2020 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: 2020
• Mileage: 36,556 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

At 36,556 miles, this 2020 Audi A5 S Line has covered about 18,000 fewer miles than other 2020 Audi A5 cars. The dealer is asking £19,850, which is £1,223 below the AskCar estimate of £21,073. To work out the AskCar estimate, we analyse UK dealer adverts for 1,830 Audi A5 cars across different ages and specifications. This car was first seen in our listings data 10 days ago. Its advertised mileage matches the government's MOT record. It is advertised by Car Planet Watford in Rickmansworth. 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: £1,223 (5%) under the AskCar estimate of £21,073.

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 2020 Audi A5 with the 2.0 diesel engine is typically advertised at £18,000: the median of the 94 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2020 Audi A5 has been on sale for at least 10 days.

Price history

AskCar first saw this advert on 23 October 2026 at £19,850. 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 26 December 2026.

It has had 4 MOTs. The latest, on 16 December 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 34,686 miles, which matches the advertised 36,556 miles.

Advertised mileage is about 18,000 miles lower than the median mileage of a 2020 Audi A5 on AskCar.

Similar cars

21 other 2020 Audi A5 S Line 2.0 diesel automatic hatchbacks are for sale at UK dealers, from £13,999 to £21,993, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2020 Audi A5 S Line, 2.0 diesel hatchback, blue. Mileage: 37,518 miles. Price: £19,498, £352 less than this car. Dealer: Arnold Clark West Calder Vauxhall in West Calder. AskCar page: https://askcar.co.uk/car/audi-a5-2020-025510c2aa5e
• 2020 Audi A5 S Line, 2.0 diesel hatchback, black. Mileage: 40,000 miles. Price: £19,000, £850 less than this car. Dealer: The Car Shop in Birmingham. AskCar page: https://askcar.co.uk/car/audi-a5-2020-59cdbabc3485
• 2020 Audi A5 S Line, 2.0 diesel hatchback, white. Mileage: 31,670 miles. Price: £20,499, £649 more than this car. Dealer: H.P.L. Motors - Oldham (Greater Manchester) in Oldham. AskCar page: https://askcar.co.uk/car/audi-a5-2020-0a4abac9d5ca

• The nearest: 2020 Audi A5 S Line, 2.0 diesel hatchback, grey, 9 miles from this car. Mileage: 72,000 miles. Price: £16,995, £2,855 less than this car. Dealer: Heathrow Trade Cars in Southall. AskCar page: https://askcar.co.uk/car/audi-a5-2020-b231c79ce797