2015–2020 Audi Q7 Mk2 (4M)
Browse our directory of 2015–2020 Audi Q7 Mk2 (4M) vehicles. Access instant MOT history reports, tax status, and reliability insights for any registration listed below.
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Common Problems & Reliability
The 2015–2020 Audi Q7 Mk2 (4M) has 5 known issues. 2 of these are classified as serious faults that could be expensive to repair. 2 are moderate concerns worth inspecting before purchase.
Air Suspension Strut / Compressor Failure
SeriousThe 4M rides beautifully on air, but leaking struts or tired compressors can leave the car sagging and trigger costly chassis warnings.
Symptoms: Uneven ride height after parking, Compressor running loudly or for too long...
Est. repair cost: £700–£2,000
48V Mild Hybrid BSG Failure
SeriousThe belt-starter-generator (BSG) in the 48V mild hybrid system can fail, disabling start-stop and eventually draining both batteries, leaving the car stranded.
Symptoms: Electrical system malfunction warning, Start-stop inactive...
Est. repair cost: £0 (recall) – £1,500
NOx Sensor / AdBlue System Faults
ModerateDiesel SCR faults are the most common high-value annoyance on the 4M, often causing AdBlue warnings and eventual no-start countdowns even when the tank has been topped up.
Symptoms: AdBlue warning or no-start countdown, Engine light with emissions faults...
Est. repair cost: £250–£1,500
MMI / Electrical Module Glitches
ModerateOwners commonly report frozen MMI screens, camera faults, battery drain, and keyless-entry glitches - usually software or module related, but expensive if neglected outside warranty.
Symptoms: Blank or rebooting MMI screen, Camera unavailable or parking-sensor errors...
Est. repair cost: £0–£1,200
Software and Infotainment Bugs
MinorThe complex MMI and vehicle management software can cause spontaneous reboots, camera dropouts, and various phantom warning lights.
Symptoms: Spontaneous MMI reboot, Reversing camera unavailable...
Est. repair cost: £0–£500
Buying Tips for the 2015–2020 Audi Q7 Mk2 (4M)
- ✓Diesel buyers should look hard at AdBlue and NOx-sensor history because repeated no-start countdowns are a known pain point
- ✓Air-suspension cars must sit level after standing and should not show "level control" warnings after startup
- ✓Test the MMI, digital dash, cameras, keyless entry, and power tailgate thoroughly because module faults can be expensive to chase
- ✓If the car has towed regularly, ask for gearbox servicing and listen for driveline shunt at low speed
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