Mazda CX-30 SUV - MPG, running costs & CO2

Mazda has a reputation for clever engineering and the Mazda CX-30 is no different, featuring the world's first petrol engine with compression ignition - a technology first developed for diesel engines and branded SkyActiv-X. For 2021 this was improved upon again, with design updates, the addition of a mild-hybrid system and a new e-SkyActiv-X name. The idea is to give the range-topping CX-30 the driver appeal of a petrol but with fuel-efficiency that competes with its most frugal rivals.

Such advanced tech comes at a premium though, so an entry-level petrol e-SkyActiv-G engine is also available lower in the range. After initially offering the CX-30 with a SkyActiv-D diesel engine, Mazda withdrew it from sale in late 2019, making the CX-30 petrol only.

Mazda CX-30 MPG & CO2

If you're looking for a petrol compact SUV, the Mazda CX-30 is among the most affordable to run on the market. Even the less powerful but thirstier e-SkyActiv-G 2.0-litre petrol can manage a respectable 47.9mpg when smaller wheels, front-wheel drive and a manual gearbox are fitted. However, middling CO2 emissions are unlikely to make it popular with company-car drivers. Cars with more electrification, such as the Renault Captur plug-in hybrid and Hyundai Kona Electric, will cost you less in company-car tax if this applies to you.

Mazda's e-SkyActiv-X engine is also 2.0 litres in capacity but uses clever engineering to produce more power with less fuel and cleaner tailpipe emissions, resulting in CO2 emissions from 128g/km for the front-wheel drive model with a manual gearbox and up to 50.4mpg. However, it's worth noting the figures can drop to a less impressive 42.8mpg and 149g/km for the four-wheel-drive e-SkyActiv-X model with an automatic gearbox.

Every mild-hybrid ‘e-SkyActiv’ Mazda CX-30 will cost the slightly discounted annual rate for road tax, and Mazda owners have told us that servicing and maintenance is reasonably priced.

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Insurance groups

Insurance groups for the Mazda CX-30 are reasonable, starting from 12 out of 50 for the entry-level SE-L e-SkyActiv-G version. The same specification with the more powerful e-SkyActiv-X engine takes this up to group 18, while the top GT Sport Tech model can reach group 21.

Warranty

Mazda models come with a three-year, 60,000-mile warranty. This matches models from Ford and Volkswagen, but is underwhelming next to the five- and 10-year warranties offered by Hyundai and Toyota.

Servicing

Typical service intervals for Mazda models sit 12,500 miles apart, or annually, depending on which comes first. Servicing plans can cover routine maintenance with one upfront payment, or spread out monthly.