I have a 2018 RS 400 with 54000 miles on the clock. Brake light on dash came on and never went out. It's in the shop at the moment to get a new brake booster which costs $2400 to fix. Infiniti is replacing it but if the light doesn't go out then they will have to replace the ABS module. Infiniti is paying for the booster but not the ABS module if that's bad. That's $2000 to replace. My car is out of warranty but the service righted got there to take care of the cost of either. Thanks to him for that. He told me Infiniti knows there is a problem with this and just says replace the one and or both. This is a heads up to all. Absolutely love this car so I want all to work well. The only other problem I had was a bad turbo. Infiniti took care of that at no cost to me. Other than these two things the car has been trouble free.