SuspensionHigh
Air spring and compressor failures
- Typically appears
- 60,000+ miles
- What to inspect
- Raise and lower the ride height fully on the drive
2018–2025 Audi Q8 · common problems & known faults
A flagship SUV where electronics and air suspension carry the biggest repair risk on high mileage cars.
Compiled & reviewed by the VehicleFaults Research Team · last reviewed August 2026
Quick answer
The most commonly reported faults on the 2018–2025 Audi Q8 are Air spring and compressor failures, 48V mild hybrid and battery management warnings and Heavy front disc and pad wear from kerb weight. 1 of the documented issues are rated high severity · inspect these first. Full inspection points, onset mileage and what to check are listed below.
Reliability snapshot
Based on the documented faults on this page for the Audi Q8.
7.3/ 10
- Critical
- 0
- High
- 1
- Medium
- 3
- Low
- 0
Guidance only · reflects reported patterns, not a specific car's condition.
Known faults to check
ElectricalMedium
48V mild hybrid and battery management warnings
- Typically appears
- 50,000+ miles
- What to inspect
- Scan for stored faults and check start stop behaviour
BrakesMedium
Heavy front disc and pad wear from kerb weight
- Typically appears
- 30,000+ miles
- What to inspect
- Inspect disc lips and pad thickness through the wheels
EngineMedium
Carbon build up on direct injection petrol V6
- Typically appears
- 70,000+ miles
- What to inspect
- Check for lumpy idle and misfire codes
Inspecting a Audi Q8?
Generate a full, tickable pre-purchase checklist tailored to this exact vehicle · add photos and notes as you inspect. Try it free.
Check this exact carFrequently asked questions
Are the electronics reliable?
Mostly, but a full diagnostic scan before purchase is essential on this generation.
What kills value fastest?
An air suspension fault. Buyers walk away as soon as one corner sags.
Is the diesel or petrol better used?
The diesel is the calmer used buy for mileage.
Sources & further reading
Faults are compiled from documented recalls, technical bulletins, owner reports and mechanic sources, then reviewed for accuracy. This is guidance only · not a substitute for a professional inspection.