2021 Audi A3

1.4 13kWh TFSIe 45 S Line Competition S tronic FWD Euro 6 (s/s) 5dr Sportback (242 bhp)

£18,650

Fair price: within 8% of the typical £18,981 for this model, age and mileage, drawing on 6,542 adverts of this make and model.

Overview

Make
Audi
Model
A3
Trim
S LINE COMPETITION
Version
1.4 13kWh TFSIe 45 S Line Competition S tronic FWD Euro 6 (s/s) 5dr Sportback (242 bhp)
Mileage
41,972 miles
Year
2021
Fuel type
Petrol Plug-in Hybrid
Body type
Hatchback
Engine
1.4 L
Gearbox
Automatic
Power
242 bhp
Seats
5
CO2
30 g/km
Colour
Yellow
Doors
5
Driven wheels
Front Wheel Drive
Gearbox version
S tronic
Engine badge
TFSIe
Hybrid type
Plug-in hybrid
Emissions standard
Euro 6

About this car

This 2021 Audi A3 S Line Competition has covered 41,972 miles. The dealer is asking £18,650, which is £331 below our market estimate of £18,981. We use UK dealer asking prices, including 6,542 Audi A3 listings, and account for the car’s age, mileage and specification. Since we first spotted the advert 8 days ago, the asking price has dropped by £250. Its recorded MOT is valid until 22 November 2026, and its advertised mileage is consistent with the latest MOT reading. The seller is Carsa Cannock, based in Cannock Chase.

Stock data from 21 October 2026.

How we estimate prices and check cars

Price history

First seen on 14 October 2026, 8 days ago. Advert duration calculated on 22 October 2026. Net asking-price reduction: £250 from the first recorded £18,900. 1 price reduction recorded, the latest observed on 21 October 2026.

Recorded asking prices
Date observedAsking price
14 October 2026£18,900
21 October 2026£18,650

Price and mileage comparison

Estimated market asking price: £18,981. The asking price is £331 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 6,542 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 1,100 miles lower than typical for a 2021 Audi A3.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 22 November 2026. 41,972 miles at the last test.

7 other cars with the same year, trim, gearbox and fuel are for sale from £13,000 to £22,995.

Other matching cars (up to five, cheapest first)
Asking priceMileage
£13,000113,000 miles
£16,99558,778 miles
£17,44069,301 miles
£18,61042,184 miles
£18,75010,000 miles

These cars have covered 10,000–113,000 miles, compared with 41,972 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

How to contact the dealer, its opening hours and the cheaper cars like this one are on this AskCar page.

Vehicle photos