S63 vs M50
Side-by-side reliability comparison
Higher reliability score
M50
BEST
88/100
+23 points over S63
0
/ 100
CAUTION
S63
BMW
0
/ 100
BEST
M50
BMW
Specifications
S63
M50
Brand
BMW
BMW
Verdict
CAUTION
BEST
Reliability
65
88
Years
2011--present
1990--1996
Displacement
4395 cc
2494 cc
Layout
V8
I6
Type
Petrol Turbo
Petrol Na
Power
560--625 hp
150--192 hp
Known Issues
2
2
Total Risk Cost
€2,000--€6,500
€400--€1,100
Character
S63
"F10/F90 M5 engine. Hot-V turbo layout. More reliable than N63 base engine due to stronger internals. Rod bearing concern on early units. Oil consumption. Expensive maintenance but less catastrophic than N63."
M50
"Cast iron block legend. One of BMW's most reliable ever. M50TU added single VANOS. Strong internals handle 300k+ km. Cooling plastics only weakness."
Issues Comparison
S63 2
▲ HIGH
Rod bearing concern (early units)
● MODERATE
Oil consumption
M50 2
▲ HIGH
Water pump plastic impeller failure
● MODERATE
VANOS unit wear (M50TU)