Audi Q5 Mk2 (FY) Common Problems & Reliability
The Audi Q5 Mk2 (FY), launched in 2017, is a cornerstone of the UK’s premium SUV market, positioned as a more refined and tech-heavy alternative to rivals like the BMW X3 and Volvo XC60. Known as the "Goldilocks" of the Audi SUV range, it offers a prestige badge with a footprint that remains manageable for UK suburban life. The interior is a particular highlight, featuring high-quality materials and the optional Virtual Cockpit that still feels modern today. Reliability is generally superior to the first-generation model, but it is not without specific "gremlins." The S tronic (DSG) transmission is excellent but requires strict adherence to oil changes every 38,000 miles to avoid mechatronic failure. On diesel models, the 40 TDI is the most common engine, though high-mileage examples used primarily for city trips can suffer from blocked DPFs or AdBlue sensor faults. A critical concern for early cars was the Gateway Control Module located under the rear seat, which could short-circuit if liquid spilled on the bench—ensure the protective cover recall has been performed. When buying in the UK, prioritize cars with a full service history and check for any "binding" or vibration during tight, low-speed turns, which can indicate issues with the "Quattro with Ultra" system. Matrix LED headlights (standard on higher trims) are expensive to replace if damaged, so check for condensation or cracks. Finally, if the car has a panoramic sunroof, inspect the headliner for dampness, as blocked drain tubes can lead to water damage in the electrical fuse boxes.
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Detailed fault breakdown, symptoms, and estimated repair bills by production year.
Most Common Audi Q5 Mk2 (FY) Faults & Repair Costs
NOx Sensor / AdBlue Faults
Modern diesel emissions hardware can bring warning lights and countdowns.
AdBlue system warning, Engine light
Mild Hybrid BSG / Alternator Failure
The 48V belt-starter-generator can fail due to moisture ingress or transistor overheating, disabling start-stop and eventually draining both 48V and 12V batteries.
Electrical system malfunction warning, Start-stop inactive, Car refuses to start after standing
DPF Regeneration Problems
The diesel Q5 FY can suffer DPF blockages on short trips, triggering limp mode and expensive forced regenerations or replacement.
DPF warning light, Limp mode, Reduced fuel economy
Electrical and Infotainment Glitches
MMI screen freezes, Bluetooth dropouts, and sensor faults are common on early cars, sometimes requiring software updates or module replacement.
Frozen or rebooting MMI screen, Bluetooth disconnects, Parking sensor errors
Suspension Control Arm Bush Wear
Front suspension bushes and control arms can wear prematurely, causing clunks and vague steering on UK roads.
Clunks over bumps, Steering vagueness, Uneven tyre wear
Buying a used Audi Q5 Mk2 (FY)? Always check for hidden finance and write-off history.
Mechanical problems are only half the battle. Over 1 in 3 UK used cars checked have unpaid finance or accident write-off records that could cause you to lose the car or thousands in value.