Common problems

Audi A8 common problems and reliability issues

Honest rundown of the most common Audi A8 faults, what to watch for, and how to keep one running well.

Updated 4th September 2026 DVSA data: Across 10,012 recorded MOT tests, 9.6% failed.

Audi A8
Image via Wikipedia, CC-licensed.

The Audi A8 is a luxury saloon known for its performance and comfort, but it is not without its issues. Common problems include electrical faults, air suspension failures, and engine issues.

Electrical System Issues

One of the most frequently reported problems with the Audi A8 involves its electrical system. Owners have noted issues with the infotainment system, dashboard displays, and various electronic controls. These faults can lead to a frustrating driving experience and may require costly repairs.

The complexity of the A8’s electrical architecture can contribute to these problems. Wiring harnesses may suffer from wear and tear, leading to intermittent faults. Additionally, software glitches can affect the operation of systems like adaptive cruise control and parking sensors. Regular software updates from Audi can mitigate some of these issues, but they do not eliminate them entirely.

Air Suspension Failures

The A8 is equipped with an air suspension system designed to provide a smooth ride. However, this system can be prone to failures, particularly in older models. Owners have reported issues with air leaks, which can cause the vehicle to sag or lead to uneven ride height.

Air suspension components, such as the compressor and air bags, can wear out over time. Regular maintenance is essential to prolong the lifespan of these parts. If the air suspension fails, it can lead to a significant drop in ride quality and may require expensive repairs to restore functionality.

Engine Problems

Engine issues are another concern for Audi A8 owners. Some models have been reported to experience oil leaks, particularly around the valve cover gaskets and oil pan. These leaks can lead to low oil levels, which may cause engine damage if not addressed promptly.

Additionally, some A8s have experienced problems with the timing chain or belt. A failing timing chain can lead to catastrophic engine failure, making it crucial for owners to keep up with regular maintenance and inspections. Checking the engine oil regularly and addressing any leaks early can help prevent more severe issues down the line.

Transmission Concerns

Transmission problems can also arise in the Audi A8, particularly in models equipped with the automatic gearbox. Owners have reported issues such as rough shifting, slipping gears, and delayed engagement. These symptoms can indicate a need for transmission fluid changes or more serious internal problems.

The complexity of the A8’s transmission system means that repairs can be costly. Regular maintenance, including fluid changes at recommended intervals, can help prevent some of these issues. However, if problems do occur, it is advisable to seek professional assistance to avoid further damage.

Cooling System Failures

The cooling system in the Audi A8 is essential for maintaining optimal engine temperatures. However, some owners have reported issues with coolant leaks and overheating. Common culprits include failing water pumps, radiator issues, and hose leaks.

If the cooling system fails, it can lead to severe engine damage. Regularly checking coolant levels and inspecting hoses for wear can help catch potential problems early. It is also advisable to replace the coolant at recommended intervals to ensure the system functions correctly.

Brake System Problems

Finally, the brake system in the Audi A8 can present issues, particularly with the electronic parking brake. Some owners have reported that the parking brake can become stuck or fail to engage properly. This can lead to safety concerns and may require recalibration or replacement of components.

Additionally, wear on brake pads and discs is common, especially in high-performance models. Regular inspections and timely replacements are essential to maintain braking performance. Addressing any warning lights or unusual noises promptly can help avoid more significant problems down the line.

Understanding these common problems with the Audi A8 can help potential buyers make informed decisions. Regular maintenance and timely repairs are crucial for keeping this luxury saloon performing at its best.

Audi A8 recall record

24 recalls have been issued for the Audi A8, between 1996 and 2025.

  1. Software update for battery control unit

    R/2025/441

    Issued 10 October 2025

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

    Remedy: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.

    Affects cars built Feb 2022 to Dec 2023

  2. Replacing front suspension link

    R/2024/310

    Issued 19 July 2024

    A suspension link on the front axle that has invisible cracks may have been fitted to your vehicle. This possible damage means the service life of the suspension link can no longer be guaranteed and the component may fail. A failure particularly at higher speeds may result in vehicle behaviour that is difficult to control.

    Remedy:For safety reasons it is necessary to replace the front upper left suspension link

    Affects cars built May 2024 to Jun 2024

  3. THE MESH SIZE OF THE OIL STRAINER IN THE OIL SUPPLY FOR BOTH TURBOCHARGERS IS TOO SMALL

    R/2022/132

    Issued 4 May 2022

    The mesh size of the oil strainer in the oil supply for both turbochargers is too small.

    Remedy:The oil strainer will be replaced with a revised version with a larger mesh size.

    Affects cars built May 2012 to Mar 2017

  4. 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

    R/2022/036

    Issued 14 February 2022

    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.

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

    Affects cars built Nov 2019 to Feb 2021

20 older recalls not shown.

A recall applies to a build range, not to every car of this model. Check a registration to see whether one specific vehicle has an outstanding recall.

Audi A8 MOT record

From 10,012 recorded MOT tests, 9.6% failed.

MOT pass and failure rates by year of first registration
RegisteredTestsFailedMedian mileage
20212462.4%43,930 mi
20203876.7%48,655 mi
20197145.3%55,294 mi
20189487.2%62,937 mi
20176526.1%71,460 mi
20168798.0%78,459 mi
20159186.2%91,050 mi
20148417.6%101,544 mi

Most common reasons for failure

  1. A suspension pin, bush or joint excessively worn34.0%
  2. Tyre tread depth not in accordance with the requirements30.1%
  3. A tyre seriously damaged17.7%
  4. Brake disc or drum excessively weakened, insecure or fractured10.1%
  5. a brake lining or pad worn below 1.5mm8.1%

Figures cover every Audi A8 tested in the DVSA dataset, not this specific car. Check a registration for the actual history of one vehicle.

Audi A8 official figures

Median across 4 variants on sale, diesel electric, petrol electric.

Combined economy
33.9 mpg
WLTP median across variants
CO2 emissions
204 g/km
Sets the first-year tax rate

Official figures for new cars. Real economy varies with driving, load and conditions.

Frequently asked questions

What are the most common issues with the Audi A8?

Common issues with the Audi A8 include electrical problems, air suspension failures, and oil leaks. These can affect the vehicle's performance and reliability.

How reliable is the Audi A8?

The Audi A8 is generally considered a reliable luxury vehicle, but like any car, it can experience issues. Regular maintenance and servicing can help mitigate potential problems.

Are there any known problems with the Audi A8's air suspension?

Yes, the air suspension system in the Audi A8 can be prone to failure, leading to a rough ride or uneven height. It's important to have it checked regularly to avoid costly repairs.

What should I look for when buying a used Audi A8?

When buying a used Audi A8, check for service history, signs of oil leaks, and the condition of the air suspension. A thorough vehicle inspection is also recommended.

Is the Audi A8 expensive to maintain?

Maintenance costs for the Audi A8 can be higher than average due to its luxury status and complex systems. It's advisable to budget for regular servicing and potential repairs.

How can I prevent common problems with my Audi A8?

To prevent common problems, ensure regular servicing, address any warning lights promptly, and keep an eye on fluid levels. Following the manufacturer's maintenance schedule is key.

What are the signs of electrical problems in the Audi A8?

Signs of electrical problems in the Audi A8 may include malfunctioning dashboard lights, issues with the infotainment system, or problems with power windows. If you notice these, have the vehicle inspected.

Are there any recalls for the Audi A8?

Recalls are issued against individual vehicles rather than a model as a whole, so a model-level yes or no would be guesswork. Enter the registration on Honest Car Check and we check the DVSA record for that specific car. Where DVSA holds no status, confirm it with a franchised dealer using the VIN.

Sources