Best and worst used sports cars for reliabilityWe reveal the most reliable used sports car

04 February 2014


With complex electric folding roofs, convertibles can cost a huge amount to keep on the road. And large-engined sports coupes are often not far behind. However, choose wisely and you won't pay much more in repair bills than for a reliable medium car.

One of the least reliable convertibles has a shocking breakdown rate of 27% and average repair bills of over £230. At the other end of the table, however, average annual repair bills can be as low as £31 and breakdown rates down to just 4%. So, owning a sports car doesn’t have to leave you out of pocket. 

The Which? Car Survey runs every year, letting you discover, straight from owners, which cars you can rely on and which are likely to leave you facing enormous repair bills. Join Which? for £1 and gain instant access to all of our survey results.

Tell us how reliable your car is by taking part in the 2014 Which? Car Survey.

Most reliable used sports car

Topping the sports car table are the BMW 1 Series Coupe and Convertible (2008-). These models pleased owners with low average annual repair bills of just £31 and strong reliability score of 92%. Owners did report some issues with their cars, but most of these were minor, such as faulty electric windows, lights and windscreen wipers.

Thanks to its sound reliability, the BMW 1 Series is a solid 24% ahead of the least reliable sports car, so while purchase prices may be expensive, running costs should be much more reasonable.

Find out the five highest rated used sports cars for reliability

audi a4 cabriolet 1

Least reliable used sports car

Sitting right at the bottom of the used sports car table is the Audi A4 Cabriolet (2002-2008). Despite its pretty looks, this car put in a very ugly performance in the reliability stakes with an abysmal breakdown rate of 27%. 

Repair bills are equally painful, averaging out at £236 per year. Owners complained of issues with the battery, electrics, the exhaust system and the air conditioning. 

Find out the five lowest rated sports cars for reliability

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