2020 BMW 3 Series 3.0 330d M Sport

Overview

• Make: BMW
• Model: 3 Series
• Trim: M Sport
• Version: 3.0 330d M Sport Auto RWD Euro 6 4dr (261 bhp)
• Year: 2020
• Mileage: 42,102 miles
• Fuel: Diesel
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres, 261 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: White
• CO2: 150 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 BMW 3 Series M Sport is advertised with 42,102 miles, approximately 17,900 below the typical mileage for its age. The dealer is asking £20,352, which is £2,585 below the AskCar estimate of £22,937. To work out the AskCar estimate, we analyse UK dealer adverts for 6,902 BMW 3 Series cars across different ages and specifications. Since we first spotted the advert 47 days ago, the asking price has dropped by £671. The government's MOT record matches its advertised mileage. It is for sale at Carsa Towcester in West Northamptonshire. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 6 November 2026.

How we estimate prices and check cars

Price

Good value: £2,585 (11%) under the AskCar estimate of £22,937.

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 6,902 priced BMW 3 Series adverts across different ages and specifications, as of 6 November 2026.

A 2020 BMW 3 Series with the 3.0 diesel engine is typically advertised at £28,000: the median of the 63 for sale on AskCar, as of 6 November 2026.

Time on sale

This 2020 BMW 3 Series has been on sale for at least 47 days.

Price history

AskCar first saw this advert on 20 September 2026 at £21,023. Its asking price is now £20,352, £671 less. The latest price cut was seen on 4 November 2026.

Price changes recorded:

• 20 September 2026: £21,023
• 21 September 2026: £21,139
• 22 September 2026: £21,138
• 23 September 2026: £21,034
• 6 October 2026: £21,373
• 16 October 2026: £21,213
• 23 October 2026: £20,819
• 28 October 2026: £20,600
• 3 November 2026: £20,452
• 4 November 2026: £20,352

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 29 June 2027.

It failed its MOT on 4 June 2026 (nearside rear tyre tread depth below requirements of 1.6mm) and passed later the same day.

Advisories at the latest test: engine cover/under-trays fitted.

Mileage at that test: 40,107 miles, which matches the advertised 42,102 miles.

Advertised mileage is about 17,900 miles lower than the median mileage of a 2020 BMW 3 Series on AskCar.

Similar cars

8 other 2020 BMW 3 Series M Sport 3.0 diesel automatic saloons are for sale at UK dealers, from £17,695 to £29,895, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2020 BMW 3 Series M Sport, 3.0 diesel saloon, black. Mileage: 35,470 miles. Price: £29,895, £9,543 more than this car. Dealer: Group 1 Cambridge BMW in Cambridge. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-d43f3d547b93
• 2020 BMW 3 Series M Sport, 3.0 diesel saloon, black. Mileage: 33,890 miles. Price: £22,499, £2,147 more than this car. Dealer: Motorpoint Edinburgh in Edinburgh. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-6523380545b1
• 2020 BMW 3 Series M Sport, 3.0 diesel saloon, black. Mileage: 58,420 miles. Price: £20,995, £643 more than this car. Dealer: V12 Sports & Classics Ltd -Worksop in Worksop. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-a89ec99cc9d4