The standard seven-speed manual Targa 4 (automatic PDK gearbox figures) can conjure up 29.7mpg (32.5mpg) on average in ideal conditions while emissions pour out at 223g/km of CO2 (204g/km).

The more powerful Targa 4S is a thirstier beast knocking back a gallon of petrol every 28.2 (30.7) miles on average, and emits 237g/km of CO2 (214).

While the Targa 4S is significantly more powerful, it really doesn’t emit much more CO2 or drink much more petrol. Given the vast majority of customers will end up paying a six-figured sum for a Targa by the time options are specified, running costs are not going to be a major concern.

In terms of most family cars Porsche 911 Targa emissions are pretty poor, but compared to other supercars with comparable performance it is pretty impressive. Best for emissions is the standard Targa 4 with the automatic gearbox, which emits just 204g/km of CO2 – that’s band K two bands below the highest one.

It’s a car commonly referred to as the everyday supercar and that also means that Porsche 911 Targa reliability is pretty impressive.

The Targa uses all the same running gear, engines and four-wheel drive system as the standard 911 coupe Carrera 4.

The only thing to keep an eye on is to make sure the roof mechanism operates as it should and the fabric part of the roof is in good condition. However, both the Targa and convertible have enjoyed good reliability records so there should be little to worry you here.