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BMW4 Series Coupe (2020-)

Large
Petrol/Diesel/Mild hybrid
Available new

£42,212Typical price

Test score

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A bold front grille announces the arrival of the all-new second-generation BMW 4 Series. Launched in October 2020, it’s the swoopy two-door coupé variant of the 3 Series saloon, offering not only sportier looks but also a sharper chassis. How does it compare with rivals such as the Audi A5 and Mercedes CLE? Find out in our full BMW 4 Series review.

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What's included?

What is it?
What’s it great at?
What’s it like to drive?
How reliable are BMW's cars?
How comfortable and spacious is it?
How economical is it to run?
How safe is it?
Is there anything I should know?
Should I buy it?

KEY TEST RESULTS
Comfort and practicality
Brand reliability 0-4 years

Aug 2024Last checked by Which?
Sept 2021First reviewed by Which?
Jun 2020Released

The overall Which? test score is made up of the following star ratings, all determined by our rigorous lab tests.

How we test cars

20 May 2025

Ease of driving

Overall
Visibility
Smoothness of power delivery
Driving stability
Cabin layout

How we test ease of driving

To find out how easy a car is to drive, we assess cars across a number of areas from visibility and handling to the layout of the cabin and how smoothly the engine delivers its power.

Performance

Overall
In-gear acceleration
Brakes

How we test performance

We test braking distances and whether the effectivess of the brakes fade with repeat use. Performanc is based on in-gear acceleration.

Comfort and practicality

Overall
Entry and exit
Seat comfort
Ride quality
Quietness
Seat space
Boot space (large cars, SUVs and MPVs)

How we test comfort and practicality

Comfort and practicality includes how easy it is, or not, to get in and out of the car and the maximum height of occupants. We also measure road, wind and engine noise and assess how well the car deals with bumps from large potholes to jittery surfaces like cobble stones.

Euro NCAP

How we test euro ncap

Any car that receives a rating of two stars or less from Euro NCAP is made a Don't Buy. Any car that receives three stars can't be a Best Buy. If a car has been available for more than four years and has not been tested by Euro NCAP, it cannot be a Best Buy.

Safety kit

How we test safety kit

We factor in the safety equipment that’s factory-fitted or optional, along with how well the car protects its occupants and pedestrians in the event of an accident. We also test how easy it is to fit a variety of child car seats.

Brand reliability 0-4 years

Overall
Electric car reliability
Plug-in hybrid reliability
Petrol reliability
Diesel reliability

How we test brand reliability 0-4 years

Our reliability ratings are based on the feedback from tens of thousands of UK motorists, as collected in our annual Which? car survey. We divide all reliability feedback into three age groups: cars aged up to four years, five to nine years, and 10 to 15 years.

Brand reliability 5-9 years

Overall
Full hybrid reliability
Plug-in hybrid reliability
Diesel reliability

Brand reliability 10-15 years

Overall
Petrol reliability
Diesel reliability

General
Class	Large
Luxury	No
Convertible	No
Availability	Available new
New price	£42,212 - £47,498
Fuel type	Petrol/Diesel/Mild hybrid
Tested fuel efficiency	33.6mpg
Length	4,770mm
Width (excluding wing mirrors)	1,852mm
Width (including wing mirrors)	2,090mm
Height	1,393mm
Driver max height
Second-row passenger max height
Boot space with seats up
Boot space with seats down
Number of seats	4
Folding rear seats	Yes
Isofix attachments	Yes
Turning circle	12.3 m
On sale date	02 June 2020
Lowest pence-per-mile cost	£18.13

Latest tested engine
Engine and trim name	M440i Coupe xDrive Steptronic
Fuel type	Mild-Petrol-Hybrid
Capacity and power	3-litre (374hp)
Transmission	8-speed automatic
Driven wheels	Four-wheel-drive (4WD)
Fuel tank capacity	59 litres
Tested fuel economy: City / Out of town / Motorway (mpg)
Tested fuel economy: Combined (mpg)
Cost per mile	18.13p per mile
Cost of filling tank	£79
Monthly fuel cost
Annual fuel cost
NOx level	Extremely Low (trace)
CO level	Low
CO2 at tailpipe/tank-to-wheel (TTW) (g/km)	200
Official fuel economy: WLTP	36.2 to 36.7
Official Euro emission level	Euro 6d
Braked tow load (KG)	1800kg
Unbraked tow load (KG)	750kg
Engine test date	26 April 2021
Test programme	2017

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BMW4 Series Coupe (2020-)

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