2021 Audi A3
1.5 TFSI 35 S Line S tronic FWD Euro 6 (s/s) 5dr Sportback (148 bhp)
£18,985
Fair price: within 8% of the typical £18,889 for this model, age and mileage, drawing on 6,532 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
- 36,000 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
- Blue
- 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
With 36,000 miles on the clock, this 2021 Audi A3 S Line has done roughly 7,000 fewer miles than a typical 2021 Audi A3. The dealer is asking £18,985, which is £96 above our market estimate of £18,889. To estimate its market asking price, we analyse UK dealer adverts for 6,532 Audi A3 cars across different ages and specifications. This car was first seen in our listings data 18 days ago. The latest MOT record shows an expiry date of 29 June 2027, with the advertised mileage consistent with the recorded reading. You can find this car at Lonsdale in Basingstoke.
Stock data from 20 October 2026.
Price history
First seen on 3 October 2026, 18 days ago. Advert duration calculated on 21 October 2026.
| Date observed | Asking price |
|---|---|
| 3 October 2026 | £18,985 |
| 20 October 2026 | £18,985 |
Price and mileage comparison
Estimated market asking price: £18,889. The asking price is £96 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 6,532 adverts of this make and model across different ages and specifications.
Advertised mileage is approximately 7,000 miles lower than typical for a 2021 Audi A3.
The advertised mileage is consistent with the last MOT reading.
MOT
MOT valid until 29 June 2027. 34,847 miles at the last test.
98 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 |
| £12,995 | 108,000 miles |
| £12,999 | 57,000 miles |
| £13,290 | 108,000 miles |
These cars have covered 11,900–120,530 miles, compared with 36,000 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, 35,650 miles, £14,995, £4,808 under typical, Barnet
- 2025 Audi A3, 35,874 miles, £15,750, £4,957 under typical, Hadleigh
- 2024 Audi A3, 26,200 miles, £14,489, £4,455 under typical, Bradford
Dealer
Lonsdale, Basingstoke. Across the dealer network: 31 cars for sale.
Dealer postcode: RG21 4HG.
Dealer opening hours
- Monday
- Closed
- 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
