Audi A6 2014 to 2019: common problems and what to know
What goes wrong on the 2014 to 2019 Audi A6, what owners report and what to check before you buy one.

TL;DR
The 2014 to 2019 Audi A6 is a premium saloon that combines luxury and performance, but it has notable issues. Common problems include electrical system failures, excessive oil consumption, and suspension wear. A thorough inspection is recommended before purchasing.
Key facts callout
- Year Range: 2014 to 2019
- Common Problems: Electrical issues, oil consumption, suspension wear
- Reliability: Generally good, but varies by year
- Price Range: Used models typically range from £15,000 to £35,000
Engine and gearbox
The Audi A6 from 2014 to 2019 features various engines, including petrol and diesel options. The 2.0 TDI diesel is favoured for its efficiency, while the 3.0 TDI offers more power. However, excessive oil consumption has been reported, especially in the 2.0 TDI models, potentially leading to costly repairs if not monitored.
Transmission issues are also common, particularly with the dual-clutch S tronic gearbox. Drivers have noted rough shifting or failure to engage gears. Regular maintenance is crucial to ensure the gearbox operates smoothly.
Electrics and electronics
Electrical problems are prevalent among the 2014 to 2019 A6 models. The 2019 variant has been particularly noted for complete electrical system shutdowns while driving, posing safety risks. Other issues include faulty sensors, such as brake sensors that may issue false warnings.
Infotainment system malfunctions are also reported, with some owners experiencing freezing or unresponsiveness. If considering a used A6, verify that all electronic systems are functioning properly before completing the purchase.
Body and suspension
The A6’s body is generally well-constructed, but there are areas to monitor. Some owners report water ingress in the rear lights, which can lead to electrical problems. Checking for moisture or corrosion in these areas is advisable.
Suspension wear is another frequent issue, especially in models driven on rough roads. Front suspension components may wear out prematurely, affecting ride comfort and handling. Regular inspections and timely replacements can help address these concerns.
What people are asking
What year of Audi A6 is most reliable? The 2014 Audi A6 is often regarded as one of the most reliable years in this generation.
What is the most common problem with the Audi A6? Common issues include electrical system failures and excessive oil consumption.
What are the basic issues with the 2014 Audi A6? The 2014 model may face oil consumption issues, electrical glitches, and suspension wear.
What are the common problems with the 2019 A6? The 2019 A6 has been reported to experience electrical system failures, including complete shutdowns and sensor malfunctions.
What owners say
Owner feedback on forums and Reddit indicates that while the Audi A6 is luxurious and comfortable, many drivers express frustration over its reliability issues. Electrical problems are frequently highlighted, with several owners sharing experiences of breakdowns due to system failures. Concerns about excessive oil consumption also arise, impacting long-term ownership costs.
Conversely, many owners commend the A6 for its driving experience, comfort, and overall build quality. Those who maintain their vehicles regularly report fewer issues and a positive ownership experience.
Should you buy a 2014 to 2019 Audi A6?
Considering a used Audi A6 from 2014 to 2019 can be a good choice for those seeking luxury and performance. However, be mindful of common issues, particularly with electrical systems and oil consumption.
It is essential to have any potential purchase thoroughly inspected by a qualified mechanic, focusing on the engine and electrical systems. A well-maintained model with a solid service history could provide a satisfying ownership experience for years to come.
Frequently asked questions
What year of Audi A6 is most reliable?
The 2014 Audi A6 is often considered one of the most reliable years within this generation.
What is the most common problem with the Audi A6?
Common issues include electrical system failures and excessive oil consumption.
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Sources
DVSA MOT History, Honest John reliability index, Parkers owner reviews.