Gas Mileage....someone figure this out.....

[93 teal terror]

Well I've checked my highway mpg many many times and I've gotten anywhere from 23-30 mpg. This past week I got a chance to check my city driving and i got a whopping 13 mpg.... What gives? Im not driving it like a bat out of hell either. Just normal driving shifting from about 2500-3k rpms. Cats are on car, 02s are about a year old, stock heads,cam,intake....no codes. pro-m air meter, stock injectors, AFPR set at 37psi, fuel pump is a little noisy, tps is set at ~.90-.95....thats all I can think of...can anyone help?

 

[kn7671]

That's not horrible, but I would expect about 15mpg is the average for 80% city driving. Ford's weakness has always been fuel economy.

What gears are you running, and what gear do you drive around in through your city driving?

 

[Daggar]

You can try running lower octane gas if you're one of those that's hell bent on 93. 93 gas sends my mileage to the crapper. 89 I can't get away with anymore due to the blower. 91 seems to work perfectly. Just run the lowest octane gas you can away with without pinging.

 

[deftsound]

thats wierd your not pulling any codes...

 

[93 teal terror]

I run 87 octane, stock 2:73's. I usually keep the rpms around 1500 or so around town

 

[93 teal terror]

tdt for the evening crowd

 

[jrichker]

I get 18.48 MPG average with a commute that runs anywhere from 55-65 MPH to a stop and go crawl.

 

[93 teal terror]

I guess maybe that is avg. for strictly city driving not seeing more than 45mph or so. I just figured it would be more of a 7-10mpg gap instead of a 13-17 gap. The new mustangs are usually rated from like 19 to 26 or 21 to 27 or 28. I know both of these are avg.'s for city and highway but still I just thought the gap would be a little closer