2023 BMW 4 Series

Overview

Make

BMW

Model

4 Series

Trim

M SPORT

Version

2.0 420i M Sport Auto RWD Euro 6 (s/s) 2dr (181 bhp)

Mileage

33,951 miles

Year

2023

Fuel type

Petrol

Body type

Convertible

Engine

2.0 L

Gearbox

Automatic

Power

181 bhp

Seats

4

CO2

160 g/km

Colour

White

Doors

2

Driven wheels

Rear Wheel Drive

Engine badge

420i

Emissions standard

Euro 6

About this car

This 2023 BMW 4 Series M Sport has covered 33,951 miles, around 4,800 more than typical for its age. The dealer is asking £27,120, which is £1,850 below our market estimate of £28,970. We use UK dealer asking prices, including 1,758 BMW 4 Series listings, and account for the car’s age, mileage and specification. Since we first spotted the advert 89 days ago, the asking price has dropped by £2,015. It may give you a starting point for a conversation about price. Its MOT is recorded as valid until 10 March 2027. The advertised mileage is consistent with the latest MOT reading. It is advertised by Carsa Towcester in West Northamptonshire.

Stock data from 22 October 2026.

How we estimate prices and check cars

Price and mileage comparison

Estimated market asking price: £28,970. The asking price is £1,850 below this estimate.

The estimate uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It estimates an advertised price, not a confirmed sale price.

The pricing calculation includes 1,758 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 4,800 miles higher than typical for a 2023 BMW 4 Series.

The advertised mileage is consistent with the last MOT reading.