2018 · B9
2018 Audi A4 Reliability and Buying Guide
2018 Audi A4 B9 reliability, EA888 and TDI checks, S tronic behavior, cooling risks, and pre-purchase priorities.
Verdict
A refined B9 year with strong fundamentals. Exact engine code, cooling integrity, oil behavior, and gearbox history still control the risk.
Inspect first
- Identify exact engine and gearbox codes
- Inspect thermostat and coolant system
- Review oil-use history
- Scan gearbox adaptations and faults
Why it stands out
High-quality B9 cabinEfficient engine rangeStrong motorway comfort