2021 Kia Stonic 1.0 T-GDi MHEV GT Line S

Overview

• Make: Kia
• Model: Stonic
• Trim: GT Line S
• Version: 1.0 T-GDi Mhev GT Line S Manual FWD Euro 6 (s/s) 5dr (118 bhp)
• Year: 2021
• Mileage: 36,546 miles
• Fuel: Petrol, mild hybrid
• Body: SUV, 5 doors, 5 seats
• Engine: 1.0 litres, 118 bhp
• Gearbox: Manual
• Drive: Front-wheel drive
• Colour: Yellow
• CO2: 127 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

The advertised mileage for this 2021 Kia Stonic GT Line S is 36,546 miles. Priced at £12,495, it is advertised £560 above the AskCar estimate of £11,935. To work out the AskCar estimate, we analyse UK dealer adverts for 1,725 Kia Stonic cars across different ages and specifications. It first appeared in our advert records today. We checked its advertised mileage against the government's MOT record, and they match. The seller is Snows Kia Guildford, based in Guildford. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 6 November 2026.

How we estimate prices and check cars

Price

Fair price: £560 (4%) over the AskCar estimate of £11,935.

The AskCar estimate is our expected asking price for this car. It uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It is an advertised price, not a confirmed sale price.

It draws on 1,725 priced Kia Stonic adverts across different ages and specifications, as of 6 November 2026.

A 2021 Kia Stonic with the 1.0 petrol engine is typically advertised at £11,600: the median of the 137 for sale on AskCar, as of 6 November 2026.

Time on sale

AskCar first saw this 2021 Kia Stonic advertised today. About half of 2021 Kia Stonic cars are gone from sale within a month of being advertised: 90 of the 200 first advertised between 11 July 2026 and 3 October 2026.

Price history

AskCar first saw this advert on 6 November 2026 at £12,495. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 24 November 2026.

It has had 2 MOTs. The latest, on 4 November 2025, passed.

Advisories at the latest test: vehicles internal headlight adjuster altered to recheck lights; windscreen damaged but not adversely affecting driver's view; offside rear nail in tyre.

Mileage at that test: 30,532 miles, which matches the advertised 36,546 miles.

Advertised mileage is about 300 miles higher than the median mileage of a 2021 Kia Stonic on AskCar.

Similar cars

18 other 2021 Kia Stonic GT Line S 1.0 petrol manual SUVs are for sale at UK dealers, from £8,995 to £12,799, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2021 Kia Stonic GT Line S, 1.0 petrol SUV, yellow. Mileage: 36,400 miles. Price: £11,995, £500 less than this car. Dealer: Kia Brighton - Tates in Pyecombe. AskCar page: https://askcar.co.uk/car/kia-stonic-2021-ace35a53f1b7
• 2021 Kia Stonic GT Line S, 1.0 petrol SUV, yellow. Mileage: 38,510 miles. Price: £11,299, £1,196 less than this car. Dealer: Richard Hardie Ashington in Ashington. AskCar page: https://askcar.co.uk/car/kia-stonic-2021-273798613e0c
• 2021 Kia Stonic GT Line S, 1.0 petrol SUV, white. Mileage: 42,249 miles. Price: £11,495, £1,000 less than this car. Dealer: Park's Motor Group Chery East Kilbride in East Kilbride. AskCar page: https://askcar.co.uk/car/kia-stonic-2021-a81716eb232f

• The nearest: 2021 Kia Stonic GT Line S, 1.0 petrol SUV, blue, 25 miles from this car. Mileage: 45,668 miles. Price: £8,995, £3,500 less than this car. Dealer: Top Gear Harrow in Harrow. AskCar page: https://askcar.co.uk/car/kia-stonic-2021-642e8174f1ec