2021 Audi A3
1.5 TFSI 35 S Line S tronic FWD Euro 6 (s/s) 5dr Sportback (148 bhp)
£18,899
Fair price: within 8% of the typical £19,788 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
- 27,101 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 27,101 miles, approximately 15,700 below the typical mileage for its age. Its asking price of £18,899 is £889 below our estimate of £19,788. To estimate its market asking price, we analyse UK dealer adverts for 6,484 Audi A3 cars across different ages and specifications. It first appeared in our advert records 4 days ago. MOT records show an expiry date of 21 July 2027, and the latest recorded mileage is consistent with the advert. The seller is Stratstone Amersham Audi, based in Amersham.
Stock data from 19 October 2026.
Price history
First seen on 16 October 2026, 4 days ago. Advert duration calculated on 20 October 2026.
| Date observed | Asking price |
|---|---|
| 16 October 2026 | £18,899 |
| 19 October 2026 | £18,899 |
Price and mileage comparison
Estimated market asking price: £19,788. The asking price is £889 below 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 15,700 miles lower than typical for a 2021 Audi A3.
The advertised mileage is consistent with the last MOT reading.
MOT
MOT valid until 21 July 2027. 26,408 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 27,101 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
- 2024 Audi A3, 26,200 miles, £14,489, £4,676 under typical, Bradford
- 2023 Audi A3, 7,500 miles, £16,989, £5,178 under typical, Keighley
- 2024 Audi A3, 18,500 miles, £17,450, £5,086 under typical, Halifax
Dealer
Stratstone Amersham Audi, Amersham. Across the dealer network: 69 branches, 4,817 cars for sale.
Dealer postcode: HP7 9JD.
Dealer opening hours
- Monday
- 08:00-18:00
- Tuesday
- 08:00-18:00
- Wednesday
- 08:00-18:00
- Thursday
- 08:00-18:00
- Friday
- 08:00-18:00
- Saturday
- 08:30-17:30
- Sunday
- 10:00-16:00
