Parkers overall rating: 4.5 out of 5 4.5

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

Petrol engines 7.5 - 9.0 mpp
Diesel engines 8.0 - 10.0 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

Petrol engines 35.3 - 42.2 mpg
Diesel engines 39.8 - 49.6 mpg
  • Fuel economy lags behind rivals' claims
  • No hybrid to boost efficiency further
  • Choose 150hp diesel for best economy

Mazda is famous for improving economy though marginal gains – shaving a gram or two of emissions here and there, or revising the ball bearings in the all-wheel drive system for 2% better economy. It's all part of what it collectively terms SkyActiv.

Under the more rigorous WLTP fuel efficiency testing methodology, Mazda's figures - which it previously claimed were closer to real-world economy statistics - are much closer to those of rivals, but they are nevertheless hampered by  lack of a plug-in hybrid option. These are reflected in the miles per pound costs, with a pricey looking span of 7.5 - 10.0 mpp across the line-up.

The most impressive model in the CX-5 line-up for economy is the 150hp SkyActiv-D diesel with a manual transmission, ranging from 47.9-49.6mpg. With the automatic option, that drops to 43.5mpg. If you fancier the punchier 184hp diesel with AWD, then you're looking at 42.8mpg for the manual and 39.8mpg for the automatic.

Those figures are very close to the 165hp SkyActiv-G petrol engine at 39.2-39.8mpg for the manual and 36.7mpg for the automatic. In the week we had the CX-5 with this engine, we averaged 34.6mpg, which isn't bad considering much of the mileage was on the motorway, where its cylinder deactivation technology would have been rarely used.

No low-CO2 model

Given the larger capacity of the engines available with the Mazda CX-5, it’s not surprising to see high CO2 emissions – the lowest on offer is 151g/km from the 150hp diesel, with two-wheel drive and a manual gearbox, while the petrol weighs in at 160g/km.

However, if you’re a company car driver looking for the cheapest CX-5 in tax, you may still want to consider the petrol model. That’s because the much lower price outweighs the higher emissions, potentially saving you around £10-£20 per month.

Despite this, the 150hp diesel is the much more appealing option for most drivers; if you cover lots of miles, you’re likely to save money on fuel, too. Bypass the automatic gearbox and all-wheel drive versions for the lowest bills, as both could add substantially to your monthly charges.

How reliable is the CX-5?

  • Mazda has a strong record in this area
  • Only one official recall for the CX-5
  • Well-constructed, feels resilient

Much of the CX-5's understructure and mechanical components are shared with other models in its portfolio and while Mazda hasn't always enjoyed the rosiest of reliability records, this certainly seem impressive here.

According to the DVSA vehicle inspectorate, there has only been one official recall of this generation of CX-5 since its launch in 2017 and that contained a potential soot build-up around some engine internals. That should be rememdied on all models, with a Mazda dealer being able to confirm it for specific vehicles.

Elsewhere, the generally high quality of the plastics is matched by the accuracy of their assembly and the robustness of all the buttons and knobs on the dashboard. It feels like it's built to stand the rigours of family life.

Ongoing running costs

Road tax (12 months) £150
Insurance group 14 - 23
How much is it to insure?