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: 66,990 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 66,990 miles, approximately 7,000 above the typical mileage for its age. Its asking price of £27,950 is £818 above the AskCar estimate of £27,132. The AskCar estimate draws on 6,902 BMW 3 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. This car was first seen in our listings data 40 days ago. Our records show an MOT expiry date of 3 October 2026, which has passed. Ask the dealer for an update. Its advertised mileage matches the government's MOT record. It is for sale at Car Planet Barnet in New Southgate. 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: £818 (3%) over the AskCar estimate of £27,132.

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 40 days.

Price history

AskCar first saw this advert on 27 September 2026 at £27,950. 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: the latest record we hold ran out on 3 October 2026; ask the dealer for the current MOT.

It failed its MOT on 4 October 2025 (front driver's view of an obligatory external mirror significantly affected by an obstruction) and passed later the same day.

Advisories at the latest test: front tyre worn close to legal limit/worn on edge both sides; rear tyre worn close to legal limit/worn on edge both sides.

Mileage at that test: 56,911 miles, which matches the advertised 66,990 miles.

Advertised mileage is about 7,000 miles higher 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: 69,323 miles. Price: £26,495, £1,455 less than this car. Dealer: Penguin Cars in Shrewsbury. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-e4f391f5070b
• 2020 BMW 3 Series Sport, 3.0 petrol saloon, black. Mileage: 56,834 miles. Price: £30,699, £2,749 more than this car. Dealer: Lookers BMW Stoke-On-Trent in Stoke-on-Trent. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-67e78443d43c
• 2020 BMW 3 Series Sport, 3.0 petrol saloon, grey. Mileage: 53,000 miles. Price: £32,495, £4,545 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, 10 miles from this car. Mileage: 29,600 miles. Price: £33,500, £5,550 more than this car. Dealer: Sytner Chigwell BMW in Chigwell. AskCar page: https://askcar.co.uk/car/bmw-3-series-2020-1be5efb77807