Performance and Durability
Known for its grunt and efficiency, but early versions had 'noisy' injector issues which prompted a large-scale replacement program by Mercedes.
- Sturdy block and reciprocating parts.
- Early Piezo injector recalls.
- Excellent fuel economy for its size.
Common Weak Points
Timing chain rattle on cold starts is the most cited issue, often caused by a failing tensioner or stretched chain over long service intervals.
- Timing chain tensioner (listen for startup rattle).
- Plastic coolant manifold (tends to crack and leak).
- Oil pump solenoid issues on older units.