N54 vs B58

Side-by-side reliability comparison

Higher reliability score
B58 BEST 93/100
+61 points over N54
0 / 100
AVOID N54 BMW
0 / 100
BEST B58 BMW

Specifications

N54
B58
Brand
BMW
BMW
Verdict
AVOID
BEST
Reliability
32
93
Years
2006--2010
2015--present
Displacement
2979 cc
2998 cc
Layout
I6
I6
Type
Petrol Turbo
Petrol Turbo
Power
306 hp
326--387 hp
Known Issues
4
3
Total Risk Cost
€4,500--€10,700
€430--€1,000

Character

N54

"Huge tuning potential ("European 2JZ"). Constant problems. Project car, not daily."

B58

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

Issues Comparison

N54 4

◆ CRITICAL
High pressure fuel pump (HPFP) failure €800--€1,500 30,000 km--100,000 km
◆ CRITICAL
Turbocharger failure (one or both) €1,500--€4,000 100,000 km--200,000 km
▲ HIGH
Piezoelectric injector failure (x6) €1,800--€4,000 60,000 km--150,000 km
● MODERATE
Wastegate rattle / actuator failure €400--€1,200 60,000 km--150,000 km

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

Models

N54 5

1 Series E82 2011--2012 1 Series E82 2008--2010 Z4 E89 2009--2016 3 Series E90 2006--2010 5 Series E60 2007--2010

B58 26

6 Series F13 2015--2018 6 Series G32 2017--2023 1 Series F20 2015--2016 3 Series F30 2015--2019 1 Series F20 2016--2019 5 Series F10 2016--2017 4 Series F32 2016--2020 2 Series F22 2016--2021 7 Series G11 2016--2022 GR Supra A90 2019--present X5 G05 2020--present 3 Series G20 2019--present X4 G02 2018--present X5 G05 2018--present X6 G06 2019--present X7 G07 2019--present GR Supra A90 2022--present 5 Series G30 2017--2023 8 Series G15 2018--present 2 Series G42 2022--present 4 Series G22 2020--present X3 G01 2017--2024 Z4 G29 2019--present 7 Series G70 2023--present 5 Series G60 2024--present 340i F30 LCI 2015--2019 Sedan
Full N54 Report Full B58 Report