2020 BMW 3 Series 3.0 M340d MHT

Overview

• Make: BMW
• Model: 3 Series
• Version: 3.0 M340d MHT Auto 4WD Euro 6 (s/s) 4dr (335 bhp)
• Year: 2020
• Mileage: 27,345 miles
• Fuel: Diesel, mild hybrid
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres, 335 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Grey
• CO2: 160 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 27,345 miles on the clock, this 2020 BMW 3 Series has done roughly 32,300 fewer miles than a typical 2020 BMW 3 Series. The AskCar estimate for this car is £32,542. It is priced at £25,895, which is £6,647 below that estimate. The AskCar estimate draws on 6,897 BMW 3 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this advert 133 days ago, and its asking price has since fallen by £1,100. Our latest MOT record expired on 19 February 2026. Check the current position with the dealer. The government's MOT record matches its advertised mileage. You can find this car at Castle Island Cars and Commercials in Ashington. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Good value: £6,647 (20%) under the AskCar estimate of £32,542.

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 6,897 priced BMW 3 Series adverts across different ages and specifications, as of 5 November 2026.

A 2020 BMW 3 Series with the 3.0 diesel engine is typically advertised at £27,500: the median of the 61 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2020 BMW 3 Series has been on sale for at least 133 days.

Price history

AskCar first saw this advert on 25 June 2026 at £26,995. Its asking price is now £25,895, £1,100 less. The latest price cut was seen on 9 October 2026.

Price changes recorded:

• 25 June 2026: £26,995
• 9 October 2026: £25,895

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: the latest record we hold ran out on 19 February 2026; ask the dealer for the current MOT.

It failed its MOT on 20 February 2025 (engine MIL inoperative or indicates a malfunction) and passed later the same day.

There were no advisories at the latest test.

Mileage at that test: 21,059 miles, which matches the advertised 27,345 miles.

Advertised mileage is about 32,300 miles lower than the median mileage of a 2020 BMW 3 Series on AskCar.