Is it normal to have to fill the gas tank of a 2000 ford Taurus se every week?

Don't laugh. I'm ignorant about cars and this is my first one. I own a 2000 Taurus station wagon. I drive 6 miles to work and 6 miles back every day and don't drive many other places than that. I live in the city. I'm filling my tank every week and my boyfriend says that's way too much. He says I should replace the spark plugs. Would he be correct?

Write down the odometer reading when you fill the tank each time. There's usually a pushbutton to switch between several odometer readings - use one that gives you decimal tenths of a mile (usually in opposite colour - perhaps white on black).

On the next fill up, take the number of miles, divide by the number of gallons, and look your car up on the link below. A 2000 Taurus wagon should be getting about 17 city miles per gallon. 12 miles five days is 60 miles which should burn 3.5 gallons. This doesn't sound like a full tank, so he's probably right.

It's very hard to tell where a car is losing gas mileage. It could be plugs - a good mechanic can tell if it's the plug's fault from the colour of the porcelain part. It could be tires too soft. It could be many other things.

Well, you don't really give enough info to help but ill try… 12mi a day (i'm guessing 5 days a week) that's around 60mi to a tank of gas i'm not going to go look at the spects but i'm guessing its around a 15 gal tank now yes that's really bad but just plugs aren't going to fix that i'm sad to say:/ id be looking at your O2 senser, plugs really I can't say what all to look at I don't know enough about the car like how good it runs does it miss etc sorry

Figure out your MPG. What other driving do you do? Do you sit with the AC on when parked for long periods of time? Many things contribute to your miles per gallon.

Fill up the gas tank write down the mileage of the speedometer. Drive about a 100 miles stop and refill the gas tank. Write down the ending miles then subtract the two mileages say your car started out at 60,100 miles on the odometer when you started after you take your trip and gas up subtract that from the ending miles say now it is 60,220. That means you just drove 120 miles. Now you gas the car and see how many gallons of gas it used. Say it was 5 gals. 120 divided by 5 shows you got 24 miles per gallon. If it took say 8.5 gallons divide that into the 120 by the 8.5 gals. Would give you gas mileage of 14.11 miles per gallon. That is the way to find out how good or bad the mileage is. It always burns me when someone says i get 300 miles and have a half of a tank left by the gas gauge. That means nothing at all. Gad tanks are all different sizes and gas gauges are inaccurate. See what you get for mileage then you can go to a mechanic and tell him exactly what mileage you get.