2021 Audi A5 2.0 TDI S Line

Overview

• Make: Audi
• Model: A5
• Trim: S Line
• Version: 2.0 TDI S Line S tronic FWD Euro 6 2dr (160 bhp)
• Year: 2021
• Mileage: 31,564 miles
• Fuel: Diesel, mild hybrid
• Body: Coupe, 2 doors, 4 seats
• Engine: 2.0 litres, 160 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: White
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Audi A5 S Line has covered 31,564 miles, around 19,400 fewer miles than is typical for its age. The dealer is asking £19,995, which is £1,606 below the AskCar estimate of £21,601. To work out the AskCar estimate, we analyse UK dealer adverts for 1,830 Audi A5 cars across different ages and specifications. The dealer may accept less. This car has been on sale for at least 124 days, and its asking price is down £1,498. It is for sale at Sam Performance in Rochdale. 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: £1,606 (7%) under the AskCar estimate of £21,601.

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

The dealer may accept less. This 2021 Audi A5 has been on sale for at least 124 days, and its asking price has been cut by £1,498. About half of 2021 Audi A5 cars are gone from sale within a month of being advertised: 84 of the 157 first advertised between 8 July 2026 and 29 September 2026.

Price history

AskCar first saw this advert on 1 July 2026 at £21,493. Its asking price is now £19,995, £1,498 less. The latest price cut was seen on 31 October 2026.

Price changes recorded:

• 1 July 2026: £21,493
• 1 August 2026: £20,495
• 31 October 2026: £19,995

Mileage and MOT

Advertised mileage is about 19,400 miles lower than the median mileage of a 2021 Audi A5 on AskCar.

Similar cars

11 other 2021 Audi A5 S Line 2.0 diesel automatic coupes are for sale at UK dealers, from £16,500 to £22,299, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A5 S Line, 2.0 diesel coupe, blue. Mileage: 34,576 miles. Price: £20,499, £504 more than this car. Dealer: John Clark Motor Group Aberdeen Audi in Aberdeen. AskCar page: https://askcar.co.uk/car/audi-a5-2021-5b688d7dd2ba
• 2021 Audi A5 S Line, 2.0 diesel coupe, grey. Mileage: 28,160 miles. Price: £22,299, £2,304 more than this car. Dealer: Fords Of Winsford Car Supermarket in Winsford. AskCar page: https://askcar.co.uk/car/audi-a5-2021-2561179240bb
• 2021 Audi A5 S Line, 2.0 diesel coupe, white. Mileage: 35,890 miles. Price: £20,950, £955 more than this car. Dealer: Murison Cars Rosehill in Aberdeen. AskCar page: https://askcar.co.uk/car/audi-a5-2021-4a1fc41fa6d1

• The nearest: 2021 Audi A5 S Line, 2.0 diesel coupe, grey, 24 miles from this car. Mileage: 43,176 miles. Price: £18,999, £996 less than this car. Dealer: Bridgend Motor Group in Morley. AskCar page: https://askcar.co.uk/car/audi-a5-2021-38e8e15d10aa