MPG poll

[Phokus]

That's with about 6-9 miles of city driving and the rest all highway a bit over 52 miles highway

I think I'm going to try to attempt to break 50mpg when it gets warmer
(requires you to drive like a granny though [if not slower ])

[Swiftbow]

Originally Posted by Phokus

That's with about 6-9 miles of city driving and the rest all highway a bit over 52 miles highway

I think I'm going to try to attempt to break 50mpg when it gets warmer
(requires you to drive like a granny though [if not slower ])

Anybody known to hit 50mpg?

Best I've got is 46 but it's typically in the low 40s. Maybe after LaborDay when the fuel converts to summer blend?

As a side interest, been running a check on the computer display, found it's averaging ~5% high.

Doug

[SVTFOOCUS]

Well I drive a 03 SVT and on loooong trips.. I can squeeze out 34mpg with the cruise set at 75, not bad at all I think. But in town.... um yeah not so good

[FociBoi121]

out of the 13.2 tank when i guess 11.2 has been used the light comes on i was still pulling about 258-262 at the check gas light with stock engine and cold air


now with the most common bolt ons,(Cold air.4-2-1 long tube,2 & 1/4 catback and flex) i recently changed: fuel filter, spark plugs and wires out and.............

one full tank so far i've gotten after upgrade or replacement

265.1(thats with mostly 80 degree weather no humidity or rain, a/c on,and heavy on the pedal on the on & off ramps and some red lights no speeds above 75mph highway)

thats 23.7 mpg average being hard on the car vs my old average of 258(23.03 mpg) and that was stock with cold air being nice to the car

i'll repost on the tank when im light on the car(below 3500 ATx shifts light on the pedal)

[MarkZX3]

I drive a 2003 Focus ZX 2.0 Zetec DOHC, with a 5-speed trany.
I drive pretty much all highway,
I set the cruise at 65mph (always)
I drive 50 miles round trip five days a week (we drive the wifes mini van on weekends).

I bought the car used a couple of months ago and I was figuring on around 32 to 34mpg. When I bought the car I got around 25 to 26mpg. So I starting working on tuning it up, so I replaced,
Spark plugs,
plug wires,
fuel filter,
air filter,
PCV valve,
Changed oil and oil filter (5W-20)
Changed trany oil, Ford Synthetic manual trany oil,
Crank case vent filter,
Tried a couple of tanks of gas with gumout injector cleaner,

I've tried and tracked 10 FULL tanks of fuel, I ran each tank from full to at lest the low fuel light came on.

So, to say the lest I'm not happy with the fuel mileage. My old Taurus got 25mpg, it had EVERYTHING! V-6, PS/PB/AC/ DOHC, climate control/ ect... So I buy a compact with the thinking I could get better gas mileage for a work car??

Tank #1
Exxon (87) (little general)
307 miles,
10.4 gallons,
29.5mpg
___________________________

Tank #2
Exxon (87) (little general)
308 miles,
11.5 gallons,
26.7 mpg
____________________________

Tank #3
Exxon (87) (little general)
278 miles,
10.4 gallons,
26.7 mpg
_____________________________

Tank #4
Speedway (87)
294.5 miles,
11.2 gallons,
26.2 mpg
_____________________________

Tank #5
Exxon (87) (Milton Interstate Exxon)
271.7 miles,
10.0 gallons,
27.17 mpg
"Note to this tank of fuel,
I changed the fuel filter and lost some fuel during the change"
____________________________________________________

Tank #6
Exxon (87) (Milton Interstate Exxon)
304 miles
11.1 gallons,
27.4 mpg
_________________________________

Tank #7
BP (87)
350.8 miles,
12.1 gallons,
28.99 mpg
__________________________________

Tank #8
BP (87)
312.8 miles,
11.4 gallons,
27.43 mpg
__________________________________

Tank #9
Gomart (89) (29th street Gomart)
302.5 miles,
10.77 gallons,
28.08 mpg
___________________________________

I'm running the tenth tank of fuel in the car right now!
Gomart (89) (29th street Gomart)
_______________________________________________

2729.7 miles
98.87 gallons
27.6 mpg Average (highway mileage)

[Tryal]

30+ avg

FS CAI, FS exhaust, F2 head, sct x3 93 oct tune... only time i see less is if i drive it hard constantly

[Swiftbow]

Originally Posted by MarkZX3

...
I bought the car used a couple of months ago and I was figuring on around 32 to 34mpg. When I bought the car I got around 25 to 26mpg. So I starting working on tuning it up,...

... to say the lest I'm not happy with the fuel mileage. My old Taurus got 25mpg, it had EVERYTHING! V-6, PS/PB/AC/ DOHC, climate control/ ect...

I have to agree, with primarily hwy miles and 65mph cruise, that mileage is deplorable. I concur with you're initial thoughts as well in that I would have expected low to mid 30s with that driving regiment.

How is the oil level doing? Even if it's not burning, I'd check compression. I'd also look at decarbonating with either the MMO soak trick or water through the throttle plate.

Doug

[FociBoi121]

Originally Posted by MarkZX3

I drive a 2003 Focus ZX 2.0 Zetec DOHC, with a 5-speed trany.
I drive pretty much all highway,
I set the cruise at 65mph (always)
I drive 50 miles round trip five days a week (we drive the wifes mini van on weekends).

I bought the car used a couple of months ago and I was figuring on around 32 to 34mpg. When I bought the car I got around 25 to 26mpg. So I starting working on tuning it up, so I replaced,
Spark plugs,
plug wires,
fuel filter,
air filter,
PCV valve,
Changed oil and oil filter (5W-20)
Changed trany oil, Ford Synthetic manual trany oil,
Crank case vent filter,
Tried a couple of tanks of gas with gumout injector cleaner,

I've tried and tracked 10 FULL tanks of fuel, I ran each tank from full to at lest the low fuel light came on.

So, to say the lest I'm not happy with the fuel mileage. My old Taurus got 25mpg, it had EVERYTHING! V-6, PS/PB/AC/ DOHC, climate control/ ect... So I buy a compact with the thinking I could get better gas mileage for a work car??

Tank #1
Exxon (87) (little general)
307 miles,
10.4 gallons,
29.5mpg
___________________________

Tank #2
Exxon (87) (little general)
308 miles,
11.5 gallons,
26.7 mpg
____________________________

Tank #3
Exxon (87) (little general)
278 miles,
10.4 gallons,
26.7 mpg
_____________________________

Tank #4
Speedway (87)
294.5 miles,
11.2 gallons,
26.2 mpg
_____________________________

Tank #5
Exxon (87) (Milton Interstate Exxon)
271.7 miles,
10.0 gallons,
27.17 mpg
"Note to this tank of fuel,
I changed the fuel filter and lost some fuel during the change"
____________________________________________________

Tank #6
Exxon (87) (Milton Interstate Exxon)
304 miles
11.1 gallons,
27.4 mpg
_________________________________

Tank #7
BP (87)
350.8 miles,
12.1 gallons,
28.99 mpg
__________________________________

Tank #8
BP (87)
312.8 miles,
11.4 gallons,
27.43 mpg
__________________________________

Tank #9
Gomart (89) (29th street Gomart)
302.5 miles,
10.77 gallons,
28.08 mpg
___________________________________

I'm running the tenth tank of fuel in the car right now!
Gomart (89) (29th street Gomart)
_______________________________________________

2729.7 miles
98.87 gallons
27.6 mpg Average (highway mileage)

yeah well w/o doing the pcv valve i did recently flush and new filter the ATX tranny the cold air filter was replaced with K&N also did seafoam before the fuel filter and oil change and spark plugs
your 27 is great compared to my 23.7
i'm 215lbs with at least 70lbs of subs and box in the back too

i'll look into the pcv and see how its looking also my new valve cover gasket is leaking oil into the first cylinder on the left so it def affects gas mileage and needs to be redone/reset

[MarkZX3]

Originally Posted by FociBoi121

yeah well w/o doing the pcv valve i did recently flush and new filter the ATX tranny the cold air filter was replaced with K&N also did seafoam before the fuel filter and oil change and spark plugs
your 27 is great compared to my 23.7
i'm 215lbs with at least 70lbs of subs and box in the back too

i'll look into the pcv and see how its looking also my new valve cover gasket is leaking oil into the first cylinder on the left so it def affects gas mileage and needs to be redone/reset

My car had a K&N air filter in it when I bought it (I didn't know it at the time) and being the car was used I just went got a bunch of tune up stuff and a regular air filter. Seeing how I had the new filter I just went ahead and changed the air filter out (I had already noticed the low gas mileage)

Anyway, I'm thinking if the K&N air filter increases air flow, then to keep the fuel to air ratio correct wouldn't the ECM have to increase fuel as well? and would that decrease MPG's?

Or! does the slight increase in power decrease the work load and in turn decrease fuel consumption for the SAME driving conditions?
I could buy a K&N filter cleaning kit and put the filter back in I guess?
MarkZX3

[g-reg]

My car is still basically stock so i guess im pushing 30ish