I just wanted to know the optimal shifting points to do 70mph comfortably. Should the car be at 2500-3000 rpm in 5th gear at 60-65 mph? I typically shift at or around 3k rpm in every gear, and the car redlines around 6500rpm

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That is a typical RPM at that speed for most 6-speed 4 cylinder engines. The reason for this is that they have a much lower power output at lower RPMs (due to lack of torque), and the engineers want for you to have SOME acceleration to get up little hills.

Some cars came with this light to help the driver know when to shift to the next gear. IE: 1st, 2nd, 3rd and so on. It will not indicate when to downshift to a lower gear. It's main function was for optimal mileage and proper RPM shifting. Happy driving.

Hello. Welcome to FixYa. I am Toyota Ed, and I will be assisting you today.

The Overdrive function allows the transmission to shift an extra time, sort of like selecting 5th gear in a 5 speed manual transmission. The Overdrive, when used, will save you gas, as the engine is no longer maintaining a high RPM at normal driving speed. Look at the tach whilst driving about 45 mph, and engage/disengage the OD. You will see the tach RPM raise when the OD is off.
More RPM = lower fuel mileage,

The ECT is a different circumstance. The ECT button is used primarily when you have a heavy load in the car, or are towing something. All the ECT button does, when it is engaged, is lengthen the shift points as the transmission upshifts. Normally, the transaxle will shift into 2nd gear at 18-21 mph. When the ECT is engaged, the transaxle will shift in the area of 22 -24 mph. In short, the ECT just makes the time to the 1-2 and the 2-3 upshift longer, to compensate for the additional load being carried/towed.

I hope my assistance answers your question.

Thanks for choosing FixYa today!

It is pretty close, but doing the math....
3900 rpms 5th gear .814 diff gear 4.3 tire rpm = 1114
stock 91 tire size is 185/60-14 circumference = 71.31 inches inches/min=79457 mi/min=1.254 mi/hr=75.23
Completely stock, 3900 rpm gives you 75 mph. not the 70 you were claiming, but you could have smaller then stock tires (one inch less of diameter gives you 72 mph at 3900).
Hope this helps, Lars

I uually shift into 2nd at around 10 mph 3rd at 25 4th at 33ish and 5th at 40. I get 30 mpg on a 2006 Aveo which only has a 27 mpg rating for my car. The high way is a totally different story. I dont look for gas mileage for quickness. But If you want the recomened shift points look in your manual. I learned the early shifting tric from my 01 focus. It had a shifting light. I got 33 intown mpg with that one

Replace transmission.

As a response to solution #1 these cars do have an overdrive while in D-4, mine was shifting in and out at 70 mph until it finally quit and the rpm is now 3100 at 70 mph insted of 2700. The car still shifts 4 full times just not the fifth-OD. I still can't find out what fixes this problem either.

That is normal,If you do the same speed in 4th gear the rpm's will almost double.

The rpm's will repond faster in a manual than an automatic.

In a manual the engine supplies the power required directly to the gear that you have selected thus the engine rpm's will increase or decrease as needed.

You should have another gear "5th" at 70mph your tacho should read about 2500 rpm.
Make sure you don't need to depress something or push the gear stick against a spring to select 5th.
Is there a gear layout on top of the gearstick knob, do you have 5th gear on there?
The highest gear ratio is a little over 1 to 1 so at 70 mph you would expect 3500 rpm, but, it is a little over 1 to 1 so it will be closer to 2500rpm.