In-depth reviews

Mazda MX-5 review - MPG, CO2 and running costs

Mazda doesn’t use turbos to boost efficiency, but still claims impressive economy figures for the MX-5

Mazda claims it prefers not to focus on achieving spectacular results in the official EU economy cycle; instead, it says it’s more interested in giving customers real-world fuel savings.

That’s why its strategy is based around high-compression naturally aspirated petrol engines rather than following the turbocharged, downsizing trend. Both the engines offered in the MX-5 use direct injection technology, but the smaller 1.5-litre SkyActiv unit delivers better economy – it returns 44.8mpg with CO2 emissions of 142g/km.

The 2.0-litre comes with Mazda’s i-stop and E-Loop fuel-saving technology, giving the engine figures of 40.9mpg and 155g/km.

Despite its exotic shape, the MX-5 should be no more expensive to run than, say, a Mazda 3 hatchback – both use a variety of common components, so replacement parts should be easy to track down and relatively affordable.

If you’re planning to wait for a more powerful turbocharged MX-5 or a more efficient diesel version, don’t hold your breath – Mazda’s engineers have ruled out both, in the near future at least.

Insurance groups

Insurance groups correspond with the two engine sizes on offer and start at group 27 for the 1.5-litre, climbing to group 33 for top-spec cars. Limited edition cars run slightly higher, with the recent 30th Anniversary model occupying group 34. 

Depreciation

Despite our changeable weather, the UK is one of the largest markets for convertibles in Europe – so it follows that the MX-5 should hold its value well. Experts predict the two-seater roadster should retain around 55 per cent of its original value over a typical three-year/36,000-mile ownership period.

Next Steps

Which Is Best

Cheapest

  • Name
    1.5 [132] SE-L 2dr
  • Gearbox type
    Manual
  • Price
    £24,480

Most Economical

  • Name
    1.5 [132] SE-L 2dr
  • Gearbox type
    Manual
  • Price
    £24,480

Fastest

  • Name
    1.5 [132] SE-L 2dr
  • Gearbox type
    Manual
  • Price
    £24,480

Most Popular

“Mid-sized electric cars are way beyond the financial reach of most mums and dads”
Opinion - electric car prices
Opinion

“Mid-sized electric cars are way beyond the financial reach of most mums and dads”

Mike Rutherford thinks the industry needs to face the fact that a lot of people can’t afford a brand new factory-fresh car
16 May 2022
Best electric cars to buy 2022
Best electric cars
Electric cars

Best electric cars to buy 2022

There are more electric cars than ever to choose from, so we've picked some of the best you can buy in the UK now
28 Apr 2022
Shell and ABB team up to deliver world’s fastest electric car charger
Shell charger
News

Shell and ABB team up to deliver world’s fastest electric car charger

New Shell and ABB-developed Terra 360 EV charger can add 62 miles of range in less than three minutes
16 May 2022