FaultScore

Mercedes Benz E550 vs Buick Rainier

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 E550 Buick Rainier
Complaints on file 214 525
Model years covered 2010–2017 2003–2007
Worst model year 2011 2004
Best model year 2014 2007
Crashes reported 4 33
Fires reported 4 24
Injuries reported 2 14
Deaths reported 0 0
Most complained-about part Airbags Electrical System
Share of complaints involving harm 4.7% 13.5%

Mercedes Benz E550 by year

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

What breaks

Airbags 89 41.6%
Suspension 51 23.8%
Electrical System 12 5.6%
Brakes 10 4.7%
Body & Structure 9 4.2%
Steering 8 3.7%
Engine & Cooling 7 3.3%
Other & Unspecified 7 3.3%

Buick Rainier 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 147 28.0%
Lights 57 10.9%
Suspension 25 4.8%
Engine & Cooling 22 4.2%
Airbags 22 4.2%
Windows, Mirrors & Wipers 22 4.2%