 I am a 6 time Infiniti owner who made the ill fated mistake of leasing a loaded (every possible option) 2014 Q50S. I am not going to get into the widely reviewed issues with the rushed out, garbage InTouch system or the take you life in your hands DAS steering wonder.  On the good side, the car is very attractive, well designed and performs well. That's where it ends.  The noise level on the inside is equal to that of riding on a train.  The factory supplied (long gone) run flat tires are noisy as hell, are blow out prowen (4 in 2 years). The passenger side seat rattles, the backup and front cameras are total mud and have long delays going on and going off.  All of these issues when taken into the dealer and logging complaints with Infiniti have been answered with the typical Infiniti response " CAN NOT REPLICATE"Now 27 months into a 39 month lease my car has been the shop for 5 weeks.  The brake pedal will sink to the floor after a 20 mile or so drive. The car does stop, but it stops long and feels unstable. The dealer has replaced the master cylinder after 3 times of doing nothing except for giving me the old " CAN NOT REPLICATE" Now it is the shop again waiting for define intervention from Infiniti.On top of that there is well known issues with the airbag system on this car. 3 Recalls later and 2 malfunction lights I can't say with confidence that they work.In the end, if you are looking for a quality car in the $55,000+ range and you have any value for your sanity and the life of you and your loved ones, run away from this car, this manufacture and their dealer network.  I thought I would never write such a review on Infiniti.  They have betrayed me and thousands of faithful followers.