Reliability & 5-year cost of ownership — 2018 Audi A4
NHTSA data on file today
The 2018 Audi A4 has 1 NHTSA recall campaign and 43 owner complaints on file as of . Recall data is refreshed daily from NHTSA.
NCAP overall rating: 5.0 out of 5 stars, averaged across 2 NHTSA-tested trims.
Recall campaigns on file
- NHTSA #21V874000 Disabled Passenger Air Bag NHTSA notice
Most-cited components in owner complaints
- Unknown or Other 18 complaints
- Electrical System 16 complaints
- Fuel/Propulsion System 6 complaints
- Structure 6 complaints
- Engine 5 complaints
- Power Train 5 complaints
Of the 43 complaints on file, 1 reports a crash (owner-reported, not verified by NHTSA).
Average
Estimated 5-year repair + maintenance cost: $7,500–$12,000AI estimate — not from NHTSA data
The 2018 Audi A4 has an average reliability rating due to moderate electrical complaints and a recall affecting the seat occupancy detection system. It performs well overall but has notable issues in electrical components, which can result in future repair costs.
Most-common failures
| Part | Typical mileage (AI estimate) | Cost range (AI estimate) | Frequency |
|---|---|---|---|
| electrical system | 30,000–60,000 miles | $400–$800 | very common |
| fuel/propulsion system | 50,000–80,000 miles | $300–$750 | common |
| engine | 60,000–90,000 miles | $500–$1,500 | occasional |
| seats | 40,000–70,000 miles | $200–$600 | occasional |
| forward collision avoidance | 40,000–70,000 miles | $300–$700 | 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 change every 10,000 miles
- Brake fluid replacement every 40,000 miles
- Spark plug replacement at 40,000 miles
- Tire rotation every 10,000 miles
- Coolant flush every 60,000 miles
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- Electrical warning lights
- Engine performance drop
- Unresponsive seat heaters
- Sensor malfunction warnings
- Fuel system leaks or odors
Generated by gpt-4o on from the NHTSA recall campaigns and owner-complaint counts on file for the 2018 Audi A4 at the time. The rating is an AI assessment; cost and mileage figures are AI estimates, not NHTSA data.