Toyota Yaris vs Mercury Mountaineer

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	Toyota Yaris	Mercury Mountaineer
Complaints on file	1,096	2,646
Model years covered	2006–2020	1996–2010
Worst model year	2008	1997
Best model year	2020	2010
Crashes reported	243	191
Fires reported	23	91
Injuries reported	177	148
Deaths reported	5	5
Most complained-about part	Airbags	Transmission & Drivetrain
Share of complaints involving harm	40.9%	16.4%

Toyota Yaris by year

9 331 289 134 123 31 47 11 4 22 8 21 7 43 16

06 07 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

Airbags 375 34.2%

Brakes 109 9.9%

Acceleration & Cruise Control 73 6.7%

Electrical System 71 6.5%

Engine & Cooling 53 4.8%

Body & Structure 53 4.8%

Suspension 52 4.7%

Steering 39 3.6%

Mercury Mountaineer by year

3 399 298 182 164 32 504 220 271 113 153 119 156 8 24

96 97 98 99 00 01 02 03 04 05 06 07 08 09 10

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

What breaks

Transmission & Drivetrain 399 15.1%

Tires 364 13.8%

Body & Structure 298 11.3%

Acceleration & Cruise Control 221 8.4%

Engine & Cooling 217 8.2%

Electrical System 190 7.2%

Brakes 142 5.4%

Seats 127 4.8%