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: 60,000 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: Grey
• CO2: 137 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Audi A5 S Line is advertised with 60,000 miles, approximately 9,000 above the typical mileage for its age. Its asking price of £18,989 is £211 below the AskCar estimate of £19,200. The AskCar estimate uses 1,830 UK dealer adverts for the Audi A5, with adjustments for age, mileage, trim, engine and other specifications. This car was first seen in our listings data 2 days ago. The government's MOT record matches its advertised mileage. It is for sale at Bluehawk Automotive in Hounslow. 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: £211 (1%) under the AskCar estimate of £19,200.

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

AskCar first saw this 2021 Audi A5 advertised 2 days ago. 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 31 October 2026 at £18,989. 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 19 November 2026.

It failed its MOT on 20 November 2025 (rear registration plate inscription illegible) and passed later the same day.

There were no advisories at the latest test.

Mileage at that test: 58,398 miles, which matches the advertised 60,000 miles.

Advertised mileage is about 9,000 miles higher 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 £22,990, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A5 S Line, 2.0 diesel hatchback, white. Mileage: 57,249 miles. Price: £17,499, £1,490 less than this car. Dealer: Nexa Motor Group in Southampton. AskCar page: https://askcar.co.uk/car/audi-a5-2021-816ff2fa2033
• 2021 Audi A5 S Line, 2.0 diesel hatchback, grey. Mileage: 64,000 miles. Price: £18,950, the same price as this car. Dealer: United Car Sales in Sheffield. AskCar page: https://askcar.co.uk/car/audi-a5-2021-8107d34f4fc4
• 2021 Audi A5 S Line, 2.0 diesel hatchback, white. Mileage: 54,000 miles. Price: £18,999, the same price as this car. Dealer: A & S Cars in Bishop's Stortford. AskCar page: https://askcar.co.uk/car/audi-a5-2021-38ce2226d3bb

• The nearest: 2021 Audi A5 S Line, 2.0 diesel hatchback, white, 12 miles from this car. Mileage: 48,785 miles. Price: £19,250, £261 more than this car. Dealer: Car Planet Watford in Watford. AskCar page: https://askcar.co.uk/car/audi-a5-2021-d131515fdce8