A car performs best at high altitudes because of?

Question

this is one of my teachers questions help me please i need an 100%

Answer 1

a car performs WORSE not better.

There is less oxygen in the air.

Answer 2

Wrong...................

High altitude reduces cylinder pressure because there's less oxygen in the air...less dense.

Answer 3

that doesn't even make sense there is less oxygen up there so it would perform worse in a higher altitude the air is less dense so it would be harder for the car to get the right amount of oxygen to perform at its peak so your teacher is wrong here