Sorry it took so long to reply back. Been very busy.
Originally we thought it was a cold weather problem. It did warm up shortly after and the smell went away. However it has been warmer and my wife says the smell has returned, I will get a chance to drive it tomorrow and try to look it over again.
sg021, this originally surfaced when it was cold during long warm up times. The wife is only 5 minutes from work so it's hard to tell if it went a longer distance if it would go away.
JeffS, ours comes through the vents as well. As far as tar or other assembly oils I would hope that it's burned off already. It worries me as we had an Edge which had a leaking axle seal when new. Smell is similar but the Edge was horribly strong and never went away.
I have watched since and never seen any drips on the ground and the engine oil is still full.