Audi A5 Mk2 (F5)
The second-generation Audi A5 (F5) is a much better used bet than its predecessor, feeling virtually identical to the A4 B9 underneath but wrapped in a far more stylish coupe, convertible, or Sportback body. It sits comfortably in the premium executive segment, offering slightly higher running costs than an A4 but delivering excellent motorway refinement and strong residual values. UK ownership is usually characterized by minor cooling-system leaks, diesel AdBlue hardware issues, and occasional MMI software gremlins rather than catastrophic engine failures. It suits image-conscious professionals and high-mileage commuters looking for an elegant, comfortable, and tech-laden grand tourer.
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Common Faults & Reliability
These are the most common documented problems for the Audi A5 Mk2 (F5), sorted by their typical impact and frequency.
Water Pump / Thermostat Housing Leak
medium severityLike the B9 A4, the A5 uses plastic cooling components that can seep or fail, causing repeated low-coolant warnings without an obvious puddle.
NOx Sensor / AdBlue Faults
medium severityDiesel SCR hardware can trigger AdBlue countdowns, engine-management lights, and expensive sensor or injector replacement once the car is out of warranty.
MMI / Virtual Cockpit Glitches
low severityScreen freezes, camera dropouts, and Bluetooth instability are common enough on early cars to be worth a deliberate test during inspection.
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Example Audi A5 Mk2 (F5) Vehicles
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