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: 38,510 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

This 2021 Kia Stonic GT Line S has covered 38,510 miles, around 2,300 more miles than is typical for its age. Its asking price of £11,299 is £508 below the AskCar estimate of £11,807. The AskCar estimate uses 1,725 UK dealer adverts for the Kia Stonic, with adjustments for age, mileage, trim, engine and other specifications. Since we first spotted the advert 162 days ago, the asking price has dropped by £1,700. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Richard Hardie Ashington, based in Ashington. 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: £508 (4%) under the AskCar estimate of £11,807.

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

This 2021 Kia Stonic has been on sale for at least 162 days.

Price history

AskCar first saw this advert on 28 May 2026 at £12,999. Its asking price is now £11,299, £1,700 less. The latest price cut was seen on 13 October 2026.

Price changes recorded:

• 28 May 2026: £12,999
• 10 July 2026: £12,599
• 20 July 2026: £12,299
• 20 August 2026: £11,999
• 13 October 2026: £11,299

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 30 December 2026.

It has had 3 MOTs. The latest, on 15 December 2025, passed.

Advisories at the latest test: offside rear service brake binding but not excessively; nearside rear child seat fitted not allowing full inspection of adult belt.

Mileage at that test: 35,012 miles, which matches the advertised 38,510 miles.

Advertised mileage is about 2,300 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: 36,546 miles. Price: £12,495, £1,196 more than this car. Dealer: Snows Kia Guildford in Guildford. AskCar page: https://askcar.co.uk/car/kia-stonic-2021-e4173b8b7ecb
• 2021 Kia Stonic GT Line S, 1.0 petrol SUV, yellow. Mileage: 36,400 miles. Price: £11,995, £696 more 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, white. Mileage: 42,249 miles. Price: £11,495, £196 more 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, 45 miles from this car. Mileage: 23,724 miles. Price: £12,649, £1,350 more than this car. Dealer: Motorpoint Stockton-on-Tees in Stockton-on-Tees. AskCar page: https://askcar.co.uk/car/kia-stonic-2021-9e554e1def29