2021 Audi A3

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

42,342 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 42,342 miles on the clock. Its asking price of £20,000 is £1,718 above our estimate of £18,282. We use UK dealer asking prices, including 6,484 Audi A3 listings, and account for the car’s age, mileage and specification. This car was first seen in our listings data 12 days ago. MOT records show an expiry date of 3 November 2026, and the latest recorded mileage is consistent with the advert. The seller is Sytner Group Nottingham Audi, based in Nottingham.

Stock data from 19 October 2026.

How we estimate prices and check cars

Price and mileage comparison

Estimated market asking price: £18,282. The asking price is £1,718 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 400 miles lower than typical for a 2021 Audi A3.

The advertised mileage is consistent with the last MOT reading.