I just bought an rx7 a couple days ago and i only know a little bit about rotary engines. I was just wondering how come my car burns so much gas. I used up about half a tank of gas in about a 20-25 minute drive. I know i have to replace the exhaust system....could that be the problem? Any help would be appreciated.Thx guys.

 

what kind of rx-7 do you have? My tii gets about 10-13 mpg... thats with intake n exhaust.

 

I hope you didnt buy a rotary engine powered car hoping for gas mileage

 

i have a 1990 rx7 gtu. i nkow rotary's are spose to burn alot of gas but this is ridiculous. an escalade wouldnt' even use this much gas.

 

well the gas gauge sometimes just isnt very accurate. What's your gas mileage?

 

mine ain't up gas when i first got it and then i put an intake and complete exhaust and i got 50 more miles 2 my tank

 

I have an 88glx i get about 200 miles a tank if im lucky..16 gal i think..Is this Normal..Its non turbo all stock..I thought ya know being stock and all it would be ok..But dayam i keep reading rotary motors are more Efficient than pistons? I dont agree

 

1988 gxl. It gets MAYBE 220 on a full tank, and that's if i don't rev it past 3000. If you're driving it race car style (and who doesn't like doing that..?) your MPG is going to go down.

 

'91 GTU and I get 240/250 miles to the tank and that's with my agressive driving (redline a lot, rarely shift at 4k or below unless there's traffic).

 

I call bs...



There was never a 91 gtu. 91 models were either coupe nonturbo, coupe turbo, or convertible.

 

Maybe your car needs a tune-up, possibly clogged air filter which would cause a rich running condition, tire pressures, weight in the car, are your secondaries wired open because that would decrease fuel milage right? Maybe Oxygen O2 sensor. Even if you don't buy a rotary for gas milage who wants to drive with 5 mpg when you could 20s+mpg. Just my $0.2 cents.

 

I drive an 1989 Convertible and manage to pull 250 miles per tank, even while driving a paper route....

 

I'm well aware of that fact; still doesn't change my gas milage. The '91 n/a coupe is pretty much a GTU with some GXL extras that came standard. That and the sticker on my rear windshield says IMSA/GTU so I'll stay with calling it a GTU.