Mercedes Benz C300 vs Buick Regal

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 C300	Buick Regal
Complaints on file	1,788	4,456
Model years covered	2008–2009	1978–2020
Worst model year	—	1996
Best model year	—	2004
Crashes reported	47	227
Fires reported	53	335
Injuries reported	41	169
Deaths reported	0	5
Most complained-about part	Airbags	Brakes
Share of complaints involving harm	7.9%	16.5%

Mercedes Benz C300 by year

942 846

08 09

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

What breaks

Airbags 459 25.7%

Electrical System 428 23.9%

Steering 273 15.3%

Lights 228 12.8%

Other & Unspecified 69 3.9%

Engine & Cooling 57 3.2%

Suspension 49 2.7%

Brakes 38 2.1%

Buick Regal by year

1 3 1 4 6 10 14 28 181 150 107 303 204 118 146 218 273 174 376 301 245 229 150 139 94 8 1 1 2 441 138 137 51 50 61 26 33 29 3

78 79 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 00 01 02 03 04 05 08 09 10 11 12 13 14 15 16 17 18 19 20

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

What breaks

Brakes 867 19.5%

Engine & Cooling 811 18.2%

Electrical System 591 13.3%

Steering 325 7.3%

Lights 241 5.4%

Transmission & Drivetrain 210 4.7%

Windows, Mirrors & Wipers 172 3.9%

Airbags 149 3.3%