We have the same problem with our MY2016 GLC300. In the morning or after idling, we have a strong odor of gasoline.
I brought it to the dealership but they said they couldn't find anything. But, I don't believe one word from the dealer. They are lying @sswipes. I bought the SUV under the certified pre-owned program which means I paid a premium for it and it's extended warranty. The dealer denied repair (or said that they could not find a problem with) at least 3 things I found wrong with the car so far. I've had several Mercedes in the past and will look at another brand next time.
I brought it to the dealership but they said they couldn't find anything. But, I don't believe one word from the dealer. They are lying @sswipes. I bought the SUV under the certified pre-owned program which means I paid a premium for it and it's extended warranty. The dealer denied repair (or said that they could not find a problem with) at least 3 things I found wrong with the car so far. I've had several Mercedes in the past and will look at another brand next time.