Parkers overall rating: 4.3 out of 5 4.3

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

Petrol engines 3.0 - 3.7 mpp
Plug-in hybrid petrol engines 10.5 - 13.4 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.
Based on "Weighted" mpg; figures depend on the proportion of miles driven in pure electric mode and may vary widely

Fuel economy

Petrol engines 20.0 - 24.4 mpg
Plug-in hybrid petrol engines 68.9 - 88.3 mpg
  • All models will be quite costly to run
  • E-Hybrid your best option all-round if MPG bothers you
  • Servicing and maintenance won’t be cheap

How much is it going to cost to run?

If you’re buying a Cayenne Coupe with an eye on running costs, head straight for the plug-in hybrid E-Hybrid as that will officially do the most MPG thanks to an electric range of up to 22 miles. However, you’ll need to be driving almost everywhere in electric mode to get near the claimed figure though, meaning you’ll need to be charging it at every opportunity. Otherwise it’ll be far closer to 20-30mpg.

The Turbo S E-Hybrid is similarly impressive because of a 19-mile EV range, but as soon as you let that petrol engine start up, you’ll be achieving far less.

For the rest of the range, the V6 engines found in the standard model and the S are a little bit more economical than the V8s. But there's not much in it.

MPG and CO2

Petrol

  • 3.0-litre V6: 22.6-24.4mpg, 263-283g/km CO2
  • 3.0-litre V6 (S): 21.9-23.5mpg, 271-292g/km CO2
  • 4.0-litre V8 (GTS): 20.2-21.2mpg, 302g/km CO2
  • 4.0-litre V8 (Turbo): 20.0-20.9mpg, 307g/km CO2
  • 4.0-litre V8 (Turbo GT): 20.0mpg, 319g/km CO2

Plug-in hybrid

  • 3.0-litre V6 plug-in (E-Hybrid): 76.3-88.3mpg, 73-85g/km CO2
  • 4.0-litre V8 plug-in (Turbo S E-Hybrid): 68.9-74.3mpg, 87g/km CO2

How reliable is it?

  • Porsche has a good reputation
  • Three-year warranty included
  • Looks and feels very well built

Porsche has forged itself an enviable reputation as a car firm that builds high-quality cars that can be depended on, with great attention to detail.

This version of the Cayenne has been the subject of four recalls so far, two minor issues regarding software for the digital dials, one for the fuel filler, and one to do with screws securing the steering column. If you’re looking at a used model, any remedial work will have been carried out. Plus there’s a three-year warranty to keep your mind at ease. 

>> Check out the Porsche Cayenne's official recall history

Ongoing running costs

Road tax (12 months) £480 - £490
Insurance group 45 - 50
How much is it to insure?