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Mercedes-BenzB-Class (2019-)

Available new
MPV
Petrol/Diesel/Mild hybrid

£31,715Typical price

Test score

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Mercedes-Benz describes its B-Class as a 'Sports Tourer'. That signifies its intended role as a more practical model than the A-Class on which it's based, while retaining a sporty character. How well does the third-generation B-Class, launched in 2019, succeed? Can it beat rival hatchbacks? Find out in our full Mercedes-Benz B-Class review.

pros

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cons

What's included?

What is it?
What's it great at?
What's it like to drive?
How reliable is the Mercedes-Benz B-Class (2019-)?
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?

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

Dec 2025Last checked by Which?
Oct 2019First reviewed by Which?
Dec 2018Released

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

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How we test cars

3 Feb 2026

Ease of driving

Overall
Visibility
Smoothness of power delivery
Driving stability
Cabin layout

Driving performance

Overall
Acceleration
Gearbox and transmission
Brakes

Comfort and practicality

Overall
Entry and exit
Seat comfort
Ride quality
Quietness
Build quality
Seat space
Boot space

Euro NCAP

Safety kit

Model reliability 0-4 years

How we test model reliability 0-4 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. A car cannot be a Best Buy if: It's available to buy new and has a 0-4-year model reliability score of two stars or less; or it's only available on the used market and has a 5-9-year model reliability score of two stars or less; or it's only available on the used market and launched less than five years ago and has a 0-4-year model reliability score of two stars of less.

Model reliability 5-9 years

How we test model reliability 5-9 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
Plug-in hybrid reliability
Diesel reliability

Brand reliability 10-15 years

Overall
Petrol reliability
Diesel reliability

General
Class	MPV
Luxury	No
Convertible	No
Availability	Available new
New price	£31,715 - £40,070
Fuel type	Petrol/Diesel/Mild hybrid
Tested fuel efficiency	54.3mpg
Length	4,419mm
Width (excluding wing mirrors)	1,796mm
Width (including wing mirrors)	2,025mm
Height	1,562mm
Driver max height
Second-row passenger max height
Boot space with seats up
Boot space with seats down
Number of seats	5
Folding rear seats	Yes
Isofix attachments	Yes
Turning circle	11 m
On sale date	03 December 2018
Lowest pence-per-mile cost	£12.25

Latest tested engine
Engine and trim name	B220d Progressive 8G-DCT
Fuel type	Diesel
Capacity and power	2-litre (190hp)
Transmission	8-speed dual-clutch automatic
Driven wheels	Front-wheel-drive (FWD)
Fuel tank capacity	43 litres
Tested fuel economy: City / Out of town / Motorway (mpg)
Tested fuel economy: Combined (mpg)
Cost per mile	12.25p per mile
Cost of filling tank	£63
Monthly fuel cost
Annual fuel cost
NOx level	Extremely Low (trace)
CO level	Extremely Low (trace)
CO2 at tailpipe/tank-to-wheel (TTW) (g/km)	138
Official Euro emission level	Euro 6d
Braked tow load (KG)	1600kg
Unbraked tow load (KG)	750kg
Engine test date	08 July 2019
Test programme	2017

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Mercedes-BenzB-Class (2019-)

where to buy or sell

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What's included?

Test results

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Suggested Alternatives

BMW

Skoda

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