 purchased the vehicle new- love it but dealer service and backing leave a lot. Had it in for new wheels as the old bubbled and were replaced, no problem. Asked to check brakes- OK.  Less than 3000 miles later- new brakes, rotors etc.  Told underneath lots of rust- I asked why?  They had no answer. Less than 1000 miles later, needed rear muffler due to underneath rust. Unfortunately, now out of time on warranty (miles are way under).  Even with extended Infiniti warranty neither Infiniiy nor the dealer will address why there is so much rust underneath the vehicle. It has been no other places that any other vehicle I have owned has been. Love the SUV but probably will not buy another Infinity.