There is a newer version of this car Read the latest BMW 3-Series Convertible (07-13) review here

BMW 3-Series Convertible running costs and reliability

2000 - 2006 (change model)

Running costs rating: 3.5 out of 53.5

Written by Parkers Published: 6 June 2019 Updated: 6 June 2019

Miles per pound (mpp)

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

What is miles per pound?

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 26 - 44 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.

View mpg & specs for any version

Specify a small engine or a diesel and drive carefully and you’ll get plenty of MPG. Residuals are good and servicing is variable with use. Belt about in a big petrol unit and you’ll guzzle juice and scoff tyres.

3-Series performs fairly badly on the eco front. With an average of 219 g/km CO2 across the model line-up, its emissions are a touch high for a medium-sized convertible. The range is not very frugal, averaging 32 mpg.

Excellent reliability in the main – occasional niggles but unlikely to be anything that won’t be quickly sorted by the dealer.