2023 Kia Stonic 1.0 T-GDi MHEV GT Line S
Price: £14,295. Good value: £2,405 (14%) under the AskCar estimate of £17,178, our expected asking price for this car from its model, age, mileage and specification, drawing on 6,829 priced Kia Stonic adverts on AskCar as of 10 November 2026.
AskCar lists 1,720 used Kia Stonic from 815 UK dealerships, as of 10 November 2026.
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: 2023
- Mileage: 39,553 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
At 39,553 miles, this 2023 Kia Stonic GT Line S has covered about 27,000 fewer miles than other 2023 Kia Stonic cars. The dealer is asking £14,295, which is £2,405 below the AskCar estimate of £17,178. To work out the AskCar estimate, we analyse UK dealer adverts for 6,829 Kia Stonic cars across different ages and specifications. This car was first seen in our listings data 60 days ago. Its advertised mileage matches the government's MOT record. The seller is Brayleys Cars Brayley Kia Harpenden, based in Harpenden. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 10 November 2026.
Brayleys Cars Brayley Kia Harpenden is rated 4.6 out of 5 on Google.
Price
Good value: £2,405 (14%) under the AskCar estimate of £17,178.
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 6,829 priced Kia Stonic adverts across different ages and specifications, as of 10 November 2026.
A 2023 Kia Stonic with the 1.0 petrol engine is typically advertised at £14,700: the median of the 574 for sale on AskCar, as of 10 November 2026.
Time on sale
This 2023 Kia Stonic has been on sale for at least 60 days.
Price history
AskCar first saw this advert on 11 September 2026 at £15,695. Its asking price is now £14,295, £1,400 less.
Price changes recorded:
- 25 October 2026: £15,695
- 9 November 2026: £19,489
Mileage and MOT
MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 10 November 2026: valid until 8 December 2026.
It has had 5 MOTs. The latest, on 9 December 2025, passed.
There were no advisories at the latest test.
Mileage at that test: 30,934 miles, which matches the advertised 39,553 miles.
Advertised mileage is about 27,000 miles lower than the median mileage of a 2023 Kia Stonic on AskCar.
Browse all Kia Stonic cars for sale · 2023 Kia Stonic price guide
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As of 10 November 2026, AskCar lists 591,054 cars and vans from 12,888 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.