2023 BMW 4 Series 2.0 420i M Sport

Version: 2.0 420i M Sport [Tech/Pro Pack] Auto RWD Euro 6 2dr Step (181 bhp)

Price: £26,500. Fair price: £591 (2%) under the AskCar estimate of £27,091, our expected asking price for this car from its model, age, mileage and specification, drawing on 1,775 priced BMW 4 Series adverts on AskCar as of 31 October 2026.

AskCar lists 1,813 used BMW 4 Series from 1,042 UK dealerships, as of 31 October 2026.

Overview

Make
BMW
Model
4 Series
Trim
M Sport
Version
2.0 420i M Sport [Tech/Pro Pack] Auto RWD Euro 6 2dr Step (181 bhp)
Mileage
47,990 miles
Year
2023
Fuel type
Petrol
Body type
Convertible
Engine
2.0 L
Gearbox
Automatic
Power
181 bhp
Seats
4
CO2
154 g/km
Colour
Green
Doors
2
Driven wheels
Rear Wheel Drive
Engine badge
420i
Emissions standard
Euro 6

About this car

At 47,990 miles, this 2023 BMW 4 Series M Sport has covered about 19,900 more miles than other 2023 BMW 4 Series cars. The AskCar estimate for this car is £27,091. It is priced at £26,500, which is £591 below that estimate. The AskCar estimate uses UK dealer asking prices, including 1,775 BMW 4 Series adverts, and accounts for the car’s age, mileage and specification. Since we first spotted the advert 32 days ago, the asking price has dropped by £500. MOT records show an expiry date of 26 February 2027, and the latest recorded mileage is consistent with the advert. The seller is Sytner Select Swindon, based in Swindon.

Stock data as of 31 October 2026.

How we estimate prices and check cars

Price history

AskCar first saw this advert on 29 September 2026, 32 days ago. Price reduced by £500 from £27,000 since AskCar first saw it. 1 price reduction recorded, the latest seen on 31 October 2026.

Recorded asking prices
Date observedAsking price
29 September 2026£27,000
31 October 2026£26,500

Price and mileage comparison

Fair price: £591 (2%) under the AskCar estimate of £27,091.

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 1,775 priced BMW 4 Series adverts across different ages and specifications, as of 31 October 2026.

Advertised mileage is about 19,900 miles higher than the median mileage of a 2023 BMW 4 Series on AskCar.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT: valid until 26 February 2027. 37,301 miles at the last test.

Other matching cars

60 other 2023 BMW 4 Series M Sport automatic petrol cars are for sale at UK dealers from £24,499 to £35,880, as of 31 October 2026.

The 5 cheapest:

The 60 matching cars have covered 3,057 to 52,509 miles, compared with 47,990 miles for this car.

Matching year, trim, gearbox and fuel does not mean matching mileage or every specification. The AskCar estimate adjusts for these differences.

Browse all BMW 4 Series cars for sale · 2023 BMW 4 Series price guide

More like this

How to contact the dealer and its opening hours are on this AskCar page.

As of 31 October 2026, AskCar lists 583,548 cars and vans from 12,716 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.