Reliability & 5-year cost of ownership — 2005 Audi S4
NHTSA data on file today
The 2005 Audi S4 has 2 NHTSA recall campaigns and 43 owner complaints on file as of . Recall data is refreshed daily from NHTSA.
Recall campaigns on file
- NHTSA #18V427000 Passenger Frontal Air Bag Inflator May Explode NHTSA notice
- NHTSA #17V032000 Passenger Frontal Air Bag Inflator May Rupture NHTSA notice
Most-cited components in owner complaints
- Exterior Lighting 33 complaints
- Electrical System 5 complaints
- Air Bags 4 complaints
- Engine and Engine Cooling 3 complaints
- Engine 1 complaint
- Fuel System, Gasoline 1 complaint
Of the 43 complaints on file, 2 report a crash; across all 43 complaints, owners report 1 injury (owner-reported, not verified by NHTSA).
Average
Estimated 5-year repair + maintenance cost: $4,500–$8,000AI estimate — not from NHTSA data
The 2005 Audi S4 shows average reliability with notable recalls related to airbag inflators and complaints primarily for exterior lighting. Limited complaints on other components suggest moderate issues but no widespread failures. The vehicle has reasonable repair and maintenance costs, though certain failures like engine cooling and electrical system need attention.
Most-common failures
| Part | Typical mileage (AI estimate) | Cost range (AI estimate) | Frequency |
|---|---|---|---|
| exterior lighting | 60,000–90,000 miles | $200–$400 | very common |
| electrical system | 70,000–100,000 miles | $300–$600 | common |
| engine cooling | 80,000–120,000 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 and filter changes
- Timing belt replacement
- Brake fluid replacement
- Coolant system check
- Transmission fluid change
- Spark plug replacement
Warning signs to watch for
Symptoms that signal a major upcoming repair.
- Unusual exhaust smoke
- Dimming or failing lights
- Overheating engine
- Battery drainage issues
Generated by gpt-4o on from the NHTSA recall campaigns and owner-complaint counts on file for the 2005 Audi S4 at the time. The rating is an AI assessment; cost and mileage figures are AI estimates, not NHTSA data.