What is the difference between 4AT and 6AT?

[BraxtonFitz]

4AT means the car has 4 forward gears, while 6AT has 6 forward gears. The gear ratios in 6AT are arranged more closely than in 4AT, meaning the difference between adjacent gear ratios is smaller. This results in smoother shifting and slightly better fuel efficiency in terms of driving experience. The specific differences are as follows: 1. Different number of gears: 4AT is the abbreviation for 4 automatic forward gears (excluding reverse gear). 6AT is the abbreviation for 6 automatic forward gears (excluding reverse gear). 2. Different transmissions: The more gears an automatic transmission has, the smoother the shifting will be, and the more gradual the power output curve. When the number of gears increases infinitely, it forms what is called a continuously variable transmission (CVT), with a power output curve that is a smooth arc. From a fuel economy perspective, 6AT models tend to have better fuel efficiency. However, it's important to note that if you live in an area with many mountainous roads and frequent uphill and downhill driving, a 4AT might be better as it reduces the frequency of gear shifts.