M50
BMW · M50 2.0/2.5 NA I6
1990–1996
"Cast iron block legend. One of BMW's most reliable ever. M50TU added single VANOS. Strong internals handle 300k+ km. Cooling plastics only weakness."
Mileage Risk Timeline
When problems typically appear — enter your mileage to see your risk zone
Known Issues 2
Water pump plastic impeller failure
▸Sudden overheating, no flow
Plastic impeller breaks internally. Replace with metal impeller pump at 80k km.
Αντλία νερού πλαστικό φτερωτό. ΑΝΤΙΚΑΤΑΣΤΑΣΗ στα 80k. €200-500.
VANOS unit wear (M50TU)
▸Rattle at idle, low torque loss
M50TU single VANOS seals wear. Rebuild kits €50-100.
VANOS rebuild €200-600. Χάνεις ροπή αν δεν φτιαχτεί.
Related Guides
Other BMW Engines
Tuning Potential
Turbo builds 400hp+ on stock internals
Frequently Asked Questions
Is the BMW M50 reliable?
The BMW M50 scores 88/100 with a verdict of BEST. It has 2 documented issues with total repair costs between €400 and €1,100.
What are the common problems with the M50?
The most common issues are:
- Water pump plastic impeller failure — high, repair cost €200–€500, 60,000 km–120,000 km
- VANOS unit wear (M50TU) — moderate, repair cost €200–€600, 100,000 km–200,000 km
How much does it cost to repair the M50?
Total potential repair costs for all 2 known issues range from €400 to €1,100. The most expensive issue is typically .
What years was the M50 produced?
The BMW M50 was produced from 1990 to 1996. It is a 2494cc I6 petrol na engine.
Scores are calculated from documented issues, repair costs, and failure patterns across thousands of owner reports and technical sources. Learn about our methodology. Always inspect before you buy.