2021 Audi A3
1.4 S Line S tronic FWD Euro 6 5dr
£20,990
Fair price: within 8% of the typical £20,065 for this model, age and mileage, drawing on 6,484 adverts of this make and model.
Overview
- Make
- Audi
- Model
- A3
- Trim
- S LINE
- Version
- 1.4 S Line S tronic FWD Euro 6 5dr
- Mileage
- 21,000 miles
- Year
- 2021
- Fuel type
- Petrol Plug-in Hybrid
- Body type
- Hatchback
- Engine
- 1.4 L
- Gearbox
- Automatic
- Seats
- 5
- CO2
- 29 g/km
- Colour
- White
- Doors
- 5
- Driven wheels
- Front Wheel Drive
- Gearbox version
- S tronic
- Engine badge
- TFSIe
- Emissions standard
- Euro 6
About this car
This 2021 Audi A3 S Line is advertised with 21,000 miles on the clock. Our estimated market asking price is £20,065. This car is advertised at £20,990, which is £925 above that figure. Our estimate draws on 6,484 Audi A3 adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We have tracked this advert for 111 days. The advertised mileage is lower than the latest MOT reading of 28,305 miles. Ask the dealer to explain. MOT records show an expiry date of 11 February 2027. It is for sale at Car Sales in New Malden.
Stock data from 19 October 2026.
Price history
First seen on 1 July 2026, 111 days ago. Advert duration calculated on 20 October 2026.
| Date observed | Asking price |
|---|---|
| 1 July 2026 | £20,990 |
| 7 July 2026 | £20,990 |
| 19 October 2026 | £20,990 |
Price and mileage comparison
Estimated market asking price: £20,065. The asking price is £925 above 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 6,484 adverts of this make and model across different ages and specifications.
Advertised mileage is approximately 21,800 miles lower than typical for a 2021 Audi A3.
Mileage concern: the advertised mileage is below the last MOT reading; ask the dealer to explain.
MOT
MOT valid until 11 February 2027. 28,305 miles at the last test.
35 other cars with the same year, trim, gearbox and fuel are for sale from £11,700 to £19,300.
| Asking price | Mileage |
|---|---|
| £11,700 | 111,314 miles |
| £11,850 | 99,572 miles |
| £12,199 | 110,158 miles |
| £12,449 | 77,000 miles |
| £12,700 | 91,000 miles |
These cars have covered 18,021–111,314 miles, compared with 21,000 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 Audi A3 cars for sale · 2021 Audi A3 price guide
Similar cars for less
- 2023 Audi A3, 7,500 miles, £16,989, £5,178 under typical, Keighley
- 2025 Audi A3, 13,000 miles, £19,795, £6,032 under typical, Wakefield
- 2024 Audi A3, 18,500 miles, £17,450, £5,086 under typical, Halifax
Dealer
Car Sales, New Malden. Across the dealer network: 23 cars for sale.
Dealer postcode: KT3 4NS.
Dealer opening hours
- Monday
- 09:30-17:00
- Tuesday
- 09:30-17:00
- Wednesday
- 09:30-17:00
- Thursday
- 09:30-17:00
- Friday
- 09:30-17:00
- Saturday
- 09:30-17:00
- Sunday
- Closed
