SuperCoupe400 Posted September 8, 2006 Share Posted September 8, 2006 I've got some wierd results here. I seem to be getting 23.1 mpg as of my last fill-up (75% highway; 25% city). I say wierd because I think I used to average around 18-19mpg last time I checked (last year). It's wierd because a couple weeks back I tried out a "gas-saving technique" of keeping my highway speed down to 60mph - which yielded me 22.5 mpg. Okay, great. But this last time I only drove that way about half the time. The other half I did my normal 70-80mph + the occasional hard passing acceleration and wound up with 23.1mpg. That's why I'm puzzled. And I'm even overdue for an air filter change. The way I calc my mpg is to first do a full fill-up (til i can't squeeze one more drop in), reset my odometer, then on my next full fill-up divide my miles driven by gallons I just put in. What mpg are the rest of you getting (+ your highway/city ratio)? Quote Link to comment Share on other sites More sharing options...
Hawkman Posted September 8, 2006 Share Posted September 8, 2006 I'm getting 18-19 average. If I drive mostly on the freeway, then I'll get between 20-21. <_< Quote Link to comment Share on other sites More sharing options...
robinlow Posted September 10, 2006 Share Posted September 10, 2006 I've got some wierd results here. I seem to be getting 23.1 mpg as of my last fill-up (75% highway; 25% city). I say wierd because I think I used to average around 18-19mpg last time I checked (last year). It's wierd because a couple weeks back I tried out a "gas-saving technique" of keeping my highway speed down to 60mph - which yielded me 22.5 mpg. Okay, great. But this last time I only drove that way about half the time. The other half I did my normal 70-80mph + the occasional hard passing acceleration and wound up with 23.1mpg. That's why I'm puzzled. And I'm even overdue for an air filter change. The way I calc my mpg is to first do a full fill-up (til i can't squeeze one more drop in), reset my odometer, then on my next full fill-up divide my miles driven by gallons I just put in. What mpg are the rest of you getting (+ your highway/city ratio)? My car sometimes go on the track, and usually is driven with little traffic and on freeway. (Stage III Clutch) I have a 2JZ-GTE Greddy T78 turbo and 1000cc injectors. My average highway mpg is 24. (not much traffic) and on the track is 15mpg. (with turbos constantly in use) Quote Link to comment Share on other sites More sharing options...
t0ked Posted September 11, 2006 Share Posted September 11, 2006 I usually get 20mpg with 50/50 highway city driving, about 24mpg mostly highway. As long as the car drives well, who cares? Maybe there was slight reprogramming of the ECU. Quote Link to comment Share on other sites More sharing options...
chuckebruce Posted September 11, 2006 Share Posted September 11, 2006 I've got some wierd results here. I seem to be getting 23.1 mpg as of my last fill-up (75% highway; 25% city). I say wierd because I think I used to average around 18-19mpg last time I checked (last year). It's wierd because a couple weeks back I tried out a "gas-saving technique" of keeping my highway speed down to 60mph - which yielded me 22.5 mpg. Okay, great. But this last time I only drove that way about half the time. The other half I did my normal 70-80mph + the occasional hard passing acceleration and wound up with 23.1mpg. That's why I'm puzzled. And I'm even overdue for an air filter change. The way I calc my mpg is to first do a full fill-up (til i can't squeeze one more drop in), reset my odometer, then on my next full fill-up divide my miles driven by gallons I just put in. What mpg are the rest of you getting (+ your highway/city ratio)? I have a 1992 SC400. I got 19.3 mpg on my last tank (75%city; 25% highway). Quote Link to comment Share on other sites More sharing options...
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