Parkers overall rating: 3.4 out of 5 3.4

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

Reliable fuel consumption data for comparison purposes is not available for this model.

Fuel economy

A more stringent standard for fuel economy (WLTP) was introduced from September 2017, and this model was not required to undergo that test. Its fuel economy measured under the previous test system was 42 - 57 mpg. However these figures are less likely to be achievable in real world driving and so should never be compared to another car's mpg which was measured under the newer, more realistic WLTP system.
  • Diesel offers predictably lower fuel consumption
  • Both engines boast relatively low CO2
  • Quite an expensive car to start off with 

No surprises that the diesel QX30 is the pick of the two engines for low running costs, boasting 57.6mpg.

The petrol does okay though, with 42.2mpg – that’s not particularly bad but rivals claim to offer better economy whether petrol or diesel.

One of the biggest problems is the overall cost of the QX30 in the first place. This is not a cheap car and that will have a knock-on effect for monthly finance costs.

There isn’t a lot of choice when it comes to powertrain and CO2 emissions for both are middling at best.

You get 128g/km of CO2 with the diesel and 155g/km with the petrol, and no hybrid model in the pipeline to come and save the day.

While neither figure is all that high, it’s a shame there isn’t a lower emission model to help attract company car drivers looking for lower bills.

  • Borrowed engineering should mean good reliability
  • Engines and interior fittings used in lots of other cars
  • InTouch infotainment system an unknown element

As with the Q30, we don’t think you’ll have many problems with the Infiniti QX30 reliability.

It’s based on the Mercedes-Benz GLA, which means its two powertrains have been tried and tested elsewhere. We also haven’t seen any significant GLA (or A-Class family) recalls.

The only unknown element really is the InTouch multimedia system – and an earlier version of that was used in the Q50 with no reported problems. 

Ongoing running costs

Road tax (12 months) £135 - £165
See tax rates for all versions
Insurance group 21 - 26
How much is it to insure?