2023 BMW 4 Series

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

£30,500

Fair price: within 8% of the typical £31,050 for this model, age and mileage, drawing on 1,725 adverts of this make and model.

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: 18,857 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: Black
Doors: 2
Driven wheels: Rear Wheel Drive
Engine badge: 420i
Emissions standard: Euro 6

About this car

With 18,857 miles on the clock, this 2023 BMW 4 Series M Sport has done roughly 10,200 fewer miles than a typical 2023 BMW 4 Series. Its asking price of £30,500 is £550 below our estimate of £31,050. We use UK dealer asking prices, including 1,725 BMW 4 Series listings, and account for the car’s age, mileage and specification. The asking price is now £1,995 lower than when we first recorded the advert 43 days ago. MOT records show an expiry date of 27 April 2027, and the latest recorded mileage is consistent with the advert. The seller is Hedin Automotive Enfield BMW, based in Enfield.

Stock data from 23 October 2026.

How we estimate prices and check cars

Price history

First seen on 12 September 2026, 43 days ago. Advert duration calculated on 25 October 2026. Net asking-price reduction: £1,995 from the first recorded £32,495. 5 price reductions recorded, the latest observed on 23 October 2026.

Recorded asking prices
Date observed	Asking price
12 September 2026	£32,495
18 September 2026	£32,432
22 September 2026	£32,364
24 September 2026	£32,605
27 September 2026	£31,559
9 October 2026	£31,000
23 October 2026	£30,500

Price and mileage comparison

Estimated market asking price: £31,050. The asking price is £550 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 1,725 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 10,200 miles lower than typical for a 2023 BMW 4 Series.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 27 April 2027. 16,609 miles at the last test.

60 other cars with the same year, trim, gearbox and fuel are for sale from £23,799 to £35,880.

Other matching cars (up to five, cheapest first)
Asking price	Mileage
£23,799	56,183 miles
£24,995	39,899 miles
£24,999	37,350 miles
£24,999	45,203 miles
£25,890	51,584 miles

These cars have covered 3,057–56,183 miles, compared with 18,857 miles for this car.

Matching year, trim, gearbox and fuel does not mean matching mileage or every specification. Our estimate adjusts for these differences using the wider market data.

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

Vehicle photos

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