Reliability & cost of ownership
Peterbilt 378 Reliability & Common Problems
How reliable is the Peterbilt 378? Compare every model year side by side — NHTSA recalls, owner complaints, and crash-test stars — then open the year you're shopping for a full reliability and repair-cost forecast.
Peterbilt 378 problems by model year
11 recall entries and 3 owner complaints on file across 3 model years, sourced from the federal NHTSA database.
| Year | Recalls | Complaints | NCAP stars | Full report |
|---|---|---|---|---|
| 2006 378 | 6 | 1 | No NCAP test | Reliability forecast → |
| 2004 378 | 3 | 1 | No NCAP test | Reliability forecast → |
| 1996 378 | 2 | 1 | No NCAP test | Reliability forecast → |
Most-complained-about components
Owner complaints filed with NHTSA against the Peterbilt 378, grouped by the component each complaint names — the fastest read on where this model gives trouble.
- steering1 complaint
- engine and engine cooling1 complaint
- service brakes1 complaint
- air1 complaint