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 DCT FWD Euro 6 (s/s) 5dr (118 bhp)
• Year: 2021
• Mileage: 13,000 miles
• Fuel: Petrol, mild hybrid
• Body: SUV, 5 doors, 5 seats
• Engine: 1.0 litres, 118 bhp
• Gearbox: Automatic (DCT)
• Drive: Front-wheel drive
• Colour: Red
• CO2: 129 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Kia Stonic GT Line S has covered 13,000 miles. Priced at £15,495, it is advertised £703 above the AskCar estimate of £14,792. The AskCar estimate uses 1,685 UK dealer adverts for the Kia Stonic, with adjustments for age, mileage, trim, engine and other specifications. Since we first spotted the advert 44 days ago, the asking price has dropped by £700. Ask the dealer why the advert shows fewer miles than the 14,063 recorded at the latest MOT. MOT records show an expiry date of 21 September 2027. The seller is Gravells Bridgend, based in Bridgend. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 8 November 2026.

How we estimate prices and check cars

Price

Fair price: £703 (4%) over the AskCar estimate of £14,792.

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 1,685 priced Kia Stonic adverts across different ages and specifications, as of 8 November 2026.

A 2021 Kia Stonic with the 1.0 petrol engine is typically advertised at £11,500: the median of the 131 for sale on AskCar, as of 8 November 2026.

Time on sale

This 2021 Kia Stonic has been on sale for at least 44 days.

Price history

AskCar first saw this advert on 25 September 2026 at £16,195. Its asking price is now £15,495, £700 less. The latest price cut was seen on 7 November 2026.

Price changes recorded:

• 25 September 2026: £16,195
• 7 November 2026: £15,495

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 8 November 2026: valid until 21 September 2027.

It has had 3 MOTs. The latest, on 22 September 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 14,063 miles. The advert says 13,000 miles, fewer than the MOT record, so ask the dealer which is right.

Advertised mileage is about 22,600 miles lower than the median mileage of a 2021 Kia Stonic on AskCar.

Similar cars

15 other 2021 Kia Stonic GT Line S 1.0 petrol automatic SUVs are for sale at UK dealers, from £10,195 to £14,995, as of 8 November 2026.

The 3 closest to this car in mileage:

• 2021 Kia Stonic GT Line S, 1.0 petrol SUV, grey. Mileage: 18,819 miles. Price: £14,995, £500 less than this car. Dealer: Triangle Of Chesterfield in Chesterfield. AskCar page: https://askcar.co.uk/car/kia-stonic-2021-9b4f50021989
• 2021 Kia Stonic GT Line S, 1.0 petrol SUV, white. Mileage: 25,157 miles. Price: £13,999, £1,496 less than this car. Dealer: Magenta Cars in Ashington. AskCar page: https://askcar.co.uk/car/kia-stonic-2021-89b5b3996f57
• 2021 Kia Stonic GT Line S, 1.0 petrol SUV, white. Mileage: 25,828 miles. Price: £13,400, £2,095 less than this car. Dealer: Budgen Motors MG Telford in Telford. AskCar page: https://askcar.co.uk/car/kia-stonic-2021-ed597d4f670a

• The nearest: 2021 Kia Stonic GT Line S, 1.0 petrol SUV, blue, 43 miles from this car. Mileage: 29,019 miles. Price: £13,704, £1,791 less than this car. Dealer: Carbase Bristol in Bristol. AskCar page: https://askcar.co.uk/car/kia-stonic-2021-668a6abb4916