Mine pretty much gets a C-, for holding heat.. Like ill drive around and the car will be almost hot insdie, but as soon as i get out it could be about 10 minutes later and when i come back in the car its already chilly with outside temps around 40. Is it pretty much a honda thing on having bad seals? Cuz now that i think about it most all hondas ive seen kinda suck stayin warm inside. what about u guys?

 

mine holds heat pretty good if i dont leave the door open long when i get out, if i hurry and shut the door it holds it pretty good...

 

All cars are vented (so you dont pass out from exhaust fumes or lack of fresh air). Get used to it.