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: 58,000 miles
• Fuel: Diesel, mild hybrid
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres, 335 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Blue
• CO2: 160 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 BMW 3 Series has covered 58,000 miles. Priced at £27,500, it is advertised £166 above the AskCar estimate of £27,334. The AskCar estimate uses 6,886 UK dealer adverts for the BMW 3 Series, with adjustments for age, mileage, trim, engine and other specifications. We first recorded this car for sale today. The seller is Sytner Cardiff BMW, based in Cardiff. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 7 November 2026.

How we estimate prices and check cars

Price

Fair price: £166 (under 1%) over the AskCar estimate of £27,334.

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 6,886 priced BMW 3 Series adverts across different ages and specifications, as of 7 November 2026.

A 2020 BMW 3 Series with the 3.0 diesel engine is typically advertised at £28,000: the median of the 65 for sale on AskCar, as of 7 November 2026.

Time on sale

AskCar first saw this 2020 BMW 3 Series advertised today. About half of 2020 BMW 3 Series cars are gone from sale within a month of being advertised: 345 of the 721 first advertised between 7 July 2026 and 4 October 2026.

Price history

AskCar first saw this advert on 7 November 2026 at £27,500. Its asking price has not changed.

Mileage and MOT

Advertised mileage is about 1,200 miles lower than the median mileage of a 2020 BMW 3 Series on AskCar.