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: 29,600 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 29,600 miles, approximately 30,400 below the typical mileage for its age. The dealer is asking £33,500, which is £783 below the AskCar estimate of £34,283. 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 advert 30 days ago, and its asking price has since fallen by £500. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is advertised by Sytner Chigwell BMW in Loughton. 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: £783 (2%) under the AskCar estimate of £34,283.

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 £34,000. Its asking price is now £33,500, £500 less. The latest price cut was seen on 23 October 2026.

Price changes recorded:

• 7 October 2026: £34,000
• 23 October 2026: £33,500

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 19 May 2027.

It has had 5 MOTs. The latest, on 20 May 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 26,880 miles, which matches the advertised 29,600 miles.

Advertised mileage is about 30,400 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, blue. Mileage: 28,650 miles. Price: £31,995, £1,505 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, black. Mileage: 31,000 miles. Price: £35,950, £2,450 more than this car. Dealer: Drivewise Automotive in Rotherham. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-0366525ec391
• 2020 BMW 3 Series Sport, 3.0 petrol saloon, grey. Mileage: 24,728 miles. Price: £33,985, £485 more than this car. Dealer: Stratstone Bmw Doncaster in Doncaster. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-5a609f2e913b

• The nearest: 2020 BMW 3 Series Sport, 3.0 petrol saloon, grey, 10 miles from this car. Mileage: 66,990 miles. Price: £27,950, £5,550 less than this car. Dealer: Car Planet Barnet in Barnet. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-71d3b011b00e