Least reliable sports cars

Sports cars, coupés and convertibles are often bought as toys to enjoy at the weekend. To help you pick a good one, we've rounded up the most and least dependable...

BMW i8 vs Porsche 911

The three least reliable sports cars, coupés and convertibles

3. Porsche 911 (2012-2020)

BMW i8 vs Porsche 911

What Car? reliability rating 90.1%

Although the 911 sits in the bottom three, its reliability rating is good. The fault rate is high at 36% of cars, but the main area of concern is the bodywork, accounting for 21% of problems. There were also a smaller number of issues with the engine electrics and the exhaust. Most cars could still be driven and two-thirds were back on the road in a week or less. More than 80% of repairs were done for free, but a small percentage of owners paid out £100 to £200.

Read our full Porsche 911 review >>

2. Porsche Panamera (2016-present)

Used Porsche Panamera 2016-present

What Car? reliability rating 84.5%

A disappointing 47% of Panameras suffered faults. Although almost half of the issues were to do with the bodywork, other problematic areas included the air-con, brakes, engine, exhaust and interior trim. All the faulty cars could still be driven, and the majority were fixed in less than a week. While most work was done under warranty, some owners paid between £50 and £1000.

Read our full Porsche Panamera review >>

1. Porsche Boxster/Cayman (2016-present)

2016 Porsche 718 Boxster

What Car? reliability rating 82.5%

Owners reported that 25% of their cars had suffered a fault, and a worrying 10% of those were with the engine and its electrical systems. We were also told about a smaller number of problems with non-engine electrics and interior trim. More than a third of cars were rendered undriveable and a quarter spent more than a week in the workshop being fixed. Only 63% of work was done for free, leaving owners to pick up bills ranging from £300 to more than £1500.

Owner’s view "The thing I like least about my car is its poor reliability. It's had two engine problems and it's only three years old"

Read our full 718 Porsche Boxster review >> or our full 718 Porsche Cayman review >>

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