Car jerking violently and losing power while on motion

15 Nov 2019 •
The other day my Mercedes B180 just suddenly jerked and then lost power despite `I trying to press the gas a bit. Then a message came on the dash saying that "Transmission problem, please visit a workshop". After that, I slowed down, eased off the road and switched it off and on. It then just moved well to the house. Next day, it was jerking again. What could be the problem?

mercedes sat nav update

15 Nov 2019 •
Hi, I've just bought a second hand Mercedes benz B class diesel B180 CDi sport 2010 (I'm so excited) and collect tomorrow. The car has the sat nav discs with it but they are the 2010 ones and need to be updated. My daughters friend has a 2017 Merc A class with discs, can I borrow his discs to update mine or doesn't it work like that? Thanks