Gas Mileage Problem

Are there any owners of a 2000 Focus with the SOHC Engine that has experienced gas mileage that doesn't come close to the original. I believe the original MPG was 25 city 33 highway. (Correct me if I am wrong).
Mine is only getting about 20 to 22 average. I've had the fuel pump changed under recall, changed the fuel filter, changed the plugs and wires 3 times in the last year, changed the O2 sensor twice in the past year, installed a ford replacement ignition coil and throttle body position sensor, installed a K & N Air Filter, and still no change in the mileage.
Anyone else having mileage problems or have any suggestions.
Thanks
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If the thermostat is stuck open the engine will be running cold and the mixture will be way too rich. Do you have good heat out of the heater?
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That's about right for combined city/some highway driving. These cars are no screaming gas misers, especially around town in stop start traffic.
It depends on how you are determining MPG.
Factors effecting fuel efficiency are: how much weight the car is carrying, weather, altitude, how the car is driven,(driving 65 mph instead 50 mph uses 35% more fuel), tire pressures, kind of tires etc. It was just proven that the gas claims on the EPA stickers placed on new cars are a bunch of hogwash and they do not get close in the real world.. It looks that you have spent a lot of money to replace perfectly OK parts. Want to save gas? drive slower.
Are there any owners of a 2000 Focus with the SOHC Engine that has experienced gas mileage that doesn't come close to the original. I believe the original MPG was 25 city 33 highway. (Correct me if I am wrong). Mine is only getting about 20 to 22 average. I've had the fuel pump changed under recall, changed the fuel filter, changed the plugs and wires 3 times in the last year, changed the O2 sensor twice in the past year, installed a ford replacement ignition coil and throttle body position sensor, installed a K & N Air Filter, and still no change in the mileage.
Anyone else having mileage problems or have any suggestions.
Thanks
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Actually, 20mpg U.S. is definitely below expectations for combined city/country driving. One would have to be doing mainly city driving and have a heavy foot.
My 2000 SPI wagon has gotten close to the gov't specs since new and still does (except in winter, of course). I drive gently and keep it well maintained.
However, throwing parts at a problem is obviously a waste of money.
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I'd have to say you have something going on somewhere. I have an 04 ZX3 with the 2.3L PZEV engine and im getting about 27 combined, mid 30's highway, your smaller engine should give better results. Some things to look at:
Have you tried some fuel injector cleaner ? If not, try 2 bottles together now, than 1 more with the next 2 or 3 refills. Are the tires inflated properly ? Are your brakes dragging ? This is a common cause of poor milage. Do some self evaluation...are you a lead foot driver ? Try to purposely drive smoothly without sudden stomps on the gas pedal or brakes. Try driving no more that 10mph over the speed limit to keep engine rpm's lower.

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For my 2002 SE, I can get the city and highway mileage on the sticker. I have a 5 speed manual transmission.
For city driving I get around 27 to 29 MPG. For highway driving, on nice flat California interstates, such as I-5, I set my cruise control to 70 MPH and I get 36 MPG. If I stay with traffic, varies between 70 MPH and 85 MPH, my MPG drops down to about 31 MPG.
Now if I slowed down to 55 MPH, I would likely get around 40 MPG, which I think I got close too once. However, driving that speed on I-5 would put my life and vehicle at risk ;)
Cruise control is what I find helps me MPG most. I also do the following:
* always have a clean air filter - I change it every 10,000 miles
* always check my tire pressure and keep it at the pressures indicated on the sticker on the driver side door jam
* changed my plugs, wires, and O2 sensor at 60,000 miles
* change my oil every 3000 miles
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