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BMW2-Series convertible (2015-2021)

Medium
Petrol/Diesel/Mild hybrid
Used only

£10,037Typical price

Test score

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The 2 Series Convertible took over the reins from BMW's 1 Series Convertible as BMW's entry-level four-seat open-top car. But just how impressive is the first-generation convertible, on sale between 2015-2021, compared to its sports car rivals? Find out in our full review.

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What's included?

What is it?
What's it great at?
What's it like to drive?
How reliable is the BMW 2-Series convertible (2015 to 2021)?
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?

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

Apr 2025Last checked by Which?
Mar 2015First reviewed by Which?
Mar 2015Released

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.

Model reliability 5-9 years

How we test model reliability 5-9 years

How reliable this car is, based on the real life feedback of current owners 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 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	Yes
Availability	Used only
Used price	£10,037 - £19,783
Fuel type	Petrol/Diesel/Mild hybrid
Tested fuel efficiency	37.7mpg
Length	4,432mm
Width (excluding wing mirrors)	1,774mm
Width (including wing mirrors)	1,990mm
Height	1,413mm
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	No
Isofix attachments	Yes
Turning circle	11.15 m
On sale date	01 March 2015
Lowest pence-per-mile cost	£16.15

Latest tested engine
Engine and trim name	228i Cabrio M Sport Steptronic
Fuel type	Petrol
Capacity and power	2-litre (245hp)
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	16.15p per mile
Cost of filling tank	£70
Monthly fuel cost
Annual fuel cost
NOx level	Extremely Low (trace)
CO level	Extremely High
CO2 at tailpipe/tank-to-wheel (TTW) (g/km)	167
Official Euro emission level	Euro 6b
Braked tow load (KG)	1200kg
Unbraked tow load (KG)	750kg
Engine test date	17 April 2015
Test programme	2012-2016

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BMW2-Series convertible (2015-2021)

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