Mazda Millenia vs Lexus IS

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	Mazda Millenia	Lexus IS
Complaints on file	338	815
Model years covered	1991–2003	1999–2026
Worst model year	1995	2006
Best model year	1996	2015
Crashes reported	33	68
Fires reported	2	9
Injuries reported	31	38
Deaths reported	2	1
Most complained-about part	Engine & Cooling	Body & Structure
Share of complaints involving harm	20.1%	14.2%

Mazda Millenia by year

1 132 17 21 36 35 36 37 22 1

91 95 96 97 98 99 00 01 02 03

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

What breaks

Engine & Cooling 73 21.6%

Transmission & Drivetrain 49 14.5%

Airbags 35 10.4%

Electrical System 25 7.4%

Suspension 16 4.7%

Other & Unspecified 16 4.7%

Fuel & Propulsion 14 4.1%

Windows, Mirrors & Wipers 13 3.8%

Lexus IS by year

1 1 17 18 12 13 185 171 143 55 52 22 29 13 16 14 2 16 3 3 9 2 6 9 1 1 1

99 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

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

What breaks

Body & Structure 148 18.2%

Other & Unspecified 116 14.2%

Airbags 115 14.1%

Windows, Mirrors & Wipers 95 11.7%

Engine & Cooling 78 9.6%

Electrical System 45 5.5%

Fuel & Propulsion 37 4.5%

Steering 34 4.2%