Skip advert
Advertisement

Mercedes B-Class (2011-2018) review - Reliability and Safety

Mercedes’ quality has really picked up since the firm’s early-2000s slump, but the model didn't do well in recent Driver Power scores

Reliability and Safety rating

4.0

How we review cars
RRP
£35,945 £44,300
Find your Mercedes B-Class
Compare deals from trusted partners on this car and previous models.
Or are you looking to sell your car?
Value my car
Fast, no-nonsense car selling
Value my car

Mercedes has massively improved its quality and reliability since the dreadful days of the early 2000s, when models like the E-Class and C-Class threatened to undo a quality reputation stretching back more than a century. Thankfully, things have picked up a lot since then, but the B-Class hasn’t done well in our Driver Power survey, finishing in 118th place – into the bottom half of the table. Perhaps lingering issues with Mercedes’ dealer network is holding it back?

Advertisement - Article continues below

At least on the safety front, you’re definitely OK. Merc’s reputation for safety is really only matched by Volvo, and the B-Class comes with a battery of life-saving tech. As well as lots of airbags, stability control and ABS, all B-Classes come with Attention Assist (which warns you if you’re getting drowsy) and Collision Prevention Assist Plus which warns you if you’re getting too close to the car in front, and which can activate emergency braking if you don’t take action to avoid a collision. There are also brake lights that flash under heavy braking and an emergency call system. EuroNCAP gave it a full five-stars for crash safety with a whopping 97 per cent score for adult occupant protection.

You can spec safety up further with items like active cruise control, blind spot monitor, lane-keeping assist and Pre-Safe, which pressurises the brakes and tightens the seatbelts if it detects an unavoidable collision. 

Warranty

You get a three-year, unlimited mileage warranty, with a 30-year anti-perforation guarantee with the B-Class. There’s no option to increase the length of the warranty, but you do get complimentary roadside rescue, which renews every year as long as you keep the car serviced at a Mercedes main dealer.

Servicing

Mercedes doesn’t issue a set mileage limit for services – that’s taken care of by the on-board diagnostics, but it does recommend at least one visit back to the dealer every year. There’s a fixed-price service plan available, which costs from around £24 a month on a subscription basis, which covers all your normal regular serving costs.

Skip advert
Advertisement

Which Is Best

Cheapest

  • Name
    B200 Sport Executive 5dr Auto
  • Gearbox type
    Semi-auto
  • RRP
    £35,945
Select car

Most Economical

  • Name
    B200d Sport Executive 5dr Auto
  • Gearbox type
    Semi-auto
  • RRP
    £37,045
Select car

Fastest

  • Name
    B200 Sport Executive 5dr Auto
  • Gearbox type
    Semi-auto
  • RRP
    £35,945
Select car

New & used car deals

Mercedes B Class

Mercedes B Class

RRP £36,215Used from £22,899
Dacia Spring

Dacia Spring

RRP £14,995Avg. savings £4,671 off RRP*
Renault Clio

Renault Clio

RRP £16,160Avg. savings £3,970 off RRP*Used from £8,795
MG MG4

MG MG4

RRP £27,005Avg. savings £7,825 off RRP*Used from £12,700
* Average savings are calculated daily based on the best dealer prices on Auto Express vs manufacturer RRP
Skip advert
Advertisement

Most Popular

Electric car battery repairs and health checks: how to keep thousands of EVs on the road
Battery health checks - Arnhem site 4 REVIVE MOBILE

Electric car battery repairs and health checks: how to keep thousands of EVs on the road

The truth about EV battery repair and why understanding state of health could revolutionise the electric-car market
Features
5 Sep 2025
Car Deal of the Day: Open wide and say R, it’s a sporty Volkswagen Golf for £210 a month
Volkswagen Golf - front action

Car Deal of the Day: Open wide and say R, it’s a sporty Volkswagen Golf for £210 a month

The Volkswagen Golf has always been a quality choice, but now it won’t break the bank, even in R-Line trim. It’s our Deal of the Day for September 5
News
5 Sep 2025
Sexy new Renault Clio cranks up the old va va voom
Renault Clio Munich 2025 - front

Sexy new Renault Clio cranks up the old va va voom

The sixth generation of the huge selling Renault Clio has finally been revealed, and it will arrive in UK next year
News
9 Sep 2025