So every year since I bought my CLA (2014) when it gets cold and i turn the heat on the cabin gets a gas smell that does not go away. I have told my local dealership and others this happens & they don't ever seem to think it is an issue. Mind you I have had tons of engine issues, been in the shop many times, once for almost 2 months while they replaced cracked heads and gaskets etc. and yet the dealership still thinks my car is perfectly fine. I always feel undervalued since I have the entry level Mercedes and they don't pay much attention to my issue. Any thoughts and or suggestions on how to handle this? Its winter so my car is going to smell like gas for a couple of months & I don't think it is right!!