2021 Audi A3
1.5 TFSI 35 S Line S tronic FWD Euro 6 (s/s) 5dr Sportback (148 bhp)
£17,456
Fair price: within 8% of the typical £16,945 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
- 1.5 TFSI 35 S Line S tronic FWD Euro 6 (s/s) 5dr Sportback (148 bhp)
- Mileage
- 56,686 miles
- Year
- 2021
- Fuel type
- Petrol Hybrid
- Body type
- Hatchback
- Engine
- 1.5 L
- Gearbox
- Automatic
- Power
- 148 bhp
- Seats
- 5
- CO2
- 135 g/km
- Colour
- Grey
- Doors
- 5
- Driven wheels
- Front Wheel Drive
- Gearbox version
- S tronic
- Engine badge
- TFSI
- Hybrid type
- Mild hybrid
- Emissions standard
- Euro 6
About this car
This 2021 Audi A3 S Line is advertised with 56,686 miles, approximately 13,900 above the typical mileage for its age. At £17,456, it is advertised £511 above our estimated market asking price of £16,945. We use UK dealer asking prices, including 6,484 Audi A3 listings, and account for the car’s age, mileage and specification. Since we first spotted the advert 20 days ago, the asking price has dropped by £75. Its recorded MOT is valid until 19 June 2027, and its advertised mileage is consistent with the latest MOT reading. The seller is Lookers Audi Guildford, based in Guildford.
Stock data from 19 October 2026.
Price history
First seen on 1 October 2026, 20 days ago. Advert duration calculated on 21 October 2026. Net asking-price reduction: £75 from the first recorded £17,531. 1 price reduction recorded, the latest observed on 16 October 2026.
| Date observed | Asking price |
|---|---|
| 1 October 2026 | £17,531 |
| 16 October 2026 | £17,456 |
| 19 October 2026 | £17,456 |
Price and mileage comparison
Estimated market asking price: £16,945. The asking price is £511 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 13,900 miles higher than typical for a 2021 Audi A3.
The advertised mileage is consistent with the last MOT reading.
MOT
MOT valid until 19 June 2027. 55,888 miles at the last test.
97 other cars with the same year, trim, gearbox and fuel are for sale from £11,995 to £21,995.
| Asking price | Mileage |
|---|---|
| £11,995 | 120,530 miles |
| £12,490 | 111,668 miles |
| £12,999 | 57,000 miles |
| £13,490 | 108,000 miles |
| £13,700 | 96,353 miles |
These cars have covered 12,650–120,530 miles, compared with 56,686 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, 35,650 miles, £14,995, £4,878 under typical, Barnet
- 2024 Audi A3, 26,200 miles, £14,489, £4,676 under typical, Bradford
- 2025 Audi A3, 35,874 miles, £15,750, £4,926 under typical, Hadleigh
Dealer
Lookers Audi Guildford, Guildford. Across the dealer network: 144 branches, 6,732 cars for sale.
Dealer postcode: GU1 1RU.
Dealer opening hours
- Monday
- 08:30-18:00
- Tuesday
- 08:30-18:00
- Wednesday
- 08:30-18:00
- Thursday
- 08:30-18:00
- Friday
- 08:30-18:00
- Saturday
- 09:00-17:00
- Sunday
- 11:00-15:00