Higher reliability score
M50/M52 BEST 95/100
+2 points over B58
0 / 100
BEST B58 BMW
0 / 100
BEST M50/M52 BMW

Specifications

B58
M50/M52
Brand
BMW
BMW
Verdict
BEST
BEST
Reliability
93
95
Years
2015--present
1990--2000
Displacement
2998 cc
2494 cc
Layout
I6
I6
Type
Petrol Turbo
Petrol Na
Power
326--387 hp
150--170 hp
Known Issues
3
3
Total Risk Cost
€430--€1,000
€330--€850

Character

B58

"Possibly BMWs best engine ever. Forged internals, insane tuning (600hp+). 300k+ km."

M50/M52

"Smooth, linear, bulletproof. Classic BMW feel. Simple maintenance. Cheap parts."

Issues Comparison

B58 3

● MODERATE
Coolant expansion tank / line failure — early units €150--€350 60,000 km--120,000 km
○ MINOR
Plastic charge pipe crack €80--€200 60,000 km--150,000 km
○ MINOR
Valve cover gasket oil leak €200--€450 80,000 km--160,000 km

M50/M52 3

● MODERATE
Cooling system plastics (tank, housing, impeller) €150--€350 100,000 km--180,000 km
○ MINOR
VANOS oil seal wear (M52 only) €80--€200 120,000 km--200,000 km
○ MINOR
Valve cover / oil pan gasket leaks €100--€300 150,000 km--∞

Models

Full B58 Report Full M50/M52 Report