2021 Audi A3

1.5 TFSI 35 S Line S tronic FWD Euro 6 (s/s) 4dr (148 bhp)

£16,845

Fair price: within 8% of the typical £16,795 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) 4dr (148 bhp)
Mileage
60,604 miles
Year
2021
Fuel type
Petrol Hybrid
Body type
Saloon
Engine
1.5 L
Gearbox
Automatic
Power
148 bhp
Seats
5
CO2
131 g/km
Colour
Grey
Doors
4
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 has covered 60,604 miles, around 17,800 more than typical for its age. Our estimated market asking price is £16,795. This car is advertised at £16,845, which is £50 above that figure. To estimate its market asking price, we analyse UK dealer adverts for 6,484 Audi A3 cars across different ages and specifications. Since we first spotted the advert 38 days ago, the asking price has dropped by £1,144. Its recorded MOT is valid until 27 November 2026, and its advertised mileage is consistent with the latest MOT reading. The seller is JCT600 Boston Audi, based in Boston.

Stock data from 19 October 2026.

How we estimate prices and check cars

Price history

First seen on 12 September 2026, 38 days ago. Advert duration calculated on 20 October 2026. Net asking-price reduction: £1,144 from the first recorded £17,989. 4 price reductions recorded, the latest observed on 14 October 2026.

Recorded asking prices
Date observedAsking price
18 September 2026£17,989
19 September 2026£17,497
24 September 2026£17,397
7 October 2026£17,252
14 October 2026£16,766
16 October 2026£16,845
19 October 2026£16,845

Price and mileage comparison

Estimated market asking price: £16,795. The asking price is £50 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 17,800 miles higher than typical for a 2021 Audi A3.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 27 November 2026. 51,232 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.

Other matching cars (up to five, cheapest first)
Asking priceMileage
£11,995120,530 miles
£12,490111,668 miles
£12,99957,000 miles
£13,490108,000 miles
£13,70096,353 miles

These cars have covered 12,650–120,530 miles, compared with 60,604 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

Dealer

JCT600 Boston Audi, Boston. Across the dealer network: 19 branches, 2,683 cars for sale.

Dealer postcode: PE21 7QS.

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
08:30-17:00
Sunday
12:00-16:00

Vehicle photos