Trong youtube cũng có comment như vậy, nó trả lời như bên dưới.
Driving in manual mode - agree, it will be better for a 0-100 timed run. Shifting to manual mode to make it longer to up-shift in a turbo-diesel? No. Verna 1.6D AT's D mode shifts late when you floor it. It actually shifts so late that there is no usable power left to continue the punch which it had, in the 3000rpm region. So, shifting to manual mode is necessary to make the shifts earlier, so that there is continued punch to accelerate is quicker than D mode with WOT. Tried and tested. Manual mode would be useful in an NA petrol to delay the shifts than D mode. In a turbo diesel, we don't want the rpm to climb up to useless high rpm region, unless you have an aggressive remap to jack up the FRP in the higher rpm range.