Parkers overall rating: 4.1 out of 5 4.1

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

Hybrid petrol engines 5.9 - 6.6 mpp
Plug-in hybrid petrol engines 34.2 - 41.8 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

Hybrid petrol engines 44.1 - 49.5 mpg
Plug-in hybrid petrol engines 256.8 - 313.8 mpg
  • Plug-in is the frugalist
  • ‘Self-charging’ hybrid also available
  • No diesels

What are the running costs?

Only two engines on offer here, and we’ll kick things off with the plug-in. Running costs with a PHEV depend mostly on your charging behaviour, so the combined WLTP figure of up to 313.9mpg for the 450h+ is a little meaningless.

But CO2 emissions as low as 21g/km mean Benefit-in-Kind tax is extremely low, even among similar plug-in hybrids.

The traditional hybrid comes in two-wheel drive and four-wheel drive configurations, with the former promising higher mpg.

We’ve only tested the 4WD model so far. Officially its figures are 44.1-47.9mpg and on a mixed test route we achieved 42mpg, which is very good.

View detailed MPG and CO2 figures on the Lexus NX specs pages

Servicing and warranty

Service intervals for all models are every 10,000 miles or annually, whichever comes first.

As standard, the NX comes with a three-year/60,000 mile warranty. But this can be extended to an industry-leading 10-year/100,000 mile warranty.


  • Too new to tell
  • Lexus is known for reliability
  • Huge warranty shows company’s confidence

As this is a new car, it’s too early to write anything meaningful about its reliability.

But the previous model only accrued two recalls in the seven years it was on sale.

Ongoing running costs

Road tax (12 months) £155 - £510
Insurance group 31 - 41
How much is it to insure?