No, that would apply if you bought the car. That is how the manufacturers coerce people into paying for exorbitant service costs. JLR tried that with one of my buddies 5k and a year old and the first service cost £1100. He told them to stuff it. Given that a land rover has a high probability of breaking as you drive off the forecourt. Its a moot point.
Hyundai are not going to void any warranty with their biggest customer. Besides, its not your car, its a lease car, and not your worry.