I have loud exhaust on mine and I have seen deer look up from eating a quarter mile ahead, as the saying goes loud pipes save lives. I do idle down my street then kill it as soon as I get up to the garage then push it in when I get home at night though.

I have hit a few deer mostly glancing blows but the worst was when I hit a black bear with our less than 500 miles on the odometer fusion, I didn't see a thing until it was right in front of me. It was a new moon at 1130 at night black on black, I almost hit a black cow and then its black calf when I swerved to miss it one night this summer. I get to work the next day and another CO is telling us how his cow got loose with its calf the night before. Lol I had thought it was another bear or a moose same situation black on black at night but it turned its head and I saw its eye reflect just enough room st squeeze in between the mom and calf. I about had a heart attack this was in my 2000 mile on the odometer optima. Lol