2020 BMW 3 Series 3.0 M340i Sport

Overview

• Make: BMW
• Model: 3 Series
• Trim: Sport
• Version: 3.0 M340i Sport Auto 4WD Euro 6 4dr (368 bhp)
• Year: 2020
• Mileage: 24,728 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres, 368 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Grey
• CO2: 185 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 24,728 miles on the clock, this 2020 BMW 3 Series Sport has done roughly 35,300 fewer miles than a typical 2020 BMW 3 Series. The AskCar estimate for this car is £35,104. It is priced at £33,985, which is £1,119 below that estimate. The AskCar estimate uses UK dealer asking prices, including 6,902 BMW 3 Series adverts, and accounts for the car’s age, mileage and specification. We first saw this car advertised 30 days ago. Its asking price has since fallen by £505. Our latest MOT record expired on 24 September 2026. Check the current position with the dealer. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Stratstone Bmw Doncaster, based in Doncaster. 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

Fair price: £1,119 (3%) under the AskCar estimate of £35,104.

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 petrol 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 30 days.

Price history

AskCar first saw this advert on 7 October 2026 at £34,490. Its asking price is now £33,985, £505 less. The latest price cut was seen on 27 October 2026.

Price changes recorded:

• 7 October 2026: £34,490
• 15 October 2026: £34,790
• 16 October 2026: £34,690
• 22 October 2026: £33,990
• 27 October 2026: £33,985

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: the latest record we hold ran out on 24 September 2026; ask the dealer for the current MOT.

It has had 4 MOTs. The latest, on 2 October 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 24,728 miles, which matches the advertised 24,728 miles.

Advertised mileage is about 35,300 miles lower than the median mileage of a 2020 BMW 3 Series on AskCar.

Similar cars

12 other 2020 BMW 3 Series Sport 3.0 petrol automatic saloons are for sale at UK dealers, from £26,495 to £37,950, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2020 BMW 3 Series Sport, 3.0 petrol saloon, grey. Mileage: 24,500 miles. Price: £34,995, £1,010 more than this car. Dealer: Cubitt Cars in Bingley. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-bec1d8bbf66f
• 2020 BMW 3 Series Sport, 3.0 petrol saloon, blue. Mileage: 28,650 miles. Price: £31,995, £1,990 less than this car. Dealer: Ned Potter in Hereford. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-252864b41ab9
• 2020 BMW 3 Series Sport, 3.0 petrol saloon, grey. Mileage: 29,600 miles. Price: £33,500, £485 less than this car. Dealer: Sytner Chigwell BMW in Chigwell. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-1be5efb77807

• The nearest: 2020 BMW 3 Series Sport, 3.0 petrol saloon, black, 12 miles from this car. Mileage: 31,000 miles. Price: £35,950, £1,965 more than this car. Dealer: Drivewise Automotive in Rotherham. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-0366525ec391