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!!