2023 BMW 4 Series 2.0 420i M Sport

Overview

• Make: BMW
• Model: 4 Series
• Trim: M Sport
• Version: 2.0 420i M Sport Auto RWD Euro 6 2dr Step (181 bhp)
• Year: 2023
• Mileage: 30,808 miles
• Fuel: Petrol
• Body: 2 doors, 4 seats
• Engine: 2.0 litres, 181 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: White
• CO2: 151 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2023 BMW 4 Series M Sport has covered 30,808 miles, around 2,600 more miles than is typical for its age. The dealer is asking £27,890, which is £551 below the AskCar estimate of £28,441. To work out the AskCar estimate, we analyse UK dealer adverts for 1,805 BMW 4 Series cars across different ages and specifications. We first recorded this advert 40 days ago, and its asking price has since fallen by £610. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is Sytner Luton BMW, based in Luton. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 9 November 2026.

How we estimate prices and check cars

Price

Fair price: £551 (1%) under the AskCar estimate of £28,441.

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 1,805 priced BMW 4 Series adverts across different ages and specifications, as of 9 November 2026.

A 2023 BMW 4 Series with the 2.0 petrol engine is typically advertised at £29,500: the median of the 85 for sale on AskCar, as of 9 November 2026.

Time on sale

This 2023 BMW 4 Series has been on sale for at least 40 days.

Price history

AskCar first saw this advert on 30 September 2026 at £28,500. Its asking price is now £27,890, £610 less. The latest price cut was seen on 24 October 2026.

Price changes recorded:

• 30 September 2026: £28,500
• 17 October 2026: £28,200
• 24 October 2026: £27,890

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 9 November 2026: valid until 30 March 2027.

It has had one MOT, on 27 March 2026, and passed.

There were no advisories at the latest test.

Mileage at that test: 28,911 miles, which matches the advertised 30,808 miles.

Advertised mileage is about 2,600 miles higher than the median mileage of a 2023 BMW 4 Series on AskCar.