Buying guide

Buying a used Audi A4: what to check before you hand over cash

A checklist for inspecting a used Audi A4. Engine, gearbox, electrics, paperwork, and what a Honest Car Check report tells you.

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

Audi A4
Image via Wikipedia, CC-licensed.

TL;DR

Before buying a used Audi A4, conduct a thorough inspection focusing on paperwork, bodywork, engine performance, gearbox functionality, electrical systems, and MOT history. Be cautious of models from 2009 to 2016 due to reported DSG gearbox and oil consumption issues.

Paperwork

Start by checking the V5C document. Ensure the details match the seller’s ID and the vehicle itself. A complete service history is essential, including stamps from authorised dealers and receipts for any major work done.

Bodywork

Inspect the bodywork for any signs of damage or rust. Pay attention to the wheel arches, sills, and undercarriage. Look for mismatched paint, as this could indicate previous accidents. Ensure all doors and the boot open and close smoothly.

Engine Cold-Start

When starting the engine cold, listen for any unusual noises. A rough start or excessive smoke can indicate underlying issues. Check for warning lights on the dashboard. Let the engine idle for a few minutes and observe its behaviour.

Test Drive Checklist

During a test drive, focus on the vehicle’s acceleration and braking. The Audi A4 should respond smoothly without hesitation. Test the steering for any vibrations or pulling to one side. Listen for any strange noises from the suspension or engine.

Gearbox

If the model has a DSG gearbox, be aware of potential faults. Ensure smooth gear changes without jerking or delays. Test both manual and automatic modes if applicable. A rough or hesitant shift could indicate a problem.

Electrics

Check all electrical components, including lights, windows, and the infotainment system. Ensure that the air conditioning operates correctly. Faulty electrics can be a common issue in older models, so thorough testing is crucial.

MOT History

Review the MOT history to identify any recurring issues. Look for any advisories or failures that could indicate ongoing problems. A clean MOT history is a good sign of the vehicle’s condition.

Use Honest Car Check to verify mileage and MOT history. This report can help you uncover hidden issues and ensure you’re making a sound investment.

What people are asking

Is the Audi A4 a reliable car?

The Audi A4 generally has a good reputation for reliability, particularly in later models. However, some owners have reported issues with specific components, such as the DSG gearbox and engine oil consumption, which can affect overall reliability.

Are Audi A4s expensive to repair?

Repair costs for the Audi A4 can be higher than average, especially for complex components like the DSG gearbox and electrical systems. Routine maintenance is also essential to keep costs manageable, so it’s wise to consider the service history before purchasing.

What Audi A4 to stay away from?

Buyers are often advised to avoid models from 2009 to 2016 due to reported DSG gearbox issues. Additionally, certain engine variants, particularly those with high oil consumption, should be approached with caution.

Is a used Audi A4 worth buying?

Many buyers find the Audi A4 to be a worthwhile investment due to its blend of performance, comfort, and style. It is often praised for its driving experience and quality interior, making it a strong contender in the used car market.

What owners say

While many appreciate the driving experience and build quality, some express concerns about the long-term reliability of the DSG gearbox, particularly in models produced between 2009 and 2016. They recommend thorough checks on the gearbox before purchasing. When it comes to reliability, owners have mixed feelings.

Common faults reported by users include engine oil consumption, especially in the 2.0-litre TFSI petrol variants. Buyers in UK communities have flagged that this issue can lead to costly repairs if not addressed early. Regular oil level checks are advised to avoid running low.

This is an important factor to consider for potential buyers. In terms of repair costs, discussions indicate that while the Audi A4 is a premium vehicle, maintenance can be expensive.

Value retention is another theme among owners. Many agree that the Audi A4 holds its value well compared to other vehicles in its class. However, those suggest that the initial purchase price may be higher, but the quality and performance justify the investment.

Finally, some owners recommend avoiding certain model years due to known issues. For instance, the 2013 model has been highlighted for its electrical faults, while the 2016 model is often praised for improvements in reliability. It’s crucial to research specific years and models to ensure a sound purchase.

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 should I check in the paperwork?

Verify the V5C document and ensure the service history is complete.

How do I check the engine's condition?

Start the engine cold and listen for any unusual noises or vibrations.

What should I look for during a test drive?

Check for smooth acceleration, braking, and listen for any strange sounds.

Are there common faults with the Audi A4?

Yes, issues with the DSG gearbox and electrical faults are reported.

How can I verify the mileage?

Use Honest Car Check to confirm the mileage and MOT history.

Is the Audi A4 a reliable car?

The Audi A4 generally has a good reputation for reliability, but some models have reported specific issues.

Are Audi A4s expensive to repair?

Repair costs can be higher than average, especially for complex components like the DSG gearbox.

What Audi A4 to stay away from?

Models from 2009-2016 with DSG gearbox issues are often advised against.

Is a used Audi A4 worth buying?

Many buyers find the Audi A4 to be a worthwhile investment due to its blend of performance, comfort, and style.

Sources