Used BMW 6-Series M6 Convertible (2012 - 2018) Costs

Review by Tim Bowdler on
Last Updated: 27 Aug 2015
The BMW M6 Convertible represents something of a problem for true-blue driving enthusiasts. Awesomely fast, great handling, a fantastic noise and uncompromising looks but… it’s still a convertible.

2 out of 5

Running costs

BMW has gone to great lengths to cut emissions and fuel consumption. When you consider that the previous model’s claimed average fuel consumption was around 19mpg, this version’s official average of 27.4mpg is pretty impressive. In real-world driving though, you’ll be lucky to get 20mpg. BMW M6 Convertible running costs won’t be cheap right across the board: BMW’s servicing costs among the highest and it’ll be expensive to maintain as well.

Tyres will be pricey and the high CO2 emissions make it expensive to tax.

Summary Running Costs

Servicing period

According to the on-board computer. A transferable M6 service package covering servicing for five years is available for around £1,000.


Three years/unlimited mileage

Road tax (12 months)

£490.00 - £585.00

Vehicle excise duty (VED) varies according to the CO2 emissions and the fuel type of the vehicle. For cars registered after March 1st 2001 VED or road tax is based on the car's CO2 emissions. For cars registered before March 1st 2001 it is based on engine size.

Full running costs data

2.5 out of 5

Green credentials

  • A
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  • F
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CO2 emission figure (g/km)

Fuel economy rating

The arrows indicate the best and worst CO2 bands for this model.

Emissions summary

You’ll not be doing icebergs in the Arctic Circle much good if you buy one of these because official BMW M6 Convertible emissions make unpleasant reading. The previous M6 droptop’s CO2 emissions were a planet-melting 342g/km and this car’s 232g/km do represent a massive improvement. Still, this is not a car to take to the Greenpeace annual get-together.

Find the exact engine and CO2