Common problems

Audi A4 common problems and reliability issues

Honest rundown of the most common Audi A4 faults, what to watch for, and how to keep one running well.

Updated 4th September 2026 DVSA data: Across 241,912 recorded MOT tests, 22.7% failed.

Audi A4
Image via Wikipedia, CC-licensed.

TL;DR

The Audi A4 is a popular choice, but it has its share of common problems. Key issues include engine oil leaks, transmission faults, and suspension wear, particularly in specific year ranges. Regular maintenance and careful ownership can help mitigate these concerns.

Engine Issues

The Audi A4 has experienced several engine-related problems, especially in the 2.0 TFSI models produced from 2008 to 2015. Owners have reported oil leaks, often stemming from the cam cover gasket and oil filter housing. Additionally, timing chain tensioner failures have been noted, which can lead to severe engine damage if not addressed promptly. Some owners have also flagged issues with high oil consumption, particularly in earlier 2.0-litre TFSI petrol units, which can lead to additional costs for oil top-ups and repairs.

Transmission Problems

The multitronic CVT found in models from 2005 to 2010 is known for its issues. Drivers have reported a juddering sensation during acceleration and even complete transmission failure in some cases. Regular fluid changes can help mitigate problems, but potential buyers should be cautious of this known fault. Some owners have also mentioned that the cost of transmission repairs can be quite high, adding to the overall expense of ownership.

Suspension Wear

Suspension issues are common in the B8 generation of the Audi A4, spanning from 2008 to 2016. The front suspension components, including control arms, can wear out prematurely, leading to knocking noises and uneven tyre wear. Regular inspections and timely replacements are crucial to maintaining ride quality. Many owners recommend having the suspension checked during routine services to catch any potential issues early.

Electrical Problems

Electrics can also be a concern for Audi A4 owners. Models from 2005 to 2012 have reported issues with dashboard warning lights and electronic control units. Faulty sensors can trigger warning lights, and in some cases, owners have experienced problems with the central locking system. These electrical faults can be frustrating, as they often require diagnostic tools to pinpoint the issue accurately, which can add to repair costs.

Recalls and Safety

The Audi A4 has had several recalls over the years. Notably, models from 2013 to 2016 were recalled for potential issues with the airbag system. Always check the vehicle history for any outstanding recalls before purchasing. Additionally, staying informed about recalls can help ensure the safety and reliability of your vehicle.

What people are asking

Is the Audi A4 a reliable car?

The Audi A4 has a mixed reputation for reliability. While many owners report satisfactory experiences, particularly with newer models, some older versions have been associated with various mechanical issues. Regular maintenance and careful ownership can significantly improve reliability.

Are Audi A4s expensive to repair?

Repair costs for the Audi A4 can be on the higher side compared to other brands. Owners have noted that parts and labour can be costly, especially for transmission and engine repairs. It’s advisable to budget for potential repairs when considering an Audi A4.

What Audi A4 to stay away from?

Many buyers recommend avoiding the 2005 to 2010 models, particularly those with the multitronic CVT transmission, due to frequent transmission issues. Additionally, certain 2.0 TFSI models from 2008 to 2015 are known for oil leaks and timing chain problems, making them less desirable.

Is a used Audi A4 worth buying?

A used Audi A4 can be a worthwhile investment if you find a well-maintained model with a complete service history. However, it’s essential to be aware of common issues and potential repair costs. Conducting a thorough inspection and obtaining a vehicle history report can help ensure a good purchase.

What owners say

Many Audi A4 owners share their experiences regarding reliability and common faults on various forums. Users often highlight the driving experience as a significant positive, noting the smooth handling and quality interior.

While some owners appreciate the German engineering and overall performance, they acknowledge that Japanese cars may offer better long-term reliability and lower running costs. This sentiment is echoed in discussions about the 2.0 TFSI models, where owners mention the high oil consumption and timing chain issues as concerns. Reliability is a common topic of discussion among users.

Some users recommend opting for manual or automatic versions instead, which tend to have fewer reported issues. Transmission problems are frequently mentioned by owners, with many sharing experiences of juddering and eventual failure in the multitronic CVT.

Overall, while the Audi A4 is praised for its aesthetics and driving dynamics, potential buyers should be aware of the common pitfalls and consider their budget for repairs. Engaging with the community on forums can provide valuable insights into ownership experiences and help inform purchasing decisions.

Audi A4 recall record

33 recalls have been issued for the Audi A4, between 1997 and 2025.

  1. Stop-drive TAKATA PSAN

    R/2025/387

    Issued 8 August 2025

    Urgent Safety Warning – Do Not Drive Your Vehicle Affected vehicles were originally allocated to or used for an extended period of time in a region with a climate zone considered to as HIGH RISK. Certain front airbags contain an ageing inflator propellant that may explode when deployed due to long-term exposure to heat and humidity. If the airbag inflator explodes metal fragments may be ejected causing life-threatening or fatal injuries to anyone in the vehicle.

    Remedy:Affected airbags will be be replaced. You can contact Audi's dedicated Takata Stop Drive helpline at 0113 526 9646 (MONDAY to FRIDAY 9:00AM to 5:00PM.

    Affects cars built Mar 2005 to Mar 2008

  2. Replacing TAKATA driver airbag

    R/2024/312

    Issued 13 August 2024

    On imported Audi vehicles previously used in a warm climate zone and fitted with TAKATA driver airbag manufactured within a specific period it is possible that the gas generator housing may cause small metal parts to become dislodged from the housing and potentially injure the driver or a passenger.

    Remedy:As a precautionary safety measure it is necessary to replace the gas generator in the airbag unit on the driver side of the vehicle.

    Affects cars built Feb 2006 to Jan 2009

  3. Replacing Takata passenger airbag

    R/2024/158

    Issued 4 April 2024

    On affected vehicles the passenger airbag may in extremely rare cases be overloaded and even burst when the passenger airbag is triggered. If this were to happen small metal parts could become dislodged from the housing and potentially cause life-threatening injury to a vehicle occupant.

    Remedy:For safety reasons it is necessary to check the passenger airbag and if required to replace the airbag module.

    Affects cars built Oct 2004 to Apr 2008

  4. If a front airbag is deployed it is possible that the gas generator housing in which the propellant is generated may burst on vehicles manufactured within a limited period.

    R/2023/053

    Issued 1 February 2023

    If a front airbag is deployed it is possible that the gas generator housing in which the propellant is generated may burst on vehicles manufactured within a limited period.

    Remedy:As a precautionary safety measure it is necessary to replace the airbag unit on the passenger side.

    Affects cars built Jul 2006 to Aug 2006

29 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 A4 MOT record

From 241,912 recorded MOT tests, 22.7% failed.

MOT pass and failure rates by year of first registration
RegisteredTestsFailedMedian mileage
202333110.6%25,010 mi
20226,57510.5%29,162 mi
20216,97510.7%39,770 mi
20208,32210.9%45,443 mi
201912,96414.4%53,553 mi
201813,39818.2%62,132 mi
201720,91418.7%74,948 mi
201621,57218.7%85,997 mi

Most common reasons for failure

  1. A suspension pin, bush or joint excessively worn33.3%
  2. Tyre tread depth not in accordance with the requirements29.2%
  3. A tyre seriously damaged14.2%
  4. A spring or spring component fractured or seriously weakened13.9%
  5. a brake lining or pad worn below 1.5mm9.4%

Figures cover every Audi A4 tested in the DVSA dataset, not this specific car. Check a registration for the actual history of one vehicle.

Frequently asked questions

What are common engine problems with the Audi A4?

Common issues include oil leaks, particularly in models from 2008 to 2015, and timing chain problems in the 2.0 TFSI engines.

Are there transmission issues reported in the Audi A4?

Some models, especially the 2005 to 2010 versions, have experienced problems with the multitronic CVT, leading to juddering and failure.

What suspension issues should I be aware of?

The front suspension can wear out early, particularly in the B8 generation (2008-2016), leading to knocking noises and uneven tyre wear.

How reliable is the Audi A4 overall?

Overall, the Audi A4 has a mixed reliability record, with newer models generally performing better than older ones.

Sources