CVT is not a new technology. In fact it is older than AT.
In CVT, actually there is no gear based speed control. Instead, there will be two wheels of continuously variable diameter and a pulley will connect the primary wheel to the secondary wheel and depending upon the position of pulley, the transmission ratio between the two wheels can be varied and thus the necessary torque to speed conversion is attained. I found this picture in the net.
CVT is in use in gearless mopeds already. Only technological advancement is that pulleys have been made strong enough to pull heavy cars instead of small mopeds.
CVT is supposed to provide the best fuel efficiency as it automatically selects the best transmission ratio for a given speed that yields maximum fuel efficiency.
Nissan Sunny has a CVT variant and it has better fuel economy in comparison to manual transmission.
Small downside is, some people had written that they notice a creeching sound at times due to pulley effect.
Otherwise, all seems to be thumps up for CVT.
This reply was modified 3 years, 11 months ago by Rajesh V.