2021 Audi A5 2.0 TDI S Line

Overview

• Make: Audi
• Model: A5
• Trim: S Line
• Version: 2.0 TDI 35 S Line S tronic FWD Euro 6 (s/s) 5dr Sportback (161 bhp)
• Year: 2021
• Mileage: 17,325 miles
• Fuel: Diesel, mild hybrid
• Body: Hatchback, 5 doors, 5 seats
• Engine: 2.0 litres, 161 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: White
• CO2: 137 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Audi A5 S Line has covered 17,325 miles, around 33,700 fewer miles than is typical for its age. Its asking price of £22,990 is £777 below the AskCar estimate of £23,767. To work out the AskCar estimate, we analyse UK dealer adverts for 1,830 Audi A5 cars across different ages and specifications. We have tracked this advert for 47 days. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is for sale at Riverside SEAT CUPRA in Hull. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Fair price: £777 (3%) under the AskCar estimate of £23,767.

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 1,830 priced Audi A5 adverts across different ages and specifications, as of 2 November 2026.

A 2021 Audi A5 with the 2.0 diesel engine is typically advertised at £19,700: the median of the 119 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2021 Audi A5 has been on sale for at least 47 days.

Price history

AskCar first saw this advert on 16 September 2026 at £22,990. 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 2 November 2026: valid until 14 September 2027.

It has had 3 MOTs. The latest, on 14 September 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 17,189 miles, which matches the advertised 17,325 miles.

Advertised mileage is about 33,700 miles lower than the median mileage of a 2021 Audi A5 on AskCar.

Similar cars

30 other 2021 Audi A5 S Line 2.0 diesel automatic hatchbacks are for sale at UK dealers, from £13,995 to £21,995, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A5 S Line, 2.0 diesel hatchback, white. Mileage: 19,982 miles. Price: £19,995, £2,995 less than this car. Dealer: Oakwood Specialist Cars in Whitley Bay. AskCar page: https://askcar.co.uk/car/audi-a5-2021-7fae677e692d
• 2021 Audi A5 S Line, 2.0 diesel hatchback, white. Mileage: 33,094 miles. Price: £20,440, £2,550 less than this car. Dealer: Evans Halshaw Citroen Hull in Kingston upon Hull. AskCar page: https://askcar.co.uk/car/audi-a5-2021-70c0b06044e9
• 2021 Audi A5 S Line, 2.0 diesel hatchback, white. Mileage: 34,684 miles. Price: £19,640, £3,350 less than this car. Dealer: Evans Halshaw Renault Edinburgh in Edinburgh. AskCar page: https://askcar.co.uk/car/audi-a5-2021-7540e09bb445

• The nearest: 2021 Audi A5 S Line, 2.0 diesel hatchback, black, under a mile from this car. Mileage: 37,977 miles. Price: £19,890, £3,100 less than this car. Dealer: Evans Halshaw Ford Hull East in Kingston upon Hull. AskCar page: https://askcar.co.uk/car/audi-a5-2021-1cb702541806