I notice when parking in the garage if i've given it a bit on the way home late at night. I'm not sure its a problem - I just think its the combo of brake smell, tyre smell, engine heat etc etc from giving it a hiding. If you have ever smelt a race car (like a Nascar or an OZ V8 Supercar at a pit stop or after a race it's a similar but more diluted smell. Might just show that you have been exercising it appropriately.
Unless you have a particular problem I don't think it's a bug - it's a feature.