So I’ve noticed if I have my mazda in manual mode, it won’t downshift on some pretty steep hills that normally cause it to kick down from 6th to 4th gear. It would seem that if it would normally have to downshift 2 gears to handle the hill, that keeping it in 6th with manual mode could be straining/lugging the engine with too high a ratio. It still goes up the hill just fine without losing any speed. But why would it normally downshift from 6th to 4th, but have zero need to in manual mode? I’ve been concerned about not letting my car downshift when it normally would be and if it could be having any negative effects on my car.