Demand full service records (not just Carfax) and verify big-ticket history: at least one car needed a rear-differential replacement covered by Audi at nine years old, a hint of a possible weak point. Read the PR/option codes to confirm spec (sport exhaust, sport differential, RS sport suspension), and budget for brakes regardless.
Buying: records, rear diff, and spec
Audi RS5 (B8) · buying-advice