Mercedes Benz S550 vs Buick Roadmaster
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 S550 | Buick Roadmaster |
|---|---|---|
| Complaints on file | 184 | 452 |
| Model years covered | 2010–2017 | 1989–1999 |
| Worst model year | 2015 | 1994 |
| Best model year | 2016 | 1996 |
| Crashes reported | 19 | 61 |
| Fires reported | 11 | 12 |
| Injuries reported | 13 | 43 |
| Deaths reported | 0 | 0 |
| Most complained-about part | Other & Unspecified | Brakes |
| Share of complaints involving harm | 23.4% | 25.7% |
Mercedes Benz S550 by year
What breaks
Other & Unspecified
24
13.0%
Steering
18
9.8%
Fuel & Propulsion
16
8.7%
Body & Structure
15
8.2%
Windows, Mirrors & Wipers
13
7.1%
Seat Belts
12
6.5%
Engine & Cooling
11
6.0%
Electrical System
11
6.0%
Buick Roadmaster by year
What breaks
Brakes
63
13.9%
Electrical System
44
9.7%
Engine & Cooling
40
8.8%
Suspension
38
8.4%
Airbags
33
7.3%
Windows, Mirrors & Wipers
29
6.4%
Transmission & Drivetrain
27
6.0%
Acceleration & Cruise Control
27
6.0%