IsItAGoodCar
Reliability Guide

Common Problems with the
2024 Audi Q7 Mk2 (4M)

A second, subtle facelift was announced in January 2024 for the 2025 model year and sold new in the UK until 2026: reshaped bumpers, HD Matrix LED headlights with laser high beam and new digital light signatures at the rear, updated mild-hybrid engines and refreshed software, giving the eleven-year-old 4M a final run before the 2026 all-new third generation.

What changed for 2024

  • •New front/rear light signatures with interchangeable digital lighting designs
  • •Retuned 3.0 TDI/48V mild-hybrid powertrains for stricter Euro rules
  • •Interior materials and MMI software updated; plug-in hybrid petrol removed from UK line-up

Common MOT watch-outs

  • !AdBlue dosing and NOx sensor faults on late 45/50 TDI cars still cause MOT emissions failures
  • !Air suspension rear-axle alignment drift (a repeated recall theme on 2019-21 builds) needs evidence of fixes
  • !Uneven tyre wear from the heavy rear axle writes tracking advisories if bushes are worn
3
Known Issues
1
Serious
2
Moderate
0
Minor

All Known Issues

Air Suspension Strut / Compressor Failure

SeriousSuspension & Chassis

The 4M rides beautifully on air, but leaking struts or tired compressors can leave the car sagging and trigger costly chassis warnings.

Est. Repair Cost: £700–£2,000
Warning Signs:

Uneven ride height after parking, Compressor running loudly or for too long, Level-control system warning

What to Inspect:
  • Inspect ride height after the car has stood overnight
  • Cycle the suspension through its height settings
  • Check whether any struts or the compressor have already been replaced
Verified by IsItAGoodCar Research TeamUpdated

NOx Sensor / AdBlue System Faults

ModerateExhaust & Emissions

Diesel 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.

Est. Repair Cost: £250–£1,500
Warning Signs:

AdBlue warning or no-start countdown, Engine light with emissions faults, Warnings returning soon after topping up AdBlue

What to Inspect:
  • Scan for NOx, SCR, and AdBlue injector faults
  • Ask for evidence of sensor, injector, or software replacements
  • Be cautious of cars with a recent reset but no repair invoice
Verified by IsItAGoodCar Research TeamUpdated

MMI / Electrical Module Glitches

ModerateElectrics & Electronics

Owners commonly report frozen MMI screens, camera faults, battery drain, and keyless-entry glitches - usually software or module related, but expensive if neglected outside warranty.

Est. Repair Cost: £0–£1,200
Warning Signs:

Blank or rebooting MMI screen, Camera unavailable or parking-sensor errors, Flat battery after standing or poor key recognition

What to Inspect:
  • Use navigation, media, cameras, and phone pairing together on a long drive
  • Check software campaign history and whether the car has had unexplained battery replacements
  • Test both keys, tailgate operation, and all lighting functions
Verified by IsItAGoodCar Research TeamUpdated

Buying Tips for 2024 Audi Q7 Mk2 (4M)

  • This MY2025 refresh is the best-used-value Q7: mature electronics with near-new residuals
  • Check the VIN on the DVLA recall checker - toe/camber and ECU campaigns touched many 4M cars
  • Any car with the full seven-seat layout fitted has the larger boot and better resale
2021–20232025–2026
Check a 2024 Audi Q7 Mk2 (4M) by Registration