Audi A4 B9/B9.5 Buyers guide (2015-2024) Avoid known problems on Audi A4 Avant / S4

Audi A4 B9 and B9.5 including the Audi S4 (2015-2024) Buyers guide for common problems with the 1.4-litre/2.0-litre and 3.0-litre models. Covering all engines including the 1.4TFSI, 2.0TFSI, 3.0 V6 TFSI S4, 2.0TDI, and 3.0TDI that was also fitted to the European S4 TDI. Avoid buying a cheap broken B9 Audi A4 with software issues and problems if you have already purchased one then you can use this as an owner's guide on what to look out for. Avoid the mistake of buying the cheapest broken A4 or S4 either in the early B9 trim or later B9.5 facelift. You may be attempting to fix the Audi A4 with parts for known weak points with our review. This buyer's guide covers the Audi A4 and S4 from 2015 Audi A4, 2016 Audi A4, 2017 Audi A4, 2018 Audi A4, 2019 Audi A4, 2020 Audi A4, 2021 Audi A4, 2022 Audi A4, 2023 Audi A4, and 2024 Audi A4 in all trims including the 2023 Audi A4 Final edition. Audi A4 owners may also find our guide useful and informative as we list common faults and problems to keep a look out for.

The B9/B9.5 Audi A4 is a reliable vehicle although some known faults and problems remain and should be avoided when looking for one to buy.

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Legal and disclaimer - Any content not originally created by The Miles Driven remains the property of the original owner and is editorialised for media reporting. All content is used within the confines of media reporting/editorial use and is transformative in nature to inform others with new information and content about cars and vehicles. We use no more of the original content than necessary in alignment with U.S copyright law for fair use and U.K fair dealing. We accept no liability for the purchase of vehicles using our guide and suggest thorough due diligence by individual professional inspections before making a buying decision.

The Audi S4 with a V6 TFSI and V6 TDI engine is already a modern classic and with the chance of replacement now very unlikely to ever appear again this is almost certain to become a future classic.