Question that's been bothering me for a while: I leased a 2010 Mazda 3i last year and have loved it so far, been a great car, gets fantastic mileage etc. Only thing I noticed that really annoys me is when driving in it, typically on the highway or at speeds exceeding 40 mph, my ears will pop. It's not too dissimilar from being in an airplane or driving up somewhere with high elevation. I've never had this issue with driving in a car, is it something that newer Mazda models suffer from? I don't know much about cars, so any help would be appreciated.