I have a 2013 SV, and live in a area where deer mice are prevalent. Drive my car daily except weekends. Discovered evidence of a mouse getting into the cabin of my leaf (droppings on top of the dash and in the cup holder. I tried to figure out where he is getting in. It must be from the "engine" compartment through the firewall into the dash area. But I could not find any holes, either existing by design or something chewed through (they way mice do). Some cars have holes in the firewall that are sometimes plugged with a rubber grommet or something. A mouse can chew through those (ask me how I know), but I didn't see that sort of thing in the Leaf though there is a fibrous cover on the front side of the firewall that makes it hard to see the metal behind it. Does anyone know the most likely place for entry on a Leaf or where to look?