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: 19,000 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres, 368 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Black
• CO2: 185 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

The advertised mileage for this 2020 BMW 3 Series Sport is 19,000 miles. Its asking price of £37,950 is £1,901 above the AskCar estimate of £36,049. The AskCar estimate uses 6,822 UK dealer adverts for the BMW 3 Series, with adjustments for age, mileage, trim, engine and other specifications. We have tracked this advert for 164 days. The latest MOT recorded 20,076 miles, above the advertised mileage. Check this with the dealer. Our latest MOT record expired on 6 July 2026. Check the current position with the dealer. You can find this car at First Autos in Watford. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 8 November 2026.

How we estimate prices and check cars

Price

Fair price: £1,901 (5%) over the AskCar estimate of £36,049.

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 6,822 priced BMW 3 Series adverts across different ages and specifications, as of 8 November 2026.

A 2020 BMW 3 Series with the 3.0 petrol engine is typically advertised at £28,000: the median of the 65 for sale on AskCar, as of 8 November 2026.

Time on sale

This 2020 BMW 3 Series has been on sale for at least 164 days.

Price history

AskCar first saw this advert on 28 May 2026 at £35,495. Its asking price is now £37,950, £2,455 more.

Price changes recorded:

• 29 May 2026: £35,495
• 4 August 2026: £37,950

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 8 November 2026: the latest record we hold ran out on 6 July 2026; ask the dealer for the current MOT.

It has had 4 MOTs. The latest, on 7 July 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 20,076 miles. The advert says 19,000 miles, fewer than the MOT record, so ask the dealer which is right.

Advertised mileage is about 40,000 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 £35,950, as of 8 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, £2,955 less 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, grey. Mileage: 24,728 miles. Price: £33,985, £3,965 less than this car. Dealer: Stratstone Bmw Doncaster in Doncaster. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-5a609f2e913b
• 2020 BMW 3 Series Sport, 3.0 petrol saloon, blue. Mileage: 28,650 miles. Price: £30,995, £6,955 less than this car. Dealer: Ned Potter in Hereford. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-252864b41ab9

• The nearest: 2020 BMW 3 Series Sport, 3.0 petrol saloon, grey, 12 miles from this car. Mileage: 66,990 miles. Price: £27,950, £10,000 less than this car. Dealer: Car Planet Barnet in Barnet. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-71d3b011b00e