Mercedes-Benz E-Class W124/S124/C124/A124 300d (Sedan / Wagon)
Model overview
A model overview is not available for this generation yet.
Engine overview · 3.0L 6-cyl DIESEL
A durable older six-cylinder diesel family, but condition varies widely after decades of use. Non-turbo and turbocharged versions need different checks, especially around cooling, cold starting and fuel-system wear.
Pros
- Durable six-cylinder diesel design
- Straightforward mechanical fuel system
Cons
- Age-related leaks and deterioration
- Turbo versions need additional heat and boost checks
- Cold-start condition is important
Common problems & ownership concerns
Potential impact: Low · Medium · High. This describes possible consequences, not fault likelihood.
- Age-related diesel fuel leaksMedium
- Glow-system and cold-start faultsMedium
- Cooling-system and cylinder-head concerns on turbo applicationsHigh
- Vacuum and boost-control deterioration on turbo applicationsMedium
Maintenance
Follow the exact vehicle's Mercedes-Benz service schedule and specification, with particular attention to fuel filtration, cooling, glow-system servicing and turbo-related maintenance where fitted.
These are general ownership concerns, not a diagnosis. Equipment and engine details vary by version and production date.
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