Peterbilt 579 vs BMW I4
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 | Peterbilt 579 | BMW I4 |
|---|---|---|
| Complaints on file | 55 | 135 |
| Model years covered | 2013–2026 | 2022–2024 |
| Worst model year | — | 2023 |
| Best model year | — | 2022 |
| Crashes reported | 1 | 38 |
| Fires reported | 7 | 3 |
| Injuries reported | 1 | 10 |
| Deaths reported | 0 | 0 |
| Most complained-about part | Transmission & Drivetrain | Electrical System |
| Share of complaints involving harm | 16.4% | 37.8% |
Peterbilt 579 by year
What breaks
Transmission & Drivetrain
11
20.0%
Electrical System
10
18.2%
Brakes
7
12.7%
Steering
5
9.1%
Tires
5
9.1%
Suspension
4
7.3%
Engine & Cooling
3
5.5%
Fuel & Propulsion
2
3.6%
BMW I4 by year
What breaks
Electrical System
24
17.8%
Other & Unspecified
21
15.6%
Driver Assist & Collision Avoidance
19
14.1%
Transmission & Drivetrain
17
12.6%
Brakes
11
8.1%
Acceleration & Cruise Control
7
5.2%
Fuel & Propulsion
7
5.2%
Engine & Cooling
6
4.4%