The day after I bought my 2016 Smart Passion, the check engine light came on shortly after starting the car at work to head home. It stayed on constantly for a few days then cleared for a few hours. The dealer has looked at the car, read the code and reset it. The code was for gross leakage on canister system (or something to that effect). They are not sure what the problem is, but tell me that I'm not the only one who has reported this issue to smart. They are working with a regional rep to see what the next course of action is... as they are somewhat baffled by the fact that the condition will clear for a day or two before reappearing. Anyone else had something similar?