2023 BMW 3 Series 3.0 M340d MHT

Overview

• Make: BMW
• Model: 3 Series
• Version: 3.0 M340d MHT Auto 4WD Euro 6 (s/s) (335 bhp)
• Year: 2023
• Mileage: 55,400 miles
• Fuel: Diesel, mild hybrid
• Body: 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 55,400 miles on the clock, this 2023 BMW 3 Series has done roughly 21,200 more miles than a typical 2023 BMW 3 Series. Priced at £37,500, it is advertised £323 above the AskCar estimate of £37,177. To work out the AskCar estimate, we analyse UK dealer adverts for 6,862 BMW 3 Series cars across different ages and specifications. It first appeared in our advert records today. We checked its advertised mileage against the government's MOT record, and they match. 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 4 November 2026.

How we estimate prices and check cars

Price

Fair price: £323 (under 1%) over the AskCar estimate of £37,177.

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 6,862 priced BMW 3 Series adverts across different ages and specifications, as of 4 November 2026.

A 2023 BMW 3 Series with the 3.0 diesel engine is typically advertised at £40,000: the median of the 69 for sale on AskCar, as of 4 November 2026.

Time on sale

AskCar first saw this 2023 BMW 3 Series advertised today. About 4 in 10 of 2023 BMW 3 Series cars are gone from sale within a month of being advertised: 293 of the 657 first advertised between 7 July 2026 and 1 October 2026.

Price history

AskCar first saw this advert on 4 November 2026 at £37,500. 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 4 November 2026: valid until 27 March 2027.

It has had one MOT, on 25 March 2026, and passed.

Advisories at the latest test: nearside rear tyre worn close to legal limit/worn on edge; offside rear tyre worn close to legal limit/worn on edge.

Mileage at that test: 47,165 miles, which matches the advertised 55,400 miles.

Advertised mileage is about 21,200 miles higher than the median mileage of a 2023 BMW 3 Series on AskCar.