABS/DSC hydraulic components over time.
- 7 Every fall before winter season Battery load test and condition check
The E60 M5 has a large electrical load from SMG electronics, iDrive, and multiple control modules. A weak battery causes a cascade of fault codes and can prevent the SMG from engaging. Wisconsin winters accelerate battery failure.
- 8 Every 50,000 miles Differential and rear subframe bushing inspection
With 500 hp going through a RWD chassis, rear diff mounts and subframe bushings wear faster than on a standard 5-series. Clunking on acceleration is the first sign — address it before it damages the subframe itself.
Always defer to the manufacturer's service manual for warranty-mandated intervals.
Cost of ownership
Annual maintenance
$2,500 – $7,000
Fuel
Premium 91+ octane required. Expect $3,500–$5,500/year at average Wisconsin fuel prices driving 12,000 miles annually.
Insurance
Expect $2,000–$3,500/year for a typical adult driver with a clean record. High-performance classification and repair costs push premiums up significantly.
The 2007 M5 is genuinely one of the most expensive mainstream performance sedans to maintain. Routine service (oil, filters, fluids) runs high due to specialty parts and the need for BMW-trained technicians. The preventive rod bearing replacement alone — which every responsible owner should budget for — adds a one-time $1,500–$3,500 cost. Budget $2,500/year minimum if the car is babied and everything is healthy. A year with one major repair (SMG pump, throttle actuator, O2 sensors) can easily exceed $5,000–$7,000 in independent shop labor and parts. Do not buy this car on a tight budget.
Seasonal care
Lake Geneva, WI Winter
- Do NOT daily-drive this car on salted Wisconsin roads without serious underbody protection — the E60 chassis corrodes quickly and the car is increasingly collectible. Consider storing it from November through April.
- If driving in winter, allow 5–10 minutes of warm idle before moving and another mile of gentle driving before loading the engine — cold starts are particularly hard on S85 rod bearings.
- Use a battery maintainer (trickle charger) during storage. The SMG system and multiple ECUs drain a parked battery within weeks, and a dead battery in a Wisconsin winter can cause SMG engagement failures and a cascade of fault codes.
- Switch to a dedicated winter tire set on steel or inexpensive wheels. The M5's summer performance tires become dangerously hard below 40°F and offer almost no grip on snow or ice.
- Use quality winter-grade washer fluid rated to at least -30°F. The V10's wide engine bay means there's a lot of underhood heat, but the washer reservoir is not heated.
- Inspect brake lines and fuel lines for salt corrosion each spring if the car has been driven through winter.
Summer
- Check tire pressure monthly — Wisconsin summer heat causes pressure to rise roughly 1 PSI per 10°F increase. Over-inflation on the M5's wide performance tires reduces contact patch and can cause uneven wear.
- Inspect the A/C system (cabin comfort and engine bay cooling) before peak heat. The V10 generates substantial heat and the cooling system must be in top condition to avoid temperature spikes in slow summer traffic.
- Monitor engine oil level weekly in summer — the S85 can consume up to 1 quart per 1,000 miles under spirited driving, and low oil accelerates bearing wear dramatically.
- After any extended high-RPM driving (track day, highway pull), allow a 5-minute cool-down idle before shutting off to prevent heat soak damaging the turbo oil (not applicable here, but SMG hydraulics benefit from the same practice).
Comparable vehicles
2007 Mercedes-Benz
E63 AMG
Same premium sport sedan mission, similar price point, 507 hp V8 AMG engine. More tractable daily driver, less exotic, but repair costs are similarly high.
No catalog match
2007 Audi
RS4
420 hp 4.2L V8, similar price range, available with AWD for better Wisconsin winter usability. Less outright power but stronger real-world reliability reputation.
2007 Cadillac
CTS-V
Supercharged LS-based V8 in a sport sedan body. Significantly cheaper to maintain, plentiful parts, similar performance envelope — a more practical choice for high-mileage ownership.
2007 Porsche
Panamera
Not yet available in 2007, but the closest Porsche analogue in spirit. For buyers cross-shopping, the 997-era Porsche 911 S represents similar driver engagement with a stronger long-term reliability track record.
No catalog match