2018 BMW 3 Series

3.0 340i Auto RWD Euro 6 4dr (321 bhp)

£28,995

Above the going rate: £4,239 over the typical £24,756 for this model, age and mileage, drawing on 6,811 adverts of this make and model.

Overview

Make
BMW
Model
3 Series
Version
3.0 340i Auto RWD Euro 6 4dr (321 bhp)
Mileage
28,626 miles
Year
2018
Fuel type
Petrol
Body type
Saloon
Engine
3.0 L
Gearbox
Automatic
Power
321 bhp
Seats
5
CO2
159 g/km
Colour
Purple
Doors
4
Driven wheels
Rear Wheel Drive
Engine badge
340i
Emissions standard
Euro 6

About this car

This 2018 BMW 3 Series is advertised with 28,626 miles, approximately 44,700 below the typical mileage for its age. At £28,995, it is advertised £4,239 above our estimated market asking price of £24,756. We use UK dealer asking prices, including 6,811 BMW 3 Series listings, and account for the car’s age, mileage and specification. It first appeared in our advert records 15 days ago. The latest MOT record shows an expiry date of 23 September 2027, with the advertised mileage consistent with the recorded reading. You can find this car at Merlin Performance in Poole.

Stock data from 20 October 2026.

How we estimate prices and check cars

Price history

First seen on 6 October 2026, 15 days ago. Advert duration calculated on 21 October 2026.

Recorded asking prices
Date observedAsking price
6 October 2026£28,995
20 October 2026£28,995

Price and mileage comparison

Estimated market asking price: £24,756. The asking price is £4,239 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 6,811 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 44,700 miles lower than typical for a 2018 BMW 3 Series.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 23 September 2027. 28,118 miles at the last test.

4 other cars with the same year, trim, gearbox and fuel are for sale from £12,500 to £35,960.

Other matching cars
Asking priceMileage
£12,50054,512 miles
£13,49989,125 miles
£16,99038,172 miles
£35,96024,000 miles

These cars have covered 24,000–89,125 miles, compared with 28,626 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 3 Series cars for sale · 2018 BMW 3 Series price guide

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Dealer

Merlin Performance, Poole. Across the dealer network: 28 cars for sale.

Dealer postcode: BH17 0GL.

Dealer opening hours

Monday
09:00-17:00
Tuesday
09:00-17:00
Wednesday
09:00-17:00
Thursday
09:00-17:00
Friday
09:00-17:00
Saturday
09:00-17:00
Sunday
Closed

Vehicle photos