Parkers overall rating: 4.5 out of 5 4.5

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

Petrol engines 3.3 - 3.5 mpp
Low figures relate to the least economical version; high to the most economical. Based on WLTP combined fuel economy for versions of this car made since September 2017 only, and typical current fuel or electricity costs.

Fuel economy

Petrol engines 21.9 - 23.3 mpg
  • Expensive asking price = expensive running costs
  • Thirst for fuel almost matched by thirst for tyres

It probably won’t surprise you to learn that the AMG GT Roadster is not going to be a cheap car to run.

The official fuel economy is 30.0mpg for the GT Roadster, dropping to 24.8mpg for the GT C Roadster; in reality if you can get either of them to top 20mpg you’ve got the restraint of a saint – these are indulgent cars that encourage you to indulge. Repeatedly.

AMG has made some effort to improve efficiency – which isn’t helped by the less aerodynamic convertible shape – by fitting the active aero shutters from the GT R coupe. These blank off the radiator’s cooling grilles to reduce drag whenever engine temperatures allow.

As with any high-performance vehicle, insurance, tax, servicing and maintenance costs are all going to be above average.

Not a car for the environmentally conscious. The GT Roadster emits 219g/km CO2 while the GT C Roadster emits 259g/km.

Although AMG does periodically experiment with electric drivetrains and hybrids, nothing has been confirmed for this model so far.

At the time of writing it’s too early to say how reliable these cars will prove.

On the one hand, they are an expensive luxury product, which implies a certain level of quality.

On the other, they are complex performance machines that are likely to be used hard by their owners. Regular, specialist maintenance will be essential to ensure longevity.

There has been one official recall for the AMG GT Coupe, which is closely related to the GT Roadster. This related to an issue with the driveshaft coupling. Only a small number of vehicles were involved, and we would not expect this problem to reoccur.

Ongoing running costs

Road tax (12 months) £340 - £600
See tax rates for all versions
Insurance group 50
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