2023 Audi A4 2.0 TDI S Line
Price: £20,700. Fair price: £462 (2%) under the AskCar estimate of £21,162, our expected asking price for this car from its model, age, mileage and specification, drawing on 1,427 priced Audi A4 adverts on AskCar as of 4 November 2026.
AskCar lists 1,488 used Audi A4 from 972 UK dealerships, as of 4 November 2026.
Overview
- Make: Audi
- Model: A4
- Trim: S Line
- Version: 2.0 TDI S Line S tronic FWD Euro 6 4dr (160 bhp)
- Year: 2023
- Mileage: 31,143 miles
- Fuel: Diesel
- Body: Saloon, 4 doors, 5 seats
- Engine: 2.0 litres, 160 bhp
- Gearbox: Automatic (S tronic)
- Drive: Front-wheel drive
- Colour: Grey
- CO2: 137 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
This 2023 Audi A4 S Line has covered 31,143 miles, around 2,800 more miles than is typical for its age. Priced at £20,700, it is advertised £462 below the AskCar estimate of £21,162. To work out the AskCar estimate, we analyse UK dealer adverts for 1,427 Audi A4 cars across different ages and specifications. It first appeared in our advert records 7 days ago. We checked its advertised mileage against the government's MOT record, and they match. It is for sale at Car Planet Watford in Rickmansworth. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 4 November 2026.
Price
Fair price: £462 (2%) under the AskCar estimate of £21,162.
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 1,427 priced Audi A4 adverts across different ages and specifications, as of 4 November 2026.
A 2023 Audi A4 with the 2.0 diesel engine is typically advertised at £20,800: the median of the 219 for sale on AskCar, as of 4 November 2026.
Time on sale
This 2023 Audi A4 has been on sale for at least 7 days.
Price history
AskCar first saw this advert on 28 October 2026 at £20,700. Its asking price has not changed.
Mileage and MOT
MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 18 August 2027.
It has had one MOT, on 19 August 2026, and passed.
There were no advisories at the latest test.
Mileage at that test: 30,615 miles, which matches the advertised 31,143 miles.
Advertised mileage is about 2,800 miles higher than the median mileage of a 2023 Audi A4 on AskCar.
Similar cars
18 other 2023 Audi A4 S Line 2.0 diesel automatic saloons are for sale at UK dealers, from £19,355 to £31,995, as of 4 November 2026.
The 3 closest to this car in mileage:
- 2023 Audi A4 S Line, 2.0 diesel saloon, grey. Mileage: 31,000 miles. Price: £21,200, £500 more than this car. Dealer: Mon Motors Cardiff Audi in Cardiff. AskCar page: https://askcar.co.uk/car/audi-a4-2023-dd9b03a587f7
- 2023 Audi A4 S Line, 2.0 diesel saloon, black. Mileage: 30,913 miles. Price: £20,800, £100 more than this car. Dealer: Car Planet Watford in Watford. AskCar page: https://askcar.co.uk/car/audi-a4-2023-813ebbe3dad4
- 2023 Audi A4 S Line, 2.0 diesel saloon, grey. Mileage: 30,816 miles. Price: £20,242, £458 less than this car. Dealer: Carbase Bristol in Bristol. AskCar page: https://askcar.co.uk/car/audi-a4-2023-2b552d168271
Browse all Audi A4 cars for sale · 2023 Audi A4 price guide
More like this
- Used Audi A4 S Line prices
- Used automatic Audi A4 for sale
- Used diesel Audi A4 for sale
- Used Audi A4 for sale near Watford
Photos
38 photos of this car are on its AskCar page.
As of 4 November 2026, AskCar lists 592,552 cars and vans from 12,964 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.