2021 Audi A5 2.0 TFSI S Line

Overview

• Make: Audi
• Model: A5
• Trim: S Line
• Version: 2.0 TFSI 35 S Line S tronic FWD Euro 6 (s/s) 5dr Sportback (148 bhp)
• Year: 2021
• Mileage: 39,083 miles
• Fuel: Petrol, mild hybrid
• Body: Hatchback, 5 doors, 5 seats
• Engine: 2.0 litres, 148 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Grey
• CO2: 153 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 39,083 miles on the clock, this 2021 Audi A5 S Line has done roughly 11,000 fewer miles than a typical 2021 Audi A5. The dealer is asking £21,500, which is £1,122 above the AskCar estimate of £20,378. To work out the AskCar estimate, we analyse UK dealer adverts for 1,865 Audi A5 cars across different ages and specifications. The dealer may accept less. This car has been on sale for at least 116 days. We checked its advertised mileage against the government's MOT record, and they match. You can find this car at Jack Bygraves in Biggleswade. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,122 (5%) over the AskCar estimate of £20,378.

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 1,865 priced Audi A5 adverts across different ages and specifications, as of 4 November 2026.

A 2021 Audi A5 with the 2.0 petrol engine is typically advertised at £19,700: the median of the 128 for sale on AskCar, as of 4 November 2026.

Time on sale

The dealer may accept less. This 2021 Audi A5 has been on sale for at least 116 days. About half of 2021 Audi A5 cars are gone from sale within a month of being advertised: 89 of the 167 first advertised between 8 July 2026 and 1 October 2026.

Price history

AskCar first saw this advert on 11 July 2026 at £21,950. Its asking price is now £21,500, £450 less.

Price changes recorded:

• 15 July 2026: £21,950
• 8 August 2026: £21,500
• 28 August 2026: £20,950
• 31 August 2026: £21,500

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 30 June 2027.

It has had 4 MOTs. The latest, on 15 June 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 38,804 miles, which matches the advertised 39,083 miles.

Advertised mileage is about 11,000 miles lower than the median mileage of a 2021 Audi A5 on AskCar.

Similar cars

19 other 2021 Audi A5 S Line 2.0 petrol automatic hatchbacks are for sale at UK dealers, from £14,600 to £25,595, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2021 Audi A5 S Line, 2.0 petrol hatchback, black. Mileage: 42,000 miles. Price: £19,333, £2,167 less than this car. Dealer: Group 1 Automotive Stockport Audi in Stockport. AskCar page: https://askcar.co.uk/car/audi-a5-2021-a54a853e7014
• 2021 Audi A5 S Line, 2.0 petrol hatchback, grey. Mileage: 35,990 miles. Price: £21,998, £498 more than this car. Dealer: Arnold Clark Stafford Motorstore / BYD / Vanstore in Stafford. AskCar page: https://askcar.co.uk/car/audi-a5-2021-c2a98cee8d43
• 2021 Audi A5 S Line, 2.0 petrol hatchback, grey. Mileage: 30,989 miles. Price: £21,990, £490 more than this car. Dealer: Agnew Group Portadown Audi in Portadown. AskCar page: https://askcar.co.uk/car/audi-a5-2021-9e0b56d63e73

• The nearest: 2021 Audi A5 S Line, 2.0 petrol hatchback, black, 18 miles from this car. Mileage: 60,109 miles. Price: £21,590, £90 more than this car. Dealer: Quality Part X Dunstable in Dunstable. AskCar page: https://askcar.co.uk/car/audi-a5-2021-d8a8a934f8e9