Car models with a little less power than actually desired are more often leasable for a more favorable amount than models with a lot of power. So it is not surprising that more and more lease cars are driving around. It’s good to know that it is indeed possible to chiptune a lease car.  Since a chiptuning can always be reversed and the standard software can always be put back, before turning in your lease car you can visit your chiptuner to put back the standard software.