2021 Kia Stonic

1.0 T-GDi Mhev GT Line Manual FWD Euro 6 (s/s) 5dr (118 bhp)

£11,298

Fair price: within 8% of the typical £11,600 for this model, age and mileage, drawing on 1,694 adverts of this make and model.

Overview

Make: Kia
Model: Stonic
Trim: GT LINE
Version: 1.0 T-GDi Mhev GT Line Manual FWD Euro 6 (s/s) 5dr (118 bhp)
Mileage: 40,300 miles
Year: 2021
Fuel type: Petrol Hybrid
Body type: SUV
Engine: 1.0 L
Gearbox: Manual
Power: 118 bhp
Seats: 5
CO2: 127 g/km
Colour: Grey
Doors: 5
Driven wheels: Front Wheel Drive
Engine badge: T-GDi; MHEV
Hybrid type: Mild hybrid
Emissions standard: Euro 6

About this car

With 40,300 miles on the clock, this 2021 Kia Stonic GT Line has done roughly 3,500 more miles than a typical 2021 Kia Stonic. Our estimated market asking price is £11,600. This car is advertised at £11,298, which is £302 below that figure. Our estimate draws on 1,694 Kia Stonic adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We have tracked this advert for 57 days. It is advertised by CarSupermarket.com Grimsby in North East Lincolnshire.

Stock data from 23 October 2026.

How we estimate prices and check cars

Price history

First seen on 29 August 2026, 57 days ago. Advert duration calculated on 25 October 2026.

Recorded asking prices
Date observed	Asking price
29 August 2026	£11,198
23 October 2026	£11,298

Price and mileage comparison

Estimated market asking price: £11,600. The asking price is £302 below this estimate.

The estimate uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It estimates an advertised price, not a confirmed sale price.

The pricing calculation includes 1,694 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 3,500 miles higher than typical for a 2021 Kia Stonic.

19 other cars with the same year, trim, gearbox and fuel are for sale from £9,990 to £12,495.

Other matching cars (up to five, cheapest first)
Asking price	Mileage
£9,990	55,570 miles
£9,995	72,900 miles
£10,000	50,000 miles
£10,295	56,734 miles
£10,758	56,269 miles

These cars have covered 20,482–72,900 miles, compared with 40,300 miles for this car.

Matching year, trim, gearbox and fuel does not mean matching mileage or every specification. Our estimate adjusts for these differences using the wider market data.

Browse all Kia Stonic cars for sale · 2021 Kia Stonic price guide

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