FaultScore

Mercedes Benz CLA 250 vs BMW 540I

Both cars' complete complaint records, side by side.

Read the totals carefully. NHTSA publishes no sales figures, so the car that sold more collects more complaints regardless of quality. The rows worth weighing are the proportions — the share of complaints that involved harm, and which part dominates.

Measure Mercedes Benz CLA 250 BMW 540I
Complaints on file 137 340
Model years covered 2018–2025 1994–2025
Worst model year 2018 2018
Best model year 2020 1994
Crashes reported 8 26
Fires reported 2 7
Injuries reported 12 14
Deaths reported 0 0
Most complained-about part Electrical System Engine & Cooling
Share of complaints involving harm 16.1% 13.8%

Mercedes Benz CLA 250 by year

Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade: A B C D F ungraded

What breaks

Electrical System 23 16.8%
Other & Unspecified 20 14.6%
Engine & Cooling 17 12.4%
Airbags 13 9.5%
Fuel & Propulsion 11 8.0%
Driver Assist & Collision Avoidance 10 7.3%
Body & Structure 9 6.6%
Steering 6 4.4%

BMW 540I by year

Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade: A B C D F ungraded

What breaks

Engine & Cooling 70 20.6%
Airbags 49 14.4%
Transmission & Drivetrain 23 6.8%
Brakes 21 6.2%
Steering 17 5.0%
Seats 17 5.0%
Seat Belts 16 4.7%