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Lexus NX running costs and reliability

2021 onwards (change model)
Running costs rating: 4.8 out of 54.8

Written by Murray Scullion Updated: 24 March 2023

Miles per pound (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.
Hybrid petrol engines 6.5 - 7.3 mpp
Plug-in hybrid petrol engines * 6.1 - 6.6 mpp
* Fuel economy of the engine when operating without assistance from the electric motor and battery.
What is miles per pound?

Fuel economy

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.
Hybrid petrol engines 44.1 - 49.5 mpg
Plug-in hybrid petrol engines * 41.5 - 44.8 mpg
* Fuel economy of the engine when operating without assistance from the electric motor and battery.
View mpg & specs for any version
  • 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

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Lexus NX ownership costs
Lexus NX ownership costs

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.

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Lexus NX running costs
Lexus NX running costs

Reliability

  • 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.