Yes and yes.
When shifting, no need to let off the gas. Just make sure not to hit the rev limiter.
When cruising, switching between auto and manual, the transmission will stay in the same gear it was in before the switch.
I have noticed in auto while switching to manual my CX-9 drops a gear down. I have never tried switching modes while accelerating though. Maybe the vehicle senses coasting and factors that into a gear drop when switched to manual???(boom04)
When coasting or slowing if you put it in manual it will downshift one gear automatically. If you use it to slow forward movement it saves wear and tear on your brakes and helps prevent rotor warping from overheating associated with stop and go traffic.
I find it VERY useful for traffic and hilly roads. Not to use the engine for slowing, but to have more control in stop and go, and keep the trans from hunting over hills. Also a lot of fun to get max acceleration.
Leave it in D. Manumatics are a waste of time. The shift logic on the CX-9 is one of the best anyway, it always seems to be in the right gear.
Yeah, cause transmissions are so much cheaper than brake pads and rotors.
Never downshift to slow a vehicle. Only do it to access more power out of a turn.
At first I was peeved by this sarcastic remark, but did some digging. Although you can safely use the transmission of your CX-9 to downshift to slow your vehicle because it is equipped with a tranny cooler, it is not recommended. This engine braking can cause excess wear. Thanx for the tip!(iagree)