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: 31,410 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: Grey
• CO2: 129 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Kia Stonic GT Line S has covered 31,410 miles, around 4,800 fewer miles than is typical for its age. Its asking price of £11,879 is £1,928 below the AskCar estimate of £13,807. The AskCar estimate draws on 1,673 Kia Stonic adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. It first appeared in our advert records 13 days ago. Its advertised mileage matches the government's MOT record. The seller is Thurlow Nunn Luton, based in Luton. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Good value: £1,928 (13%) under the AskCar estimate of £13,807.

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 1,673 priced Kia Stonic adverts across different ages and specifications, as of 2 November 2026.

A 2021 Kia Stonic with the 1.0 petrol engine is typically advertised at £11,600: the median of the 130 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2021 Kia Stonic has been on sale for at least 13 days.

Price history

AskCar first saw this advert on 20 October 2026 at £11,879. 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 2 November 2026: valid until 27 May 2027.

It failed its MOT on 28 May 2026 (front windscreen wiper does not clear the windscreen effectively) and passed later the same day.

There were no advisories at the latest test.

Mileage at that test: 29,657 miles, which matches the advertised 31,410 miles.

Advertised mileage is about 4,800 miles lower than the median mileage of a 2021 Kia Stonic on AskCar.

Similar cars

12 other 2021 Kia Stonic GT Line S 1.0 petrol automatic SUVs are for sale at UK dealers, from £10,490 to £16,495, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2021 Kia Stonic GT Line S, 1.0 petrol SUV, grey. Mileage: 30,306 miles. Price: £14,195, £2,316 more than this car. Dealer: Lloyd West Cumbria Kia in Workington. AskCar page: https://askcar.co.uk/car/kia-stonic-2021-f6190673d59b
• 2021 Kia Stonic GT Line S, 1.0 petrol SUV, blue. Mileage: 29,019 miles. Price: £13,704, £1,825 more than this car. Dealer: Carbase Bristol in Bristol. AskCar page: https://askcar.co.uk/car/kia-stonic-2021-668a6abb4916
• 2021 Kia Stonic GT Line S, 1.0 petrol SUV, grey. Mileage: 28,401 miles. Price: £13,000, £1,121 more than this car. Dealer: Paynes Of Hinckley in Hinckley. AskCar page: https://askcar.co.uk/car/kia-stonic-2021-18a500e85f08

• The nearest: 2021 Kia Stonic GT Line S, 1.0 petrol SUV, red, 18 miles from this car. Mileage: 81,000 miles. Price: £10,490, £1,389 less than this car. Dealer: Sk Car Sales . Com in Enfield. AskCar page: https://askcar.co.uk/car/kia-stonic-2021-55657fa31032