# Audi Q3 — Used Car Buying Guide

AutoScout's analysis of the Audi Q3 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/audi-q3

## Verdict

- **Best value year**: 2021
- **Ideal trim**: S Line
- **Target mileage**: 30,000–50,000 miles
- **Max previous owners**: 2
- **Target price**: £19,783

## Why this model

The Audi Q3 is a fantastic choice if you're looking for a premium compact SUV that blends style, practicality, and a great driving experience. It feels really solid and well-built, with a high-quality interior that's a step above many rivals. It's comfortable for longer journeys, handles well around town, and has enough space for a small family. Plus, it holds its value pretty well, which is always a bonus when buying used.

## What you should pay

Based on current UK market data for February 2026, a 2021 Audi Q3 S Line 35 TFSI with around 30,000-50,000 miles typically sells for around £19,783. This price reflects the car being 3-4 years old, past its steepest depreciation, but still modern enough to feel current and have plenty of life left. Prices can vary slightly depending on exact mileage, condition, and optional extras, but this is a solid benchmark.

## Which trim to buy

The S Line trim is definitely the sweet spot for the Q3. It gives you that sportier, more aggressive look with bigger wheels and body styling, which really enhances the car's appeal. Inside, you usually get upgraded sports seats, better infotainment, and more tech features than the entry-level Sport trim, without jumping to the significantly pricier Black Edition. It strikes a great balance between aesthetics, features, and value for money on the used market.

## What to check before you buy

- Some owners report minor electrical gremlins
- Potential for premature tyre wear on larger alloy wheels (S Line/Black Edition)
- Infotainment system glitches (often resolved with software updates)
- DSG/S-Tronic gearbox can have issues if not maintained properly (though less common on newer models)

## Running costs

For a petrol 35 TFSI model, you can expect fuel costs of around 20-22 pence per mile, assuming current petrol prices and real-world MPG. Road tax (VED) for a 2021 model with 163 g/km CO2 will be £190 per year. Insurance costs will be moderate to high, as it's a premium brand SUV, so definitely get a few quotes based on your postcode and driving history.

## Key stats

- **Fuel Type**: Petrol
- **Horsepower**: 150 hp
- **Mpg**: 30-34 mpg
- **Reliability Score**: Good
- **Safety Rating**: 5-star Euro NCAP (2018)

## Trim comparison

| Trim | Price new | Price used | Key features |
| --- | --- | --- | --- |
| Sport | £30,500 | £16,500 | 18-inch alloy wheels; LED headlights; Audi MMI Navigation Plus |
| S Line | £33,500 | £18,500 | 19-inch '5-twin-spoke dynamic' alloy wheels; S Line exterior styling (sportier bumpers, side skirts); Sport suspension |
| Black Edition | £36,500 | £20,500 | 20-inch '5-twin-spoke module' alloy wheels in matt grey; Black styling pack (grille, window surrounds, roof rails); Full leather upholstery |

## Depreciation forecast

| Year | Estimated value | Retention |
| --- | --- | --- |
| 2026 | £19,783 | 100% |
| 2027 | £18,299 | 92.5% |
| 2028 | £16,926 | 85.6% |
| 2029 | £15,826 | 79.9% |
| 2030 | £14,798 | 74.8% |

Buying a 2021 Q3 in 2026 means you're getting a car that's already taken the biggest hit in depreciation. The initial steep drop from new has passed, and while it will continue to lose value, the annual percentage loss will be much slower. This makes it a smart buy for retaining more of your investment over the next few years compared to buying a newer model.

Total value lost since new: 25.1%.

## Alternatives to consider

- [BMW X1](https://autoscout.fyi/cars/bmw-x1.md)
- [Mercedes-Benz GLA](https://autoscout.fyi/cars/mercedes-gla.md)
- [Volvo XC40](https://autoscout.fyi/cars/volvo-xc40.md)

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