B48 vs M57

Side-by-side reliability comparison

Higher reliability score
M57 BUY 84/100
+2 points over B48
0 / 100
BUY B48 BMW
0 / 100
BUY M57 BMW

Specifications

B48
M57
Brand
BMW
BMW
Verdict
BUY
BUY
Reliability
82
84
Years
2014--present
1998--2012
Displacement
1998 cc
2993 cc
Layout
I4
I6
Type
Petrol Turbo
Diesel
Power
184--255 hp
184--286 hp
Known Issues
3
0
Total Risk Cost
€650--€1,350
€0--€0

Character

B48

"B58s little brother. Efficient, smooth. Remap to 260hp safe. Best modern 4-cyl BMW."

M57

"Legendary diesel six. Powered E46 330d to E90 335d. Smooth, torquey, reliable. Swirl flaps and turbo actuator at high mileage."

Issues Comparison

B48 3

● MODERATE
Coolant vent line failure €100--€250 40,000 km--100,000 km
● MODERATE
Oil filter housing gasket — early units (2014-2016) €250--€500 40,000 km--100,000 km
○ MINOR
Intake valve carbon buildup (DI) €300--€600 60,000 km--120,000 km

M57 0

No documented issues.

Models

B48 40

6 Series G32 2017--2023 X3 G01 2017--2024 4 Series G22 2020--present Z4 G29 2019--present 2 Series Active Tourer U06 2022--present 4 Series F32 2016--2020 3 Series G20 2019--present GR Supra A90 2020--present 1 Series F20 2015--2019 5 Series G30 2017--2023 X2 F39 2018--2023 1 Series F40 2020--present 2 Series Active Tourer U06 2022--present X1 F48 2015--2022 2 Series F22 2016--2021 5 Series G30 2017--2023 3 Series F30 2015--2019 X4 G02 2018--present X3 G01 2017--2024 4 Series G22 2020--present 2 Series G42 2022--present 3 Series G20 2019--present Z4 G29 2019--present 3 Series F30 2015--2019 2 Series Active Tourer F45 2014--2021 5 Series G60 2023--present 1 Series F20 2015--2019 4 Series F32 2016--2020 2 Series Active Tourer U06 2022--present 5 Series G60 2023--present 5 Series G30 2017--2023 X3 G01 2020--2024 3 Series G20 2019--present 1 Series F40 2019--present 320i F30 LCI 2015--2019 Sedan 320i GT F34 2013--2016 Gran Tourer 320i Touring F31 2012--2019 Wagon 330i GT F34 2016--2019 Gran Tourer 330i Touring G21 2019--2024 Wagon 420i Gran Coupe F36 2014--2020 Gran Coupe

M57 17

5 Series E39 2000--2003 5 Series E60 2003--2007 X5 E53 2001--2003 3 Series E46 1999--2003 5 Series E39 1998--2000 X5 E53 2003--2006 5 Series E39 2000--2003 7 Series E65 2002--2008 5 Series E60 2003--2007 3 Series E46 2003--2005 3 Series E90 2005--2008 3 Series E90 2006--2010 X5 E70 2007--2010 5 Series E60 2007--2010 5 Series E60 2007--2010 3 Series E90 2006--2008 5 Series E60 2004--2010
Full B48 Report Full M57 Report