Parkers overall rating: 4 out of 5 4.0

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

Hybrid petrol engines 10.0 - 11.4 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.

Fuel economy

Hybrid petrol engines 47.0 - 53.3 mpg
  • Some good claimed fuel economy figures
  • Hybrid engine can be very efficient around town
  • E-Four models slightly less frugal

With just one engine available, it’s easy to sift through the UX’s economy figures. For the front-wheel drive model, Lexus claims between 49.5 and 53.2mpg. The lower figure is for cars on smaller alloy wheels.

Go for the E-Four version and there’s only a small penalty – claiming between 46.3mpg and 47mpg.

It shouldn’t be too difficult to get near these figures in everyday driving – as long as you’re not revving the nuts off it.

As with fuel economy, the UX’s CO2 emissions figures are easy to decipher, with just two variants of the same engine.

Tested on the new WLTP emissions cycle, the best-performing UX for emissions comes in at 120g/km, while the worst offender is just over 130g/km – figures that are more than competitive with the majority of its rivals.

Is it reliable?

  • Should be very little to be concerned about
  • New hybrid powertrain but Lexus has an excellent reputation
  • Looks and feels well engineered and well built

Despite featuring a new hybrid powertrain, there’s little reason to expect the UX to be an unreliable car to own. Lexus has a stellar reputation for building cars to very high standards – with some incredible attention to detail that they call ‘Takumi Craftsmanship’. This features things such as windows that slow down before they close to make less noise, and exhaustive testing of the way the doors shut to ensure it’s a solid-sounding noise.

In terms of mechanical components, Lexus has been building hybrids for years, so the technology used should be top notch and very well tested.

Ongoing running costs

Road tax (12 months) £140 - £465
Insurance group 22 - 26
How much is it to insure?