B58 vs M54 — Reliability Comparison

Specifications

B58

M54

Brand

BMW

Verdict

BEST

Reliability

93

Years

2015--present

2000--2006

Displacement

2998 cc

2979 cc

Layout

I6

Type

Petrol Turbo

Petrol Na

Power

326--387 hp

170--231 hp

Known Issues

3

4

Total Risk Cost

€430--€1,000

€530--€1,250

Character

B58

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

M54

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

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

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

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

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