^^ thats what i was thinking as well. you're not suppossed to shift to neutral until the car comes to a complete stop
That's like saying "don't press the clutch until you come to a complete stop"
When you brake (in a normal gear'd auto transmission), the car takes it upon itself to get out of overdrive, and shift down to the lowest possible gear (99.9% of the time for in-city driving, it's 2nd gear) When the car is in mid-shift (or mid ratio-change for a CVT) and you shove it into Neutral, the car will jerk a bit since you just disconnected the transmission from the engine, and the crank loosened up and lost momentum. There's no problem with doing it, but if it stays a constant problem, then make sure you tell us again. Do tell us if you hear any sounds while you shift into N- if not, then I don't think there's anything to worry about. Drive safe (Y)
Reply By : Zakarian on 12/5/2008 12:32:10 PM
I have VITZ A/T and I also do change gear from D to N while at some sliding downward at bridges to save petrol. My car did not five any jerk. I change the gear from D to N and vice versa but no jerk at all.
You know, if you coast (let go of the accelerator completely) with an auto transmission when you're in Drive, it uses absolutely zero petrol- ZERO. The injectors turn off, and the engine just runs off of it's momentum. If you switch it into N while you're in motion (or on a bridge in your case), when you put it back into D, the amount of fuel the engine uses to get it back up to moving rpm wastes the purpose of shifting into neutral in the first place. I guess you can save petrol by shifting into N at stop lights, but still i think it'll use the same amount.