FaultScore

Porsche 911 Carrera vs Mercedes Benz CLA 250

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 Porsche 911 Carrera Mercedes Benz CLA 250
Complaints on file 55 137
Model years covered 1997–2020 2018–2025
Worst model year 2018
Best model year 2020
Crashes reported 3 8
Fires reported 6 2
Injuries reported 3 12
Deaths reported 0 0
Most complained-about part Engine & Cooling Electrical System
Share of complaints involving harm 21.8% 16.1%

Porsche 911 Carrera by year

97 99 00 01 02 03 04 05 13 14 17 20
Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade: A B C D F ungraded

What breaks

Engine & Cooling 13 23.6%
Airbags 10 18.2%
Electrical System 6 10.9%
Seat Belts 5 9.1%
Fuel & Propulsion 4 7.3%
Suspension 3 5.5%
Transmission & Drivetrain 2 3.6%
Steering 2 3.6%

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%