Vehicle has shift paddles on the steering wheel. When slowing down, is it better for the ‘health’ of the car to downshift first (less on brake) or just brake (less on transmission). Or for modern cars does it just not matter?
On flat land I use the brakes, in the mountains or towing I use the transmission. Brakes are cheaper than transmissions, but you can burn out your brakes in the hills if you fon’t usr thr tranny.
Agree with @oldtimer_11 The paddle shift is for performance driving. They can be ignored in everyday use. The electronic controls on the engine and transmission are programmed to be better at this than the driver!
Another vote for everyday driving just leave the paddle shifters alone.