B Class W245 CVT Auto Issue

Discussion in 'General Discussion' started by stvnshrmptn, Mar 28, 2014.

  1. stvnshrmptn

    stvnshrmptn New Member

    Messages:
    23
    Joined:
    Mar 15, 2014
    Since I started looking for a 2010/11 B200 auto, I have come across a few threads on different various forums, relating to the gearbox going bang sub 40k miles! The plan is for this to be the family car for a few years and then keep it as a second car, but with the ~£6k repair costs I've read about, I'm getting a little nervous.

    I've tried to understand if this was a 'dodgy batch' and was rectified after a certain year, but to no avail. Surely MB would not have produced a problematic gearbox for 7 years?

    One MB specialist told me that the CVT box issue was resolved after 2009, another told me that they changed from a 6G to 7G after 2010, which resolved the issue.

    Are either of these statements true? I can't see any evidence if a W245 having 7G?

    HELP!!
     
  2. miro

    miro Hardcore MB Enthusiast

    Messages:
    3,444
    Joined:
    Mar 1, 2004
    Location:
    Sydney NSW Australia
    Car:
    W203 slightly modified
    There is no such thing as 6G and 7G in the CVT. It is a software controlled variable cone with a slipping (rubber) band.

    I drove a CVT for well over 130,000 km and it never had its required oil change at 60,000 and 120,000. The mechanic told me to keep an eye on the performance and leave it alone until it showed signs of not working well.

    With my B-class I intend to change the transmission oil much closer to its proper interval.If you are really worried then purchase a used W246. They are totally different designs from the early CVT.

    Dont think I would be taking the advice of someone who fails to understand the basics of CVT.
     
    1 person likes this.
  3. ckember

    ckember Hardcore MB Enthusiast

    Messages:
    815
    Joined:
    Feb 9, 2005
    Car:
    CLS 350 CDI Shooting Brake AMG Sport
    I did over 60k miles in my 60 plate w245 with no real issues with the cvt apart from the slow responses and poor combined mpg. The cvt box is the same that ford used at that I believe
     
  4. OP
    OP
    stvnshrmptn

    stvnshrmptn New Member

    Messages:
    23
    Joined:
    Mar 15, 2014
    Thanks for the comments. I'm sure the issues are minimal, but it's the first thing that pops up on all forums when looking fir this model!
     
  5. Benzowner

    Benzowner Hardcore MB Enthusiast

    Messages:
    2,375
    Joined:
    Jun 21, 2004
    Location:
    Bristol
    Car:
    B180 CDi W245 in Silver
    Currently driving a B180 W245 82k on the clock with no gearbox issues. It does say in the service book to change the gearbox oil every 40k miles which I have done. IMO there are too many B Class cars on the road without issue, and maybe one or two with issues which we hear about. :D
     

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