Parkers overall rating: 4.1 out of 5 4.1

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

Petrol engines 3.5 - 4.3 mpp
Diesel engines 3.6 - 5.5 mpp
Plug-in hybrid diesel engines 38.8 - 43.6 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 26.2 - 32.5 mpg
Diesel engines 29.1 - 44.8 mpg
Plug-in hybrid diesel engines 313.9 - 353.1 mpg
  • Likely to be high – although no more so than rivals
  • Entry-level 300 d was the cheapest to run…
  • …Until plug-in hybrid version arrived

For the most cost-effective GLE the 300 d is the obvious choice. It may not benefit from the 450’s EQ Boost mild-hybrid technology, but it does boast a respectable 46.3mpg claimed average fuel economy figure. Opt for the GLE 450 meanwhile and you can expect a far less impressive return of 33.6mpg.

Buyers who expect to do lots of urban driving (or plenty of short journeys) would be wise to hold off until the plug-in hybrid version is launched. While long distance fuel economy will still lag behind the 300 d, trips of under 20-25 miles should, in theory, be achievable on electric power only, and it manages an impressive 62 miles of electric driving range. If you can charge at home before and after almost all of your journeys, Mercedes claims over 400mpg is possible.

Mercedes-Benz currently offers the ServiceCare plan in the UK for new and used vehicles, guaranteeing the price and parts for labour for up to four services – safeguarding against inflation. Recommended service items such as brake fluid, spark plugs, air filters, fuel filters and screen wash are also included.

Those looking to keep their CO2 emissions down should head straight for the 350 de plug-in hybrid (PHEV), claiming just 29g/km. While the next best performer – the 300 d – produces a distinctly average 162g/km of CO2 (depending on wheel size).

Unsurprisingly the GLE 450 is one to avoid if you’ve got one eye on eco-friendliness. Producing 191g/km of CO2 (depending on wheel size), it won’t be appearing on the Greenpeace company car list anytime soon.

Is it reliable?

  • No major warning signs
  • Previous-generation model only had one recall
  • Cabin build quality appears superior to other Mercedes models

The GLE is a brand-new car with new technology and engines over the previous generation model. This means it’s hard to get an accurate read on reliability at this point, although we can comment that the interior felt impressively sturdy and well put together.

You may take this for granted, but other recent Mercedes-Benz models we’ve driven have had the odd annoying creak and rattle – not something we experienced in the GLE.

For reference, the previous GLE was only subject to one recall in its lifetime, courtesy of a fault with the vehicle’s ECU programming.

Ongoing running costs

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