Reliability & 5-year cost of ownership — 2003 Peterbilt 379
NHTSA data on file today
The 2003 Peterbilt 379 has 5 NHTSA recall campaigns and 3 owner complaints on file as of . Recall data is refreshed daily from NHTSA.
Recall campaigns on file
- NHTSA #07V044000 BRAKE PROPORTIONING VALVE ASSEMBLY NHTSA notice
- NHTSA #03V410000 PACCAR/STEER AXLE ASSEMBLIES NHTSA notice
- NHTSA #03V343000 PACCAR/PETERBILT/BRAKES/STEERING NHTSA notice
- NHTSA #03V288000 PACCAR/REAR HUB RETAINING NUT NHTSA notice
- NHTSA #03V168000 PACCAR/FIFTH WHEELS/FATIGUE CRACKS NHTSA notice
Most-cited components in owner complaints
- Engine and Engine Cooling 1 complaint
- Fuel System, Diesel 1 complaint
- Wheels 1 complaint
Average
Estimated 5-year repair + maintenance cost: $15,000–$25,000AI estimate — not from NHTSA data
The 2003 Peterbilt 379 has a moderate number of recalls, mainly affecting the braking and steering systems, with some potential axle issues. The owner complaint counts are low, but these recalls suggest potential costly repairs if preventive measures are not taken.
Most-common failures
| Part | Typical mileage (AI estimate) | Cost range (AI estimate) | Frequency |
|---|---|---|---|
| service brakes | 100,000–150,000 miles | $1,200–$2,500 | common |
| steering linkages | 100,000–150,000 miles | $800–$1,600 | common |
| fifth wheel assembly | 150,000–200,000 miles | $500–$1,200 | occasional |
AI estimate — not from NHTSA data: the mileage bands and repair-cost ranges above. Get a written repair quote before you budget.
Scheduled maintenance to budget
Routine items every owner should plan for.
- Oil changes every 15,000 miles
- Brake inspection every 20,000 miles
- Tire rotation every 30,000 miles
- Transmission fluid change every 50,000 miles
- Coolant system flush every 60,000 miles
- Fifth wheel maintenance annually
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- Air brake pressure loss
- Loose steering response
- Excessive vibration when driving
Generated by gpt-4o on from the NHTSA recall campaigns and owner-complaint counts on file for the 2003 Peterbilt 379 at the time. The rating is an AI assessment; cost and mileage figures are AI estimates, not NHTSA data.