In-depth Reviews

Kia Stonic SUV - MPG, running costs & CO2

Kia Stonic running costs are reasonable but not class-leading

Carbuyer Rating

3.6 out of 5

Owners Rating

5.0 out of 5

Read owner reviews
MPG, running costs & CO2 Rating

4.0 out of 5

Stonic buyers can now choose from one petrol engine and one diesel. Both manage reasonable economy - the engines roughly match the equivalent engines in the Skoda Kamiq - but a diesel Peugeot 2008 is noticeably more economical than a diesel Stonic.

Kia Stonic MPG & CO2

The previous entry-level 1.4-litre petrol engine has been retired but that’s essentially because the 1.0-litre turbo petrol is clearly superior. It claims 46.3mpg and CO2 emissions of 138g/km, and has the lowest Benefit-in-Kind (BiK) rating for company-car drivers.

The diesel option is the 1.6-litre CRDi, which will do 56.5mpg with CO2 emissions of 130g/km.

All versions of the Stonic will cost £150 a year in VED (road tax) after the first year.

Insurance group

Kia benefits from relatively low insurance groups, giving its cars some extra appeal for younger drivers. The Stonic is rated in groups 11-14 depending on exact specification, while the Renault Captur occupies groups 8-19 and the Stonic compares favourably with the Peugeot 2008 in groups 13-23.


Kia is one of the best manufacturers in the business when it comes to the warranty offered with its new cars. The Stonic is covered for seven years/100,000 miles, offering buyers great peace of mind.


Kia servicing costs are reasonable. Petrol Stonics need a service every 10,000 miles or 12 months, with diesels needing attention every 20,000 miles or 12 months.

Kia offers a ‘Care-3’ service pack that costs £300 and covers you for the first three services. For an extra £30, you can get the car’s first MOT included, and for £600 you can cover the cost of the car’s first five services.

Most Popular

New Renault 5 electric car on sale by 2025
14 Jan 2021

New Renault 5 electric car on sale by 2025

Best small SUVs
Small SUVs
31 Dec 2020

Best small SUVs

Best 4x4s and SUVs
Peugeot 3008 SUV rear 3/4 tracking
Family SUVs
14 Jan 2021

Best 4x4s and SUVs