The RS4 isn’t a car you buy if you have one eye on running costs. As well as high fuel bills, insurance, servicing and any parts will all be expensive. When new it was competitively priced alongside the M3 with a price tag of more than £50,000. But it does come loaded with kit and of course, mind-blowing performance.

The RS4’s 4.2-litre petrol engine returns just 20mpg on average, so it’s no surprise that the model performs poorly on the eco front. It emits 329g/km CO2 which is very high compared to an average family car, but fairly standard compared to similar performance models. The only saving grace is that owners of these sorts of cars tend to do fewer miles per year than those that own average family cars.

The Audi A4 is generally a very reliable car. This one has a highly stressed engine (the rev limiter cuts in at 8250rpm) and must be maintained according to schedule to ensure it continues to perform as it should. The FSI engine is chain driven so won’t need cambelts.