Parkers overall rating: 4.5 out of 5 4.5

Miles per pound (mpp) Miles per pound (mpp)

Reliable fuel consumption data for comparison purposes is not available for this model.

Fuel economy

A more stringent standard for fuel economy (WLTP) was introduced from September 2017, and this model was not required to undergo that test. Its fuel economy measured under the previous test system was 29 - 55 mpg. However these figures are less likely to be achievable in real world driving and so should never be compared to another car's mpg which was measured under the newer, more realistic WLTP system.

The prestige of the BMW badge and quality of the product means that the 3 Series Convertible usually has some of the best residuals around. This should be further enhanced with the metal folding roof and sophisticated equipment (such as heat-reflective seats) on this latest car. Insurance and parts and servicing are expensive, but in line with other cars of this kind while the frugal diesels mean running one needn’t be an expensive experience.

The 3 Series Convertible performs reasonably on the eco front and by far the best model is the 320d – this emits 140g/km of CO2 and is capable of 53mpg. Even the top of the range 335i isn’t too bad – averaging 30mpg and emitting 226g/km of CO2, which is impressive considering it’s superb performance.

BMW is renowned for its quality, and this generation of 3 Series Convertible is no exception. For much of its life it proved to be exceptionally reliable with no major problems. The Convertible feels precisely built and there’s good attention to detail throughout the car.

BMW 3 Series Convertible recalls

BMW announced in May 2018 that various petrol- and diesel-engined 3 Series Coupe models would be subjected to a recall relating to an engine cut-out problem caused by an electrical fault.

If a used 3 Series Convertible built between March 2007 and August 2011 is on your shortlist, then it’s important to verify with a BMW dealer that the remedial work has been undertaken.

Ongoing running costs

Road tax (12 months) £165 - £615
See tax rates for all versions
Insurance group 30 - 43
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