2025 Audi A4 Pre-Purchase Inspection Checklist
Known Issues — 2025 Audi A4
MINOR
Early production software bugs in MMI requiring dealer updates
MODERATE
Carbon buildup on intake valves — monitor and clean as needed
MODERATE
Oil consumption on some TFSI units
MINOR
ADAS calibration sensitivity causing occasional false warnings
MINOR
Wireless Apple CarPlay intermittent disconnects on some units
MODERATE
Quattro rear differential oil seal leaks on some AWD models
What to Inspect
- Confirm all software updates have been applied at dealer
- Verify warranty coverage is active and transferable
- Test all ADAS systems for proper function
- Check oil level — ask about any top-ups between services
- Scan all modules for fault codes
- Verify wireless CarPlay/Android Auto connectivity
Expected Maintenance Costs
| Service | Interval | Cost |
|---|---|---|
| Oil change (synthetic) | every 10,000 miles | $130-$170 |
| DSG S tronic service | every 40,000 miles | $300-$450 |
| Spark plugs | every 40,000 miles | $150-$200 |
| Quattro rear differential fluid | every 40,000 miles | $150-$220 |
| Brake fluid flush | every 2 years | $100-$150 |
| Pollen/cabin filter + air filter | every 20,000 miles | $80-$120 |
| Brake pads and rotors (front) | every 40,000-60,000 miles | $400-$700 |
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