In-depth reviews

BMW X5 review - MPG, CO2 and running costs

Fuel efficiency is good for a hefty SUV, but other running costs won’t be cheap

The BMW X5 is big, heavy and not short on performance, so in relative terms efficiency is fairly strong. The figures are an improvement over the previous-generation X5’s, too.

If you’re looking to minimise running costs, the X5 to go for is the xDrive45e. It has a 3.0-litre six-cylinder engine and electric motor powered by a lithium ion battery with a 24kWh capacity. The impressive all-electric range of up to 54 miles helps deliver a combined fuel consumption figure of between 201.8 and 235.4mpg under WLTP testing. 

The xDrive30d will return average consumption of up to 42.2mpg, but emissions from 175g/km put it into the 37% Benefit-in-Kind (BiK) bracket, so it’s not cheap from a company car tax perspective. The other current diesel option is the 335bhp xDrive40d, which offers greater performance, yet still returns 39.2mpg and 188g/km of CO2. 

The petrol-engined xDrive40i is a lot thirstier at the pumps, with average fuel consumption of 31.4mpg and 205g/km of CO2.

The M50i is strictly for those with deep pockets, as the 4.4-litre V8 only manages a combined 23.9mpg with CO2 emissions of 263g/km, while the M Competition model is even less efficient with economy of 22.1mpg and producing 292g/km of CO2. 

Insurance groups

BMW and the Association of British Insurers haven’t confirmed group ratings for the BMW X5 yet, but given the performance on offer we’d expect ratings relatively similar to the previous model’s – the range there was from Group 37 all the way up to Group 50 for the extreme X5 M version.

Depreciation

The undoubted cachet of the BMW badge, the novelty value of the latest-generation X5 and the appeal of its style and technology should mean residual values remain strong. However, a comprehensive service record is vital at this end of the market, and owners would do well to care for their investment scrupulously to avoid paying a price at resale time.

Government approaches to petrol and diesel are causing uncertainty, and that could conceivably lead to weaker used prices in future. If you’re especially worried about that, it might be worth considering investing in the new xDrive45e plug-in hybrid.

Which Is Best

Cheapest

  • Name
    xDrive30d xLine 5dr Auto
  • Gearbox type
    Semi-auto
  • Price
    £57,370

Most Economical

  • Name
    xDrive30d MHT xLine 5dr Auto
  • Gearbox type
    Semi-auto
  • Price
    £58,945

Fastest

  • Name
    xDrive M50i 5dr Auto
  • Gearbox type
    Semi-auto
  • Price
    £75,485

Most Popular

UK’s most stolen cars revealed
Most stolen car
Ford Fiesta

UK’s most stolen cars revealed

DVLA data reveals which cars were most commonly stolen in 2020, with the Ford Fiesta topping the list
26 Jan 2021
Revised Mazda CX-5 crossover launched for 2021
Mazda CX-5 2021
Mazda CX-5

Revised Mazda CX-5 crossover launched for 2021

The updated Mazda CX-5 gets a larger displacement version of the brand’s SkyActiv-G petrol engine and a fresh infotainment system
26 Jan 2021
New MINI facelift revealed with updated look and added tech
MINI 3-door hatch facelift - front
MINI MINI

New MINI facelift revealed with updated look and added tech

The MINI range has been revised for 2021, with the hatch, Convertible and Electric models all getting a range of styling tweaks
26 Jan 2021