How many miles per gallon do you guys get on your SC400, On all Highway driving I got 23.8 mpg, and on surface street and highway I got 20.8 mpg...

Also, I feel the car goes faster and is more fun to drive with the ECT power mode, but is that going to take a substantial dent on the gas expenditure?

 

not if you don't punch it. all power does is make your gears hold longer and downshift when ever you punch it. also shifts more aggressively. but if you just drive normal with power it will just shift normal.

 

I get around 24 mpg, I like mobil 93 gas the best. In my tests it gives me the best milage.

I used to think sunoco 94 was good, but, mobil gives me the best average MPG

 

I been using only Modil/Exxon 93 gas and I get 18-20 mpg.
Recently I tried Sunoco 94 and my mpg improved to 22. I always thought that all gas is the same..
I dont want to start "what fuel you using" again but is there any true data showing that 94 is better? just curious.

 

I recently got 25.5 mpg mixed driving.

chevron 93 octane