Audi • Reliability
Audi 2.9T (EA839) Engine Reliability: Pre-2019 Valvetrain Flaw & Plastic Cooler Reality
Audi 2.9T engine reliability: Pre-2019 valvetrain flaw, charge-air cooler failures, and transmission issues across RS5 B9, RS4 B9, SQ8.
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Audi • Used Market
Used Audi RS5 B9 Buying Guide: The Date Code Hunt
How to inspect a used Audi RS5 B9. Why the manufacture date is the single most important factor in your purchase.
Audi • Reliability
Audi RS5 B9 Charge-Air Cooler Failure: The Hydrolock Risk
Audi RS5 B9 EA839 charge-air cooler failure guide: plastic end tank cracks, stone damage, hydrolock risk, symptoms, and preventive aluminum upgrade costs.
Audi • Reliability
Audi RS5 B9 Common Problems: The 5 EA839 Failures You Must Know
Audi RS5 B9 2.9T EA839 common problems: pre-2019 rocker arm failure, charge-air cooler cracks, cooling system plastic failures, and mileage-based patterns.
Audi • Ownership Costs
Audi RS5 B9 Ownership Costs: The Quattro Tax
Real-world running costs for the RS5 (2018–2023). Why tires, brakes, and cooling system upgrades make this 'daily driver' expensive.
Audi • Reliability
Audi RS5 B9 Reliability (2018–2023): The Silent Valvetrain Threat
Why the PRE-2019 RS5 is a 'time bomb' (Rocker Arms) and why POST-2019 owners must fear plastic coolant pipes.