2020 BMW 3 Series 2.0 320d M Sport

Overview

• Make: BMW
• Model: 3 Series
• Trim: M Sport
• Version: 2.0 320d M Sport Auto 4WD Euro 6 (s/s) 4dr (187 bhp)
• Year: 2020
• Mileage: 52,009 miles
• Fuel: Diesel
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: White
• CO2: 120 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 BMW 3 Series M Sport is advertised with 52,009 miles, approximately 7,600 below the typical mileage for its age. The dealer is asking £20,990, which is £420 above the AskCar estimate of £20,570. To work out the AskCar estimate, we analyse UK dealer adverts for 6,897 BMW 3 Series cars across different ages and specifications. The asking price is now £1,009 lower than when we first recorded the advert 57 days ago. We checked its advertised mileage against the government's MOT record, and they match. It is advertised by Eastern Western Motor Group Grassicks BMW in Perth. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Fair price: £420 (2%) over the AskCar estimate of £20,570.

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 6,897 priced BMW 3 Series adverts across different ages and specifications, as of 5 November 2026.

A 2020 BMW 3 Series with the 2.0 diesel engine is typically advertised at £18,500: the median of the 461 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2020 BMW 3 Series has been on sale for at least 57 days.

Price history

AskCar first saw this advert on 9 September 2026 at £21,999. Its asking price is now £20,990, £1,009 less. The latest price cut was seen on 18 October 2026.

Price changes recorded:

• 9 September 2026: £21,999
• 12 September 2026: £21,998
• 3 October 2026: £21,898
• 18 October 2026: £20,990

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 11 March 2027.

It has had 4 MOTs. The latest, on 5 March 2026, passed.

Advisories at the latest test: front brake pad(s) wearing thin.

Mileage at that test: 49,270 miles, which matches the advertised 52,009 miles.

Advertised mileage is about 7,600 miles lower than the median mileage of a 2020 BMW 3 Series on AskCar.

Similar cars

66 other 2020 BMW 3 Series M Sport 2.0 diesel automatic saloons are for sale at UK dealers, from £9,990 to £23,977, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2020 BMW 3 Series M Sport, 2.0 diesel saloon, blue. Mileage: 50,500 miles. Price: £20,495, £495 less than this car. Dealer: Evolve Motor Company in Newport. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-98d6dfbaae9d
• 2020 BMW 3 Series M Sport, 2.0 diesel saloon, white. Mileage: 54,024 miles. Price: £19,200, £1,790 less than this car. Dealer: Redgate Lodge in Newcastle upon Tyne. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-e6f6fd4a004b
• 2020 BMW 3 Series M Sport, 2.0 diesel saloon, white. Mileage: 49,950 miles. Price: £22,449, £1,459 more than this car. Dealer: Paragon Cars London in Watford. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-18a1ad5e09e1

• The nearest: 2020 BMW 3 Series M Sport, 2.0 diesel saloon, black, under a mile from this car. Mileage: 69,836 miles. Price: £18,998, £1,992 less than this car. Dealer: Arnold Clark Perth Vauxhall / Fiat / Abarth / Jeep / Alfa Romeo / Leapmotor / Vanstore in Perth. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-5bad17350f6a