Are 3 speed automatic transmission get bass gas mileage.?

Question

So i have a 1995 pontiac grand am with a 2.3 4 cylinder has the 3 speed automatic i get around 280 miles to the tank if it was a 4 speed i would probably get 350 to the tank correct?

Jay P · Accepted Answer

Depends on the gearing of the transmission and what speeds you normally drive. If you drive mainly city, the mileage would likely be very similar. If you drive mainly highway, the fuel economy would likely be better. This is assuming the 4 speed has an overdrive top gear while the 3 speed does not.

But to get 70 additional miles per tank only because of one extra transmission gear is unrealistic. The difference would not be that significant.

But to get 70 additional miles per tank only because of one extra transmission gear is unrealistic.  The difference would not be that significant.

thebax2006 · Answer

No that's not correct. On top of that by the time you replace the transmission in that old POS you'll spend more money then you could ever recover in any gain in mileage.

? · Answer

not saving much money to squeeze a few more miles to a tank for the work needed to change over to a four speed

Anonymous · Answer

NOT CORRECT, because in top gear both yield about the same rpm. To get significantly better mileage the 4-speed would also need an overdrive. Even then, it wouldn't get that much better mileage.

Are 3 speed automatic transmission get bass gas mileage.?

4 Answers