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Known Faults Database

Audi Q7 problems, reliability and years to avoid

If you are considering buying a used Audi Q7, these are the common problems worth knowing about first. Our garage database tracks 2 known faults for this model, 2 of them rated high severity. Every one below is a repair bill a seller has good reason not to mention.

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Is the Audi Q7 reliable?

The Audi Q7 has 2 known faults in our database, 2 of them rated high severity. The most serious are engine (timing chain tensioner failure causing severe rattling) and suspension (air suspension compressor failure or air strut leaks causing the vehicle to sink). None of them makes the car a bad buy on its own; the risk is a seller who knows and says nothing.

That is a count of the faults we hold, not a reliability score. Popular cars get written about more, and a newer generation has had less time to show its faults.

Which Audi Q7 years should you avoid?

No year is a write-off on its own. What matters is which serious faults a given year and engine can have, and whether the car in front of you has had them fixed.

Years and engines with a serious known fault

  • 2004 to 2018, 3.0 V6 TDI (chain tensioner): timing chain tensioner failure causing severe rattling
  • 2006 to 2015, All with Adaptive Air Suspension: air suspension compressor failure or air strut leaks causing the vehicle

Each one is set out in full below, with the symptoms, the typical mileage and a rough repair cost.

Generation 1 of 12 known faults · 10 owner reports · 2 good notes

Audi Q7 4L (2006 to 2015) problems

Engine/EmissionsHigh severity📝 Editorial

Timing chain tensioner failure causing severe rattling; chains are located at the rear of the engine, requiring engine removal to fix. This is wear in the tensioner and chain drive itself, which is a high mileage failure, and is a separate job from the camshaft wear reported on the C7 A6 Allroad at much lower mileage

Rough guide
£2000-4000

Typical symptoms

  • loud metallic slapping/rattling from the back of the engine on cold start
  • rattle persisting for more than 3 seconds
  • engine management light

Affected vehicles

Engines:
3.0 V6 TDI (chain tensioner)
Typical mileage:
80000-140000 miles
🔍 We have a specific pre-purchase check for this faultCheck an advert →
SuspensionHigh severity📝 Editorial

Air suspension compressor failure or air strut leaks causing the vehicle to sink to the bump stops

Rough guide
£1000-2500

Typical symptoms

  • car sitting unevenly or very low when parked overnight
  • yellow or amber suspension warning light on dash
  • compressor running constantly and noisily

Affected vehicles

Engines:
All with Adaptive Air Suspension
Typical mileage:
70000-120000 miles
🔍 We have a specific pre-purchase check for this faultCheck an advert →

What owners report on the 4L

10 single reports, unconfirmed

One owner each, in their own words rewritten as a line, and not counted in our risk scoring. A fault joins the list above once a second report or an editorial source backs it.

  • Suspension and steering · September 2019A 2015 Audi Q7 at 47,000 miles experienced a broken rear coil spring.
  • Electrics · May 2019A 2015 Audi Q7 at 48,000 miles had a fault with its front radar sensor, requiring a £1600 replacement camera.
  • General · July 2018A 2017 Audi Q7 at 6,300 miles developed a whining noise during drive-off and final stages of stopping.
  • Gearbox and clutch · October 2017The front differential of an Audi Q7 failed at 150,000 miles, requiring a repair estimated at £5000.
  • Fuel system · July 2017A 2011 Audi Q7 at 120,000 miles experienced a fuel injector detaching due to a snapped bolt, costing £1000, followed by a similar £830 failure of another injector.
  • Interior · April 2017A 2016 Audi Q7 exhibited a rattle from the B pillar, which was also present in another dealer vehicle.
  • Electrics · October 2014A 2007 Audi Q7 4.2 TDI developed a flashing glow plug warning light and entered limp home mode, with £2000 spent on unresolved repairs.
  • Electrics · July 2012All four side door locking servos failed simultaneously on a four-year-old Audi Q7, with a repair cost quoted at £1000.
  • Suspension and steering · January 2012A four-month-old Audi Q7 experienced an air suspension software problem, for which a permanent resolution could not be found.
  • Electrics · January 2011An 07-plate Audi Q7 required MMI button replacement, followed by a dash panel display replacement after smoke from the dashboard.

What owners like about the 4L

2 notes
  • Audi received the overall Manufacturer Award for car security, with the Q7 recognised as the most secure large 4x4 range.
  • The Audi Q7 achieved a five-star Euro NCAP rating in 2015, with strong scores for occupant and pedestrian safety.

Sellers rarely admit these faults outright

We track 6 specific phrases sellers use in adverts to soft-pedal these exact issues. Paste any Audi Q7 advert and we check it in seconds.

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Audi Q7 recalls

Recall work is done by the manufacturer, and GOV.UK says you will not usually have to pay for it. These are the 15 DVSA recalls for the Q7, newest first. They do not tell you whether this particular car has had the work: for that, put the registration into the free GOV.UK MOT history check, which shows a recall status where the manufacturer shares it, or ask a franchised dealer to check the VIN.

🏛️ October 2025Cars built November 2020 to October 2023

Software update for battery control unit

On affected vehicles there may be defective battery modules which may result in a fire hazard when charging the high-voltage battery.

Put right by: Update the software of the high-voltage battery to improve the self-diagnosis capabilities. Vehicle owners are advised to not charge the high-voltage battery using external charging sources and also not use the e-tron modes "Battery charge" and "Battery hold" until the update is applied.

DVSA R/2025/441586 vehicles affected in the UK
🏛️ January 2024Cars built August 2023 to October 2023

The function of the side airbag may be restricted due to the airbag not being sufficiently secured to the front left seat frame.

The function of the side airbag may be restricted due to the airbag not being sufficiently secured to the front left seat frame.

Put right by: Conduct a check of the airbag to ensure it is secured correctly; if necessary the side airbag is to be correctly hooked in position and resecured.

DVSA R/2024/018187 vehicles affected in the UK
🏛️ November 2023Cars built June 2023 to June 2023

A weld seam on the outer backrest frame of the front seats may not have been made correctly.

A weld seam on the outer backrest frame of the front seats may not have been made correctly.

Put right by: Check the front seats and if required to replace the affected backrest.

DVSA R/2023/33113 vehicles affected in the UK
🏛️ February 2022Cars built November 2019 to February 2021

Following a previous campaign the toe and/or camber values on the rear axle may in certain circumstances incorrectly be changed without this being noticed

Following a previous campaign the toe and/or camber values on the rear axle may in certain circumstances incorrectly be changed without this being noticed.

Put right by: The wheel alignment must be checked and if necessary the suspension must be serviced on the affected vehicles.

DVSA R/2022/0365,327 vehicles affected in the UK
🏛️ June 2021Cars built November 2019 to February 2021

Rear axle suspension links nuts do not meet specifications

One or more nuts which do not meet the specifications may have been fitted on the rear axle suspension links.

Put right by: The affected nuts on the rear axle will be replaced on affected vehicles.

DVSA R/2021/23610,089 vehicles affected in the UK
🏛️ December 2020Cars built July 2020 to September 2020

Faulty crash sensors for airbag/restraint systems may have been fitted in both of the front doors

Faulty crash sensors for airbag / restraint systems may have been fitted in both of the front doors.

Put right by: The crash sensors for the side airbags (front) must be checked on the vehicles affected and replaced if necessary.

DVSA R/2020/37231 vehicles affected in the UK
🏛️ May 2020Cars built September 2019 to December 2019

Gear oil may escape due to a faulty welded joint on the gearbox oil line

It is possible that gear oil may escape due to a faulty welded joint on the gearbox oil line.

Put right by: The production date of the gear oil line must be checked first on the vehicles affected and the gear oil line must be replaced if necessary.

DVSA R/2020/1351,568 vehicles affected in the UK
🏛️ April 2020Cars built July 2019 to September 2019

The function of the locking mechanism on the front head restraints may be impaired

The function of the locking mechanism on the front head restraints may be impaired.

Put right by: The front head restraints must be replaced on the affected vehicles

DVSA R/2020/124130 vehicles affected in the UK
🏛️ March 2020Cars built June 2015 to February 2019

Bolted connection between steering shaft and steering rack may come loose

The bolted connection between the steering shaft and the steering rack may not have been tightened to the required torque

Put right by: The bolted connection between the steering shaft and the steering rack will be checked and if necessary replaced.

DVSA R/2020/075114 vehicles affected in the UK
🏛️ February 2020Cars built August 2019 to August 2019

In the event of an accident the air duct component in the curtain airbag could detach

The fastener securing an air duct component in the curtain airbag could detach in the event of an accident.

Put right by: Replace the igniter on the affected vehicles curtain airbags.

DVSA R/2020/0562 vehicles affected in the UK
🏛️ November 2019Cars built August 2019 to November 2019

Overheating can occur in the area of the interior mirror on the windscreen

Major overheating can occur in the area of the interior mirror on the windscreen due to the heating element of the front camera.

Put right by: The backlight masking screen of the front camera must be replaced and a software update carried out.

DVSA R/2019/3952,390 vehicles affected in the UK
🏛️ February 2019Cars built November 2018 to December 2018

An error in the casting process may affect the rigidity of the shock absorber fork

A casting process error may affect the rigidity of the front shock absorber fork.

Put right by: Replace the affected shock absorber forks.

DVSA R/2019/06531 vehicles affected in the UK
🏛️ September 2016Cars built May 2015 to September 2016

Third row seats may deform in event of a collision

On Audi Q7 vehicles with 7 seats manufactured within a specific period the indentations on the cross piece of the third row of seats were not made correctly. As a result the third row seat structure may deform in the event of an accident.

Put right by: A support bracket must be retrofitted on the vehicles affected.

DVSA R/2016/2206,775 vehicles affected in the UK
🏛️ April 2015Cars built April 2011 to April 2012

Fuel may leak

Fuel may leak from the injector rails. Drivers may notice a smell of fuel and or evidence of a leak

Put right by: On affected vehicles replace injector rails and seals.

DVSA R/2015/0311,073 vehicles affected in the UK
🏛️ October 2014Cars built January 2012 to August 2014

Reduction in braking performance

On affected vehicles engine oil may in isolated instances enter the brake servo via the vacuum feed lie.This may cause the brake servo diaphragm to rupture and loss of brake servo assistance.

Put right by: Replace vacuum line on affected vehicles.

DVSA R/2014/0985,755 vehicles affected in the UK

Recall data published by the Driver and Vehicle Standards Agency under the Open Government Licence v3.0. A recall listed here may not apply to every car of this model: the build dates and the registration check are what decide it.

Audi Q7 timing chain, and service intervals

A timing chain has no change interval, which is not the same as lasting for ever. Listen for it on a used Q7, and check the oil has been changed on time. These are the figures UK specialists work to.

Timing chainChain
3.0 V6 TDI, 3.0 TDI
No fixed replacement interval

3.0 V6 TDI engines suffer timing chain tensioner wear and chain stretch, with rattle commonly appearing around 90,000-100,000 miles; long-life oil and extended servicing are blamed for premature tensioner wear. The classic warning sign is a metallic rattle for 1-3 seconds on cold start. Ignoring it can let the chain jump teeth and destroy the engine. Repair is expensive because the chains sit at the back of the engine, typically GBP 1,500-2,000.

Automatic gearbox oil
8HP, ZF 8-SPEED, 8HP55, 8HP65
60,000 miles or 8 years, whichever comes first

Audi treats the ZF 8HP tiptronic as filled for life, but ZF, the gearbox maker, publishes official oil-change kits and a change procedure for the Audi 8HP55A/8HP65A/8HP90A/8HP95A units, which contradicts any sealed-for-life reading. UK specialists put the interval at 50,000-60,000 miles or 8 years, sooner for towing, tuned or hard-driven cars.

Always confirm against the vehicle handbook. Intervals vary by engine, and several manufacturers revised theirs after failures in service.

Repair costs are typical UK ranges, not quotes. Actual cost depends on condition and garage.Data last verified: September 2026

Audi Q7 buying questions

Which Audi Q7 years should I avoid?

No Audi Q7 year is a write-off, but the 4L (2006 to 2015) carries the most serious faults: engine and suspension. Year matters less than whether the specific car has had the known fixes, so check the history for them.

What should I check when viewing a used Audi Q7?

Ask the seller about the engine and suspension faults on this page and whether they have been fixed, with invoices. On the test drive watch for loud metallic slapping/rattling from the back of the engine on cold start and car sitting unevenly or very low when parked overnight. Read the MOT history for repeat advisories, then paste the advert into the free check, which reads it against its known faults before you travel. Check a Audi Q7 advert →

Are there any recalls on the Audi Q7?

The DVSA lists 15 safety recalls for the Audi Q7 issued between 2014 and 2025. The most recent, from October 2025, is "Software update for battery control unit". Recall work is done by the manufacturer, and GOV.UK says you will not usually have to pay for it. This list is by model, so it cannot tell you whether one particular car has had the work: the free GOV.UK MOT history check shows a recall status from the registration where the manufacturer shares it, and a franchised dealer can check the VIN.

What is the real MPG of an Audi Q7?

Owners report 31.5 mpg on average across the Audi Q7 engines with data, about 84% of the official combined figure. The gap between official and real-world economy varies a lot by engine, so the Real MPG page lists every engine and generation separately, from 310 owner submissions. Audi Q7 Real MPG by engine →

Looking at an Audi Q7 right now? Check the advert before you go and see it.

Where this Audi Q7 fault data comes from

If you used to check the Honest John “Good & Bad” section before the site closed in 2026, this page is where that information now lives. We rebuilt the Audi Q7 owner-report history from the archived Honest John dataset, added our own research, specialist and owner-club sources and DVSA recall data, and we keep it free. Each fault above is badged with its source. The same data feeds our free advert check, which reads a listing against every known fault for the exact engine and year.

CarAdCheck is not affiliated with Honest John or Volkswagen Financial Services. What happened to Honest John, and where each feature lives now.

Before you go and see it

Knowing what a Audi Q7 goes wrong with is half of it. The rest is reading the advert and checking the car's history before you hand any money over.

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