ha im at 27? with the light almost on, i only do city driving, 10 miles here 10 miles there,

 

wow. How do you get numbers like that? All stock there or any special stuff (like the cold air intake the guy above mentioned)?

I barely broke 30 mpg on a long trip where I cruised at 73 mph on an entire tank of gas.

2003 EX I4 63,000

 

I was aiming above 400 with only motorway cruising.

what mods have you got??

 

got 49.96 Litres in the tank and i had done around 370 miles.
comes up to 33.8 mpg if my calculation is correct
??

 

cold air intake will help alot, so i ended up with 289 miles at 23mpg.

 

That's imperial gallons. It's about 28 miles per USA gallon.

 

Only engine mods are removed air intake resonator and a DIY oil catch can between the valve cover and intake manifold, almost forgot, no A/C and no power steering systems in the car. If it helps, the intake manifold and EGR passageways and ports were thoroughly cleaned recently. Otherwise, no mods, standard NGK plugs, new cap and rotor, and a fresh valve adjustment.

That 457 was mostly city, with about 25% highway in temperatures between 0* and 30*F. I got 515 miles all highway driving to Florida and back.

All on a standard F23A1 with 194,000 miles and a lead footed driver