This car has been superseded by a newer model, click here to go to the latest Porsche 911 Cabriolet review.

Parkers overall rating: 5 out of 5 5.0

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 20 - 28 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 latest so-called 997 generation 911 holds its value better than most performance cars. The Cabriolet doesn’t retain its value quite as well as the Coupe as it carries a price premium that levels out over time, but it’s still pretty good. Servicing is expensive, but intervals have increased from 12,000 to 20,000 miles over the last generation model.

By family car standards the 911 Cabriolet performs poorly on the environmental front with average emissions of 305g/km of CO2. However the company has worked to reduce this and facelifted Carrera and Carrera S models from 2008 have lower average emissions of 242g/km of CO2 . Considering the performance on offer fuel economy is more than acceptable – the 3.6-litre Carrera returns 29mpg.

Not bad for a car with 345bhp. 911 is a polluting model. With an average of 279 g/km CO2 across the line-up, its emissions are high for a sports cabriolet. It’s worth noting that the line-up does not feature any diesel models, which typically produce less carbon dioxide than petrol engines with similar power outputs. The range is disappointingly thirsty, averaging 24 mpg.

One of the biggest factors that keeps owners coming back to Porsche is the largely hand-built construction process for the 911 which creates a product that is exceptionally well engineered and reliable.

Ongoing running costs

Road tax (12 months) £360 - £630
See tax rates for all versions
Insurance group 50
How much is it to insure?