S68 vs M54

Side-by-side reliability comparison

Higher reliability score
M54 BEST 93/100
+18 points over S68
0 / 100
ACCEPTABLE S68 BMW
0 / 100
BEST M54 BMW

Specifications

S68
M54
Brand
BMW
BMW
Verdict
ACCEPTABLE
BEST
Reliability
75
93
Years
2023--present
2000--2006
Displacement
4395 cc
2979 cc
Layout
V8
I6
Type
Petrol Turbo
Petrol Na
Power
585--727 hp
170--231 hp
Known Issues
1
4
Total Risk Cost
€0--€0
€530--€1,250

Character

S68

"Latest M V8. XM/M5 G70. Cross-plane crank, 48V mild hybrid on some variants. Too new for long-term data but BMW learned from N63/S63 mistakes. Front-accessible turbos. Early data positive."

M54

"Peak old-school BMW. Raspy, high-revving, raw. The benchmark. 300k+ km routine."

Issues Comparison

S68 1

○ MINOR
Too new for long-term data €0--€0 0 km--0 km

M54 4

● MODERATE
Cooling plastics — water pump impeller critical €200--€450 80,000 km--150,000 km
● MODERATE
DISA valve failure (intake manifold flap) €80--€200 80,000 km--160,000 km
● MODERATE
Double VANOS oil seal wear €150--€350 100,000 km--180,000 km
○ MINOR
Valve cover gasket oil leak €100--€250 100,000 km--200,000 km

Models

S68 3

7 Series G70 2023--present X5 G05 2023--present M5 G90 2024--present

M54 13

5 Series E39 2000--2003 3 Series E46 2001--2005 5 Series E60 2003--2007 5 Series E60 2003--2005 5 Series E39 2000--2003 Z4 E85 2003--2005 3 Series E46 2001--2005 5 Series E60 2003--2005 X5 E53 2000--2006 5 Series E39 2000--2003 Z4 E85 2003--2005 3 Series E46 2001--2005 Z3 E36/7 2000--2002
Full S68 Report Full M54 Report