Mercedes-Benz M-Class W164
Model overview
A spacious, comfortable luxury SUV. Ageing suspension, electrical equipment and four-wheel-drive components can make upkeep expensive.
Pros
- Comfortable spacious cabin
- Useful 4MATIC traction
- Good towing capability in suitable specifications
Cons
- High running costs
- Costly driveline repairs
- AIRMATIC adds cost where fitted
Common problems & ownership concerns
Potential impact: Low · Medium · High. This describes possible consequences, not fault likelihood.
- Transfer-case wearMedium
- AIRMATIC faults where fittedMedium
- Electrical equipment faultsMedium
- Suspension wear and corrosionMedium
Maintenance
Maintain the gearbox, transfer case, differentials and fitted suspension under their specified schedules.
Engine overview · 6.2L 8-cyl PETROL
The W164 application uses a naturally aspirated 6.2L petrol V8 with strong performance and character. Running costs are high, and condition and specialist maintenance history matter more than the catalogue label alone.
Pros
- Strong naturally aspirated V8 performance.
- Distinctive AMG character and sound.
Cons
- High fuel and maintenance costs.
- Age and heat can expose expensive engine issues.
- Not every listed concern affects every production year or engine.
Common problems & ownership concerns
Potential impact: Low · Medium · High. This describes possible consequences, not fault likelihood.
- Early-production M156 cylinder-head bolt corrosion on some enginesHigh
- Camshaft and cam-adjuster wear on some M156 enginesHigh
- Oil leaks from M156 engine seals and coversMedium
Maintenance
Follow the VIN-specific service schedule and correct oil specification; keep documented servicing and investigate leaks, cooling issues or timing-related noises promptly.
These are general ownership concerns, not a diagnosis. Equipment and engine details vary by version and production date.
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