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: 23,759 miles
• Fuel: Petrol, mild hybrid
• Body: SUV, 5 doors, 5 seats
• Engine: 1.0 litres, 118 bhp
• Gearbox: Manual
• Drive: Front-wheel drive
• Colour: Red
• CO2: 127 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Kia Stonic GT Line S has covered 23,759 miles, around 12,400 fewer miles than is typical for its age. Its asking price of £12,300 is £400 below the AskCar estimate of £12,700. To work out the AskCar estimate, we analyse UK dealer adverts for 1,703 Kia Stonic cars across different ages and specifications. We first saw this car advertised 42 days ago. Its asking price has since fallen by £700. The government's MOT record matches its advertised mileage. It is for sale at JW Autos in Rochester. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Fair price: £400 (3%) under the AskCar estimate of £12,700.

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 1,703 priced Kia Stonic adverts across different ages and specifications, as of 4 November 2026.

A 2021 Kia Stonic with the 1.0 petrol engine is typically advertised at £11,600: the median of the 139 for sale on AskCar, as of 4 November 2026.

Time on sale

This 2021 Kia Stonic has been on sale for at least 42 days.

Price history

AskCar first saw this advert on 23 September 2026 at £13,000. Its asking price is now £12,300, £700 less. The latest price cut was seen on 1 October 2026.

Price changes recorded:

• 23 September 2026: £13,000
• 1 October 2026: £12,300

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 24 September 2027.

It has had 3 MOTs. The latest, on 25 September 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 23,755 miles, which matches the advertised 23,759 miles.

Advertised mileage is about 12,400 miles lower than the median mileage of a 2021 Kia Stonic on AskCar.

Similar cars

17 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 4 November 2026.

The 3 closest to this car in mileage:

• 2021 Kia Stonic GT Line S, 1.0 petrol SUV, blue. Mileage: 23,724 miles. Price: £12,649, £349 more than this car. Dealer: Motorpoint Stockton-on-Tees in Stockton-on-Tees. AskCar page: https://askcar.co.uk/car/kia-stonic-2021-9e554e1def29
• 2021 Kia Stonic GT Line S, 1.0 petrol SUV, grey. Mileage: 25,560 miles. Price: £12,298, the same price as this car. Dealer: Eddie Wright Car Supermarket in Scunthorpe. AskCar page: https://askcar.co.uk/car/kia-stonic-2021-e57a8ef9339a
• 2021 Kia Stonic GT Line S, 1.0 petrol SUV, red. Mileage: 20,643 miles. Price: £12,799, £499 more than this car. Dealer: Motorpoint Birmingham in Birmingham. AskCar page: https://askcar.co.uk/car/kia-stonic-2021-a99a9d0936d0

• The nearest: 2021 Kia Stonic GT Line S, 1.0 petrol SUV, blue, 38 miles from this car. Mileage: 45,668 miles. Price: £8,995, £3,305 less than this car. Dealer: Top Gear Harrow in Harrow. AskCar page: https://askcar.co.uk/car/kia-stonic-2021-642e8174f1ec