2026 Audi A3 1.5 TFSI S Line
Price: £28,250. Fair price: £838 (2%) under the AskCar estimate of £29,088, our expected asking price for this car from its model, age, mileage and specification, drawing on 6,763 priced Audi A3 adverts on AskCar as of 14 November 2026.
AskCar lists 6,922 used Audi A3 from 2,322 UK dealerships, as of 14 November 2026.
Overview
- Make: Audi
- Model: A3
- Trim: S Line
- Version: 1.5 TFSI S Line S tronic FWD Euro 6 (s/s) 4dr
- Year: 2026
- Mileage: 4,154 miles
- Fuel: Petrol
- Body: Saloon, 4 doors, 5 seats
- Engine: 1.5 litres
- Gearbox: Automatic (S tronic)
- Drive: Front-wheel drive
- Colour: Grey
- CO2: 121 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
The advertised mileage for this 2026 Audi A3 S Line is 4,154 miles. Its asking price of £28,250 is £838 below the AskCar estimate of £29,088. The AskCar estimate draws on 6,763 Audi A3 adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We have tracked this advert for 1 day. The seller is Mon Motors Cardiff Audi, based in Cardiff. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 14 November 2026.
Mon Motors Cardiff Audi is rated 4.6 out of 5 on Google.
Price
Fair price: £838 (2%) under the AskCar estimate of £29,088.
The AskCar estimate is our expected asking price for this car. It uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It is an advertised price, not a confirmed sale price.
It draws on 6,763 priced Audi A3 adverts across different ages and specifications, as of 14 November 2026.
A 2026 Audi A3 with the 1.5 petrol engine is typically advertised at £29,600: the median of the 885 for sale on AskCar, as of 14 November 2026.
Time on sale
AskCar first saw this 2026 Audi A3 advertised 1 day ago. About 3 in 10 of 2026 Audi A3 cars are gone from sale within a month of being advertised: 301 of the 962 first advertised between 14 July 2026 and 11 October 2026.
Price history
AskCar first saw this advert on 13 November 2026 at £28,250. Its asking price has not changed.
Mileage and MOT
MOT: first test not yet due.
Advertised mileage is about 1,200 miles higher than the median mileage of a 2026 Audi A3 on AskCar.
Similar cars
59 other 2026 Audi A3 S Line 1.5 petrol automatic saloons are for sale at UK dealers, from £26,495 to £36,000, as of 14 November 2026.
The 3 closest to this car in mileage:
- 2026 Audi A3 S Line, 1.5 petrol saloon, blue. Mileage: 4,020 miles. Price: £29,899, £1,649 more than this car. Dealer: Eastern Western Motor Group Audi Stirling in Stirling. AskCar page: https://askcar.co.uk/car/audi-a3-2026-424d765f1a0c
- 2026 Audi A3 S Line, 1.5 petrol saloon, white. Mileage: 4,000 miles. Price: £29,899, £1,649 more than this car. Dealer: Eastern Western Motor Group Audi Edinburgh in Edinburgh. AskCar page: https://askcar.co.uk/car/audi-a3-2026-44f0e84fa6d2
- 2026 Audi A3 S Line, 1.5 petrol saloon, red. Mileage: 4,389 miles. Price: £29,755, £1,505 more than this car. Dealer: Sinclair Group in Bridgend. AskCar page: https://askcar.co.uk/car/audi-a3-2026-9f0f673340e8
- The nearest: 2026 Audi A3 S Line, 1.5 petrol saloon, blue, under a mile from this car. Mileage: 5,375 miles. Price: £27,250, £1,000 less than this car. Dealer: Mon Motors Cardiff Audi in Cardiff. AskCar page: https://askcar.co.uk/car/audi-a3-2026-9cb6e99c2645
Browse all Audi A3 cars for sale · 2026 Audi A3 price guide
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As of 14 November 2026, AskCar lists 600,711 cars and vans from 12,770 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.