I have owned various high end vehicles and have always found them to be well constructed and a pleasure to drive. That is, until my BMW 750IL. During the warranty period I had to make numerous visits to service for warning lights etc. and the dealer mechanics could never identify a problem. That is, until the car was just outside the 50K miles warranty. Then the problems started en masse. At 52K, major engine repairs (valve seals) and three of the four electric window controls failed. About 1K miles later had to repair ball joints, leaking oils components, battery, etc. My view, stay away from BMW at ANY cost. They claim superior enginerring but exact opposite in my case.
I have leased 7s for 25 years. This is the very best by miles. The X drive showed its value last terrible winter. I haved drived the car for 10 months and hasn't been in for repairs. No bugs. Past 7s have had a number of technical problems and a return for service. This is an exceptional auto and is fun to drive with comfort and safety . The I drive is much improved compared to past models. it is very well worth the cost. Highly recommended.
I owned a 2005 BMW 745i, which I considered the "Ultimate Driving Machine" prior to purchasing the 2012 BMW 750 Li X. Shortly after purchasing the vehicle, I noticed the wind noise and road noise was almost unbearable. I complained to the service advisors and was told that either they couldn't hear any unusual noise, then it was the road, then it was the run-flat tires. The adaptive headlights provides poor night vision on dark roads, drivers seat material worn excessive at 40, 000 miles, there is vibration during takeoff, there is little to no storage space for cell phones, etc, in the console or glove boxes. When steering wheel is adjusted for me, mileage, temperature, and navigation controls are obstructed. vehicle feels heavy, bulky, and requires a firm grip handling. Cargo space is rather small for such a large sedan.
Got my 750i a year ago. Car was from 4 years lease program. BMW Canada provides extended warranty on it. On delivery there were quite a few problems ( thermostat, knocking in steering column, alignment, weak front drive shaft). BMW fixed everything without questions. After one year of owning have no problems at all.