Oh yes! We have a certified 2011 MKX Priemium and have had it for a year. The dealership has replaced the front seal and solved the leaking oil problem. While in the process they discoverd that there was zero, notta, none, no oil pan gasket! Added one and couldn't believe that it came that way, they supposedly escalated the issue. When the front seal needs replacing, the engine has to be dropped down for access. I've had a drone sound at hiway speed from the front drivers side ever since, had the service mgr ride with me and he too heard that and clicking when applying brakes at low speed. Said he would get it in. That was two weeks ago!! So we'll see what happens and will post when this issue is resolved. Still like the vehicle, just can't understand why service personnel can't get it right the first time.