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: 43,853 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

This 2020 BMW 3 Series Sport is advertised with 43,853 miles, approximately 16,100 below the typical mileage for its age. The dealer is asking £31,890, which is £376 above the AskCar estimate of £31,514. To work out the AskCar estimate, we analyse UK dealer adverts for 6,902 BMW 3 Series cars across different ages and specifications. We first recorded this car for sale 33 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Walkers Of Selby, based in Selby. 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: £376 (1%) over the AskCar estimate of £31,514.

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 33 days.

Price history

AskCar first saw this advert on 4 October 2026 at £31,890. 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 6 November 2026: valid until 9 November 2026.

It has had 4 MOTs. The latest, on 10 November 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 41,070 miles, which matches the advertised 43,853 miles.

Advertised mileage is about 16,100 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: 44,200 miles. Price: £30,300, £1,590 less than this car. Dealer: Redgate Lodge in Newcastle upon Tyne. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-740c3344a0b2
• 2020 BMW 3 Series Sport, 3.0 petrol saloon, grey. Mileage: 46,500 miles. Price: £31,995, £105 more than this car. Dealer: Riviera Automotive in Cleckheaton. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-bcb0f484d05e
• 2020 BMW 3 Series Sport, 3.0 petrol saloon, grey. Mileage: 53,000 miles. Price: £32,495, £605 more than this car. Dealer: Fitzroy Motor Co in Ringwood. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-b547d4a47a6b

• The nearest: 2020 BMW 3 Series Sport, 3.0 petrol saloon, grey, 17 miles from this car. Mileage: 24,728 miles. Price: £33,985, £2,095 more than this car. Dealer: Stratstone Bmw Doncaster in Doncaster. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-5a609f2e913b