Compare Audi A4 ECU repair quotes from specialist garages

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If you're looking to book any repair work for an Audi A4, you can easily compare quotes from our network of thousands of garages and mechanics, find the best price and instantly book online.

Since it was founded in 1909, Audi has been at the forefront of automotive innovation. It was the first to conduct crash tests, one of the first to use a dual-clutch gearbox, and in 1921, became the first German manufacturer to make a production car, the Audi Type K, with left-hand drive. Impressively, Audi is also the most successful carmaker in the history of the World Car Awards, winning 11 titles since 2005 and five World Performance Car Awards as of 2022. Find out whether Audis are expensive to repair in this guide or take a look at how their maintenance costs compare with SEAT and Skoda.

The Audi A4 has been a popular staple of British roads since 1994 and is undoubtedly one of the best executive cars available today. It comes in three configurations - Saloon, Avant and RS 4 Avant - with a top speed of up to 149.8 mph. A strong rivalry has existed between the BMW 3 Series, Mercedes C Class and Audi A4 for years - find out which brand is the cheapest to maintain here. At the 2016 Fleet News Awards, the A4 was named 'Best Premium Car', and it was also named 'Car of the Year' at the WhatCar? Awards. This guide discusses common problems with the A4.

ECU stands for engine control unit, sometimes referred to as the engine control module (ECM). This component ensures your car's engine runs smoothly by, for example, determining the amount of fuel that goes into the cylinders. You can find out more about how it works here.Signs of a faulty ECU include misfires, the check engine light, starting problems, and engine surges or lags. ECU testing and repairs can help you work out the cause of the problem, such as faulty wiring or a bad sensor.ECU testing uses a diagnostic tool known as an OBD scanner, which extracts information from the car's computer and allows the technician to check fault codes.Can an ECU be repaired? Most of the time, the answer is yes; the ECU can be reprogrammed or repaired. The same applies to water damaged ECUs, as long as the damage is minimal. Some technicians may offer mobile ECU repairs at a location that's convenient for you.