Buick Regal vs Toyota Sienna

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	Buick Regal	Toyota Sienna
Complaints on file	4,456	10,828
Model years covered	1978–2020	1996–2020
Worst model year	1996	2011
Best model year	2004	2020
Crashes reported	227	558
Fires reported	335	117
Injuries reported	169	549
Deaths reported	5	10
Most complained-about part	Brakes	Body & Structure
Share of complaints involving harm	16.5%	11.4%

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%

Toyota Sienna by year

3 2 352 250 459 238 225 124 2,588 1,418 1,284 450 570 270 227 814 333 227 210 293 98 201 86 58 48

96 97 98 99 00 01 02 03 04 05 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

Body & Structure 2,801 25.9%

Airbags 886 8.2%

Doors, Latches & Locks 791 7.3%

Electrical System 708 6.5%

Other & Unspecified 616 5.7%

Brakes 590 5.4%

Transmission & Drivetrain 559 5.2%

Engine & Cooling 553 5.1%