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Thymeclock · 03-09-2010, 06:04 PM

Hi,

I also have an '09 Aveo. (I originally started the other thread.)

My latest attempt at bettering the mileage is to try to get the car into high gear as soon as possible and as much as possible.

I think the whole issue is related to the transmission. The good news is that it's a 4 speed Aisin transmission and they are known to be excellent or trouble-free. It shifts so smoothly I can't tell with certainty where the shift points occur. (Would anyone know for certain? I know what the gear ratios are, and they are typical, not anything unexpected for a 4 speed automatic.)

The bad news is that fuel consumption is high, apparently in the lower gears. The car supposedly gets very good mileage in highway driving, but that means being able to stay in high gear. This is often impossible or not easy to do in city traffic. So far we are very happy with it as a car that is used for commuting, except for the disappointing FE in local driving.

03-09-2010, 06:04 PM	#4 (permalink)
Thymeclock Banned Join Date: Dec 2009 Location: NY Posts: 865 Thanks: 29 Thanked 111 Times in 83 Posts	Hi, I also have an '09 Aveo. (I originally started the other thread.) My latest attempt at bettering the mileage is to try to get the car into high gear as soon as possible and as much as possible. I think the whole issue is related to the transmission. The good news is that it's a 4 speed Aisin transmission and they are known to be excellent or trouble-free. It shifts so smoothly I can't tell with certainty where the shift points occur. (Would anyone know for certain? I know what the gear ratios are, and they are typical, not anything unexpected for a 4 speed automatic.) The bad news is that fuel consumption is high, apparently in the lower gears. The car supposedly gets very good mileage in highway driving, but that means being able to stay in high gear. This is often impossible or not easy to do in city traffic. So far we are very happy with it as a car that is used for commuting, except for the disappointing FE in local driving.