Mercedes-Benz B-Class (2005 – 2012) Review

Mercedes-Benz B-Class (2005 – 2012) At A Glance


+Raised driving position, lots of interior room, decent diesel engines, good ride quality on smaller wheels.

-Not good enough for the money, steering feels too artificial, problematic CVT automatic gearboxes, lacklustre petrol engines.

Insurance Groups are between 13–21
On average it achieves 75% of the official MPG figure

Real MPG average for a Mercedes-Benz B-Class (2005 – 2012)


Real MPG was created following thousands of readers telling us that their cars could not match the official figures.

Real MPG gives real world data from drivers like you to show how much fuel a vehicle really uses.

Average performance


Real MPG

25–56 mpg

MPGs submitted


Diesel or petrol? If you're unsure whether to go for a petrol or diesel (or even an electric model if it's available), then you need our Petrol or Diesel? calculator. It does the maths on petrols, diesels and electric cars to show which is best suited to you.

Satisfaction Index

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Ask Honest John

I'm an international student in Manchester - what will bring my insurance premium down?
"I'm a 25 years old, international full-time student in Manchester. I've been in the UK since 2013 and got my driving license in 2011. I was recently offered a 2007 Mercedes-Benz B-Class for £3800. It has 81,000 miles on the clock. I'm looking for cheap insurance to cover the car, what do you recommend?"
Your lack of driving history will work against you, so try all the different price comparison websites and then ring up individual brokers and direct insurers to see if you can get a better quote. Also, sticking an older person with more driving experience will bring the premium down, even if they never drive your car. Unfortunately, you will get hit heavily for being a student, and more so being in Manchester. If I was you, especially if it's your first car, I would look at driving something else.
Answered by Tim Kelly
Buying a used B-Class - what should I check?
"I am interested in purchasing a used 2012 petrol manual or auto Mercedes-Benz B-Class. What do I need to lookout for and what alternative would you recommend? Annual mileage around 5000 max."
I think you will be disappointed with the 'quality': and Problem areas in A Toyota Verso 1.8i Valvematic Multidrive S is better: and
Answered by Honest John
Automatic Transmissions
"Hello again John You have helped me many times re PROPER! auto boxes on cars I have bought. Can I ask you this please? Am looking at Mercedes 1.5 B160 Automatic about 2010/11 and the review says watch out for the poor auto box but you also say it is the same as my current Ford Cmax auto which is superb! What is the situation as I have driven only autos for 30 years and so far my Cmax and my other car Scenic Auto both have nice boxes. Will I be disappointed with the Merc as it looks to have nice comfortable seats and control. Also should I go for the sport model with the larger wheel or the SE. As I am quite elderly I look for comfort as in my Scenic. Also I note the petrol is 1.5 only and I have always had 2L - but never drive very fast or very far. Thanks again John for your help Gordon"
The transmission in this A and B Class is a CVT and they can give trouble. The transmission in a C-Max 1.6TDCI automatic was a CVT. In this C-Max the engine developed more torque than the transmission was rated for which is why they had problems. Not many now left alive because the cost of fixing them is more than they are worth. Later C-Max 2.0i petrol models had 4-speed torque converter auto. The auto in the current model is a dual clutch Powershift. Your Scenic might have a torque converter auto or, if it is more recent, it might have an EDC (efficient dual clutch).
Answered by Honest John
Broken wing mirror - can I get it repaired?
"I have a 2008 Meredes-Benz B-class. The wing mirror adjuster no longer works and now the indicator is playing up. The local garage advise this is due to broken wires between the door and the mirror and that these fine wires are difficult to repair. A new mirror is £270. Is there anybody who does replacement wiring."
Yes. A local 'Car Electrical Specialist' (
Answered by Honest John
More Questions

What does a Mercedes-Benz B-Class (2005 – 2012) cost?