# Kia Stonic — Used Car Buying Guide

AutoScout's analysis of the Kia Stonic on the UK used-car market. Backed by 33 million DVSA MOT tests, current AutoTrader pricing, and depreciation curves derived from CAP/Glass's Guide data.

Live interactive report: https://autoscout.fyi/cars/kia-stonic

## Verdict

- **Best value year**: 2021
- **Ideal trim**: GT-Line
- **Target mileage**: 30,000–50,000 miles
- **Max previous owners**: 2
- **Target price**: £12,500

## Why this model

The Kia Stonic is a fantastic choice if you're looking for a stylish, compact SUV that's easy to drive and won't break the bank to run. It's built on the same platform as the Rio, so it's nimble around town, but gives you that higher driving position many people love. Kia's reputation for reliability is excellent, and the Stonic benefits from that, meaning fewer unexpected repair bills. It's a practical size for small families or individuals, offering decent boot space and a comfortable cabin for its class. Plus, it still looks quite modern, even a few years on.

## What you should pay

Based on current UK market data for February 2026, a 2021 Kia Stonic GT-Line with around 30,000-50,000 miles should be realistically priced around £12,500. You might see some listed slightly higher, but with a bit of negotiation, this is a fair target. Prices can vary by a few hundred pounds depending on exact mileage, condition, and optional extras, but don't pay much more than £13,000 for a good example of this spec and year.

## Which trim to buy

The GT-Line trim is definitely the sweet spot for the Stonic. It adds a sportier look with unique bumpers, side skirts, and larger alloy wheels, making it stand out more than the entry-level '2' or '3' trims. Inside, you get a nicer interior with part-leather upholstery, a flat-bottom steering wheel, and usually an upgraded infotainment system with navigation and smartphone integration (Apple CarPlay/Android Auto). It offers a great balance of style, features, and value without pushing the price too high, making it feel much more premium than its price tag suggests.

## What to check before you buy

- Minor interior rattles or occasional infotainment glitches are sometimes reported, but no major widespread mechanical issues.

## Running costs

Expect to get around 37-42 mpg in real-world mixed driving. At current petrol prices (approx. £1.50/litre), that works out to roughly 16-19 pence per mile. Road tax (VED) for a 2021 model is £190 per year due to its CO2 emissions (119 g/km). Insurance costs are generally competitive for the Stonic, falling into lower-to-mid groups, making it quite affordable for most drivers. Overall, running costs are very reasonable for a compact SUV.

## Key stats

- **Fuel Type**: Petrol
- **Horsepower**: 99-118 hp
- **Mpg**: 37-42 mpg
- **Reliability Score**: Excellent
- **Safety Rating**: 5-star (with optional safety pack, 2017 Euro NCAP)

## Trim comparison

| Trim | Price new | Price used | Key features |
| --- | --- | --- | --- |
| 1.0 T-GDi '2' | £19,000 | £9,000 | 16-inch alloy wheels; Air conditioning; 7-inch touchscreen infotainment |
| 1.0 T-GDi GT-Line | £21,000 | £11,000 | 17-inch alloy wheels; Sporty exterior styling kit; LED daytime running lights |
| 1.0 T-GDi GT-Line S | £23,000 | £12,500 | Full LED headlights; Keyless entry and start; Heated front seats |

## Depreciation forecast

| Year | Estimated value | Retention |
| --- | --- | --- |
| 2026 | £12,500 | 0% |
| 2027 | £11,250 | 10% |
| 2028 | £10,125 | 19% |
| 2029 | £9,112 | 27% |
| 2030 | £8,200 | 34% |

Buying a 3-5 year old Kia Stonic like a 2021 model is often the sweet spot for depreciation. The steepest drop in value happens in the first few years, so you're letting the first owner take that hit. From this point, the depreciation curve flattens out significantly, meaning your car will lose value at a much slower rate over the next few years compared to buying new or nearly new. This makes it a smart financial move for long-term ownership.

Total value lost since new: 34.4%.

## Alternatives to consider

- [Ford Puma](https://autoscout.fyi/cars/ford-puma.md)
- [Nissan Juke](https://autoscout.fyi/cars/nissan-juke.md)
- [Renault Captur](https://autoscout.fyi/cars/renault-captur.md)

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Source: AutoScout (https://autoscout.fyi). Part of a review of the UK used-car market across 500+ models.