2023 BMW 3 Series 3.0 M340d MHT

Overview

• Make: BMW
• Model: 3 Series
• Version: 3.0 M340d MHT Touring Auto 4WD Euro 6 (s/s) 5dr (335 bhp)
• Year: 2023
• Mileage: 15,701 miles
• Fuel: Diesel, mild hybrid
• Body: Estate, 5 doors, 5 seats
• Engine: 3.0 litres, 335 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Grey
• CO2: 164 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 15,701 miles on the clock, this 2023 BMW 3 Series has done roughly 18,900 fewer miles than a typical 2023 BMW 3 Series. Its asking price of £42,000 is £4,759 below the AskCar estimate of £46,759. The AskCar estimate uses UK dealer asking prices, including 6,897 BMW 3 Series adverts, and accounts for the car’s age, mileage and specification. We first saw this car advertised 126 days ago. Its asking price has since fallen by £4,500. We checked its advertised mileage against the government's MOT record, and they match. The seller is Sytner Newport BMW, based in Newport. 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: £4,759 (10%) under the AskCar estimate of £46,759.

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 2023 BMW 3 Series with the 3.0 diesel engine is typically advertised at £39,600: the median of the 68 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2023 BMW 3 Series has been on sale for at least 126 days.

Price history

AskCar first saw this advert on 2 July 2026 at £46,500. Its asking price is now £42,000, £4,500 less. The latest price cut was seen on 5 November 2026.

Price changes recorded:

• 2 July 2026: £46,500
• 30 July 2026: £45,750
• 6 August 2026: £45,500
• 22 August 2026: £45,000
• 4 September 2026: £44,000
• 26 September 2026: £43,500
• 23 October 2026: £42,750
• 5 November 2026: £42,000

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 27 April 2027.

It failed its MOT on 16 April 2026 (offside front outer tyre has a bulge, caused by separation or partial failure of its structure) and passed later the same day.

Advisories at the latest test: oil leak, but not excessive; engine lower covers fitted.

Mileage at that test: 14,995 miles, which matches the advertised 15,701 miles.

Advertised mileage is about 18,900 miles lower than the median mileage of a 2023 BMW 3 Series on AskCar.