2021 Audi A3

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

42,184 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

Grey

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 42,184 miles. At £18,430, it is advertised £825 below our estimated market asking price of £19,255. 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 13 days ago, the asking price has dropped by £190. MOT records show an expiry date of 5 October 2027, and the latest recorded mileage is consistent with the advert. You can find this car at Big Motoring World Blue Bell Hill in Chatham.

Stock data from 19 October 2026.

How we estimate prices and check cars

Price and mileage comparison

Estimated market asking price: £19,255. The asking price is £825 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 600 miles lower than typical for a 2021 Audi A3.

The advertised mileage is consistent with the last MOT reading.