I never go over or even get close to the mileage limit even on my lower mileage lease. In my case it is 16 cents per kilometre in excess of 64,130 kilometres ( just under 40k miles). My lease is for 48 months which is also the duration of the warranty. Because of the low mileage I put on my vehicles, I've never reached the end of a lease yet. I expect the dealership to begin exploring new vehicle options just after the 36 month period. That is what happened with my 2017 Platinum which had 11, 921 Kilometres (7400 miles) on it exactly at the 3 year mark when I got into the Aviator. I will have had the Aviator 2 years on October 31 and have just over 3100 miles on it. It would have been a little more were it not for the pandemic.