2020 BMW 3 Series 2.0 320i M Sport

Overview

• Make: BMW
• Model: 3 Series
• Trim: M Sport
• Version: 2.0 320i M Sport Auto RWD Euro 6 (s/s) 4dr (181 bhp)
• Year: 2020
• Mileage: 35,370 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 146 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 BMW 3 Series M Sport is advertised with 35,370 miles, approximately 24,200 below the typical mileage for its age. The dealer is asking £20,130, which is £1,237 below the AskCar estimate of £21,367. To work out the AskCar estimate, we analyse UK dealer adverts for 6,897 BMW 3 Series cars across different ages and specifications. We first saw this car advertised 6 days ago. Its asking price has since fallen by £240. The government's MOT record matches its advertised mileage. You can find this car at Big Motoring World Enfield in Waltham Cross. 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: £1,237 (5%) under the AskCar estimate of £21,367.

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 petrol engine is typically advertised at £18,500: the median of the 461 for sale on AskCar, as of 5 November 2026.

Time on sale

AskCar first saw this 2020 BMW 3 Series advertised 6 days ago. About half of 2020 BMW 3 Series cars are gone from sale within a month of being advertised: 334 of the 699 first advertised between 7 July 2026 and 2 October 2026.

Price history

AskCar first saw this advert on 30 October 2026 at £20,370. Its asking price is now £20,130, £240 less. The latest price cut was seen on 4 November 2026.

Price changes recorded:

• 30 October 2026: £20,370
• 31 October 2026: £20,350
• 3 November 2026: £20,140
• 4 November 2026: £20,130

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 27 September 2027.

It has had 5 MOTs. The latest, on 28 September 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 35,174 miles, which matches the advertised 35,370 miles.

Advertised mileage is about 24,200 miles lower than the median mileage of a 2020 BMW 3 Series on AskCar.

Similar cars

98 other 2020 BMW 3 Series M Sport 2.0 petrol automatic saloons are for sale at UK dealers, from £12,999 to £25,995, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2020 BMW 3 Series M Sport, 2.0 petrol saloon, white. Mileage: 35,880 miles. Price: £20,350, £220 more than this car. Dealer: Group 1 Brighton MINI in Brighton and Hove. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-2d762c299bc6
• 2020 BMW 3 Series M Sport, 2.0 petrol saloon, grey. Mileage: 36,000 miles. Price: £24,995, £4,865 more than this car. Dealer: Alpine Performance Cars in Hinckley. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-02c43223d72f
• 2020 BMW 3 Series M Sport, 2.0 petrol saloon, orange. Mileage: 36,069 miles. Price: £22,690, £2,560 more than this car. Dealer: Group 1 Southend BMW in Southend-on-Sea. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-f372b2c9e286

• The nearest: 2020 BMW 3 Series M Sport, 2.0 petrol saloon, white, under a mile from this car. Mileage: 24,199 miles. Price: £22,900, £2,770 more than this car. Dealer: Big Motoring World Enfield in Enfield. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-c53dce1ec6e8