There are many reasons. Take it to a trans shop.
Shifting of the automatic transmission should be smooth. Try changing the transmission oil and filter. If you take it to be done make sure you specify that you want the pan dropped and the filter replaced, as many places suck out the old fluid and do not change the filter.
normal atf
shifts normal with normal driving conditions when driving hard transmission stalls.have to ease off gas to go to next gear
You put it in drive and press the gas. It drives just like a normal automatic transmission.
3000
One of the nice features of the Echo is that it has a transmission fluid filter. This means you may never need to change the transmission fluid (it is not listed at all in the owner's manual scheduled maintenance). If you feel that it really does need it because you have not driven under normal conditions, you can find details on how to do it, here: http://groups.msn.com/Sorensonbrian/atfchange.msnw
A CVT is a type of automatic transmission that is very different from normal auto transmissions. CVT stands for Continuously Variable Transmission. The theory behind CVT is that there are infinite gear combinations. There are no set "gears". What I mean by this is your normal auto transmission will have 3,4, 5 up to 8 specific gears. The transmission finds the right gear and then move up or down to the next set gear depending on your driving needs. Regardless of how smooth an automatic transmission is there will still be a momentary loss of power when the gears shift. Not so in a CVT CVT's have no set gears. They start a high ratio to get you started and then roll along a cone "continuously" changing the ratio, with no power loss and "infinite" combinations, giving fuel economy increases and super smooth acceleration. The downside to CVT is the add weight.
Have you checked the fluid level? Have you changed the filter and fluid as normal maintenance?
The owners manual shows for a 4X4 automatic approximately 10.3 quarts ( 9.8 liters ) of Motorcraft MERCON V for the entire system ( transmission / cooler / lines / converter etc ) Use the transmission dipstick to set the normal operating level range
The STI, which is a version of the Subaru Impreza WRX, only comes with manual transmission. The normal Impreza WRX does come in both versions, just not the STI model
AT switchThe at switch when pushed to the right makes the transmission hesitate a few seconds before changing gears. it gives you a little more power in the gears! to the left is normal gear changing as it says (normal)
it takes just about 3 quarts for a normal oil change.