I am just wondering if anyone else has had the same issue with the new A Class? I have had the car since Sep 18 and have had this happen a handful of times. My thinking is that the car should sense the key is there and allow the car to be unlocked by the handles if accidently locked by swiping the door handle (kids etc!). My car has been in with my local dealership and after initially being tol it as a known fault I have now been told that MB have said it is the standard operation. An email today states: "It is possible and normal to be able to lock the keys in the car. The behaviour was changed with the introduction of DAS4 so only the driver’s door and the door where the lock command comes from need to be closed. By inadvertently operating the keyless lock sensor on the handle on the door it can be locked as it is closed. This is no defect in the sense of warranty. Unfortunately this is confirmation that a key can be locked in the vehicle and that as there are no component failures in this case" The Customer Service rep I spoke to prior to this email told me that they 'do not have the technology' to sense the key is in the car - I said I find that hard to believe as that's the whole point of Keyless Go! He also said if the the key is inside my bag on the front seat the car won't sense it - which it does, every day! Any advice would be appreciated! Thanks in advance.