2025 BMW 4 Series

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

£42,450

Fair price: within 8% of the typical £40,252 for this model, age and mileage, drawing on 1,763 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: 3,379 miles
Year: 2025
Fuel type: Petrol
Body type: Convertible
Engine: 2.0 L
Gearbox: Automatic
Power: 181 bhp
Seats: 4
CO2: 169 g/km
Colour: Grey
Doors: 2
Driven wheels: Rear Wheel Drive
Engine badge: 420i
Emissions standard: Euro 6

About this car

With 3,379 miles on the clock, this 2025 BMW 4 Series M Sport has done roughly 4,200 fewer miles than a typical 2025 BMW 4 Series. The dealer is asking £42,450, which is £2,198 above our market estimate of £40,252. We use UK dealer asking prices, including 1,763 BMW 4 Series listings, and account for the car’s age, mileage and specification. Since we first spotted the advert 21 days ago, the asking price has dropped by £1,500. The seller is Ocean Plymouth, based in Plymouth.

Stock data from 20 October 2026.

How we estimate prices and check cars

Price history

First seen on 30 September 2026, 21 days ago. Advert duration calculated on 21 October 2026. Net asking-price reduction: £1,500 from the first recorded £43,950. 1 price reduction recorded, the latest observed on 20 October 2026.

Recorded asking prices
Date observed	Asking price
30 September 2026	£43,950
20 October 2026	£42,450

Price and mileage comparison

Estimated market asking price: £40,252. The asking price is £2,198 above 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 1,763 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 4,200 miles lower than typical for a 2025 BMW 4 Series.

MOT

MOT no details held by dvla.

49 other cars with the same year, trim, gearbox and fuel are for sale from £33,750 to £44,995.

Other matching cars (up to five, cheapest first)
Asking price	Mileage
£33,750	9,348 miles
£33,995	13,025 miles
£34,000	9,350 miles
£34,780	9,181 miles
£35,000	4,744 miles

These cars have covered 1,146–14,283 miles, compared with 3,379 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 · 2025 BMW 4 Series price guide

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Dealer

Ocean Plymouth, Plymouth. Across the dealer network: 163 cars for sale.

Dealer postcode: PL6 8LD.