Parkers overall rating: 4.2 out of 5 4.2

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

Petrol engines 2.7 - 3.3 mpp
Plug-in hybrid petrol engines 9.2 - 12.1 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 - 24.6 mpg
Plug-in hybrid petrol engines 68.9 - 91.1 mpg
  • Most economical is the E-Hybrid
  • Cayenne Turbo is thirsty
  • Should prove reliable

What are the running costs?

The Cayenne is a large, heavy and fast SUV from a luxury manufacturer. If you’re overly concerned by running costs, this isn’t the car for you. 

V6 engined Cayennes are broadly good for between 20-25mpg officially. Not brilliant or particularly frugal, but we found in day-to-day driving that this is almost achievable.

Fuel consumption for the plug-in Cayenne E-Hybrid is an impressive 91.1mpg. You’ll only get anywhere near that if you plug in regularly. If you’re on a motorway schlep without any charge in the battery, expect less than 30mpg.

The V8 whopper in the Turbo can only manage around 20mpg officially. This isn’t actually that far off the V6, and in sedate driving you may reach these figures. With that glorious soundtrack and power on offer though, we suspect most people won’t regularly nudge over the 20mpg mark.

Turbo S E-Hybrid cars come with a V8 engine and a plug-in hybrid system. By the book this means 70-ish mpg. But once again, this is reliant on plugging in regularly.

View detailed MPG and CO2 figures on the Porsche Cayenne specs pages

Servicing and warranty

New Cayennes comes with a three-year warranty and three-year assistance package that comes with European breakdown cover.

Servicing costs will be high, but no more so than other cars in this sector. Fixed-price service packages are available.


  • Near-bombproof reliability
  • Many parts used elsewhere
  • Read owners reviews

A lot of attention to detail goes into Porsche production, and the car feels very solid indeed, so there shouldn’t be too much to be concerned about.

According to the government, the Cayenne has been subject to four recalls since 2018.

Head on over to our owner’s review section to see what this generation of Cayenne is like to live with.

Ongoing running costs

Road tax (12 months) £510 - £520
Insurance group 44 - 50
How much is it to insure?