By clicking a retailer link you consent to third-party cookies that track your onward journey. This enables W? to receive an affiliate commission if you make a purchase, which supports our mission to be the UK's consumer champion.

BMWM240i (2017-2021)

Medium
Petrol/Diesel/Mild hybrid
Used only

£15,154Typical price

Test score

where to buy or sell

The version of this car that we've reviewed might not be available to buy through all listed retailer links. For more options, see our guides on where to buy a car and how to sell a car.

Sign up to unlock the full expert review

One of the hottest members of BMW's 2 Series family, M240i was launched in 2016. Offered in Coupé and Convertible forms, it's got a powerful 340hp engine and a chassis very much tuned for sporty driving. But is it the perfect competitor in a medium-car market populated by talented hot hatchbacks? Find out in our full BMW M240i review.

pros

Content has been blurred out, please log in to view.

cons

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 look out for?
Should I buy it?

Full Access first month £5, then £11.99 per month, cancel at any time.

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

Jan 2023Last checked by Which?
Feb 2018First reviewed by Which?
May 2016Released

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

How we test cars

6 Jun 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 effectiveness of the brakes fade with repeat use. Performance is based on in-gear acceleration.

Comfort and practicality

Overall
Entry and exit
Seat comfort
Ride quality
Quietness
Seat space
Boot space (small SUVs and medium cars)

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.

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	Medium
Luxury	No
Convertible	No
Availability	Used only
Used price	£15,154 - £27,327
Fuel type	Petrol/Diesel/Mild hybrid
Tested fuel efficiency	33.6mpg
Length	4,454mm
Width (excluding wing mirrors)	1,774mm
Width (including wing mirrors)	1,990mm
Height	1,408mm
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	11.05 m
On sale date	01 May 2016
Lowest pence-per-mile cost	£18.13

Latest tested engine
Engine and trim name	Coupe Steptronic
Fuel type	Petrol
Capacity and power	3-litre (340hp)
Transmission	8-speed automatic
Driven wheels	Rear-wheel-drive (RWD)
Fuel tank capacity	52 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	£70
Monthly fuel cost
Annual fuel cost
NOx level	Very low
CO level	Low
CO2 at tailpipe/tank-to-wheel (TTW) (g/km)	196
Official fuel economy: NEDC	39.8
Official Euro emission level	Euro 6b
Engine test date	01 December 2017
Test programme	2017

Suggested Alternatives

Volkswagen

Golf GTI (2013-2020)

Medium
Petrol/Diesel/Mild hybrid
Used only

£6,998Typical price

Test score

BMW

1-series (2011-2019)

Medium
Petrol/Diesel/Mild hybrid
Used only

£5,845Typical price

Test score

Mercedes-Benz

B Class (2012-2019)

Medium
Petrol/Diesel/Mild hybrid
Used only

£6,040Typical price

Test score

Best electric cars 2025
Our independent lab tests reveal the best electric cars with enough range to go the distance
How we test cars
Every car we review is subjected to hundreds of tests in our lab and on the road. Find out why you can trust our reviews, and how they help you choose the best car (and avoid the worst)
How to find cheap car insurance
Our 9-step guide to get cheaper car insurance quotes from price comparison sites and how to haggle with car insurance companies to save money

All new and used car advice

Suggested searches

BMWM240i (2017-2021)

where to buy or sell