2020 Audi A6 Pre-Purchase Inspection Checklist
Known Issues — 2020 Audi A6
MODERATE
48V mild hybrid BSG belt starter-generator failures
MODERATE
MMI dual touchscreen ghost inputs and unresponsive displays
MODERATE
Air suspension adaptive air spring failure causing corner sag
MODERATE
Carbon buildup on direct injection intake valves
MODERATE
ADAS radar module failures causing driver assistance shutoff
MINOR
Battery drain issues from excessive standby power consumption
What to Inspect
- Test dual MMI touchscreens for responsiveness and accuracy
- Test all air suspension modes — all corners leveling correctly
- Check 48V mild hybrid system for fault codes
- Verify all ADAS driver assistance features are active and calibrated
- Scan all modules for fault codes
- Check battery voltage after sitting — should not drop below 12V
Expected Maintenance Costs
| Service | Interval | Cost |
|---|---|---|
| Oil change (synthetic) | every 10,000 miles | $150-$200 |
| Spark plugs (V6) | every 40,000 miles | $200-$300 |
| Quattro rear differential fluid | every 40,000 miles | $150-$220 |
| Air suspension service (if needed) | as needed | $800-$2,000 |
| Brake fluid flush | every 2 years | $120-$160 |
| Cabin filter + air filter | every 20,000 miles | $100-$150 |
| Brake pads and rotors (front) | every 40,000-60,000 miles | $500-$900 |
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