OM606
Mercedes-Benz · 3.0L NA Diesel I6
1993–2001
"Legendary. 500k+ miles documented. Tunable to 500hp. One of most reliable engines ever."
Mileage Risk Timeline
When problems typically appear — enter your mileage to see your risk zone
Known Issues 2
Glow plug failure (only meaningful issue)
▸Hard cold start, white smoke on cold start
THE only real concern on this legendary engine. Replace as set at 100k km intervals. Nothing else matters.
Virtually the only repair needed on this engine in Greece. €80-200. Mechanics love this engine for its simplicity.
Injection pump seal wear (age-related)
▸Minor fuel weep, diesel smell
On very high mileage examples (200k+ km). Seals harden with age. Pump itself nearly indestructible.
Only a concern on very high mileage Greek examples. Seals cheap, pump rebuild available everywhere.
Models with OM606 2
Other Mercedes-Benz Engines
Tuning Potential
500hp with turbo conversion
Frequently Asked Questions
Is the Mercedes-Benz OM606 reliable?
The Mercedes-Benz OM606 scores 96/100 with a verdict of BEST. It has 2 documented issues with total repair costs between €280 and €700.
What are the common problems with the OM606?
The most common issues are:
- Glow plug failure (only meaningful issue) — minor, repair cost €80–€200, 80,000 km–∞
- Injection pump seal wear (age-related) — minor, repair cost €200–€500, 200,000 km–∞
How much does it cost to repair the OM606?
Total potential repair costs for all 2 known issues range from €280 to €700. The most expensive issue is typically .
What years was the OM606 produced?
The Mercedes-Benz OM606 was produced from 1993 to 2001. It is a 2996cc I6 diesel engine.
Verdict and scores are editorial opinions based on aggregated data. Learn about our methodology. Not a substitute for professional inspection.