Nothing is wrong with my car...Oil changes are up to date, I have a drop-in K&N Air Filter...Getting new spark plugs in the near future. The PT Cruiser is about as aerodynamic as a brick. Check any PT forum you can find any they talk about the mileage and how it's no good etc..
I just filled up my car, and by using some of the techniques listed on the website I hope to see an improvement.
What really makes me wonder though, is I can easily hit 25 MPG driving The Big White Hooptie on the highway (Cruise on 65 and A/C). Its a 1981 Buick with a 231 V-6 and a computer controlled 2bbl carb that hasn't worked right in 6 or 7 years. Its as aerodynamic as a brick as well, is heavier, bigger, and as I said earlier the carb hasn't worked right in years.
I don't have a doubt in my mind that they don't own one. Its ridiculous but I won't complain too much as it's my first car and I love it. People have gotten 30MPG or better with the car, it's the way you drive it I guess....
Today will be my first real day of using techniques to save fuel...We'll find out in a few days what kind of improvement the PT can offer on Fuel Economy.
Just to add my $.02, I used to own an '02 PT Cruiser, and I absolutely loved everything about that car except the mileage. It was fun to drive, could hold a boat-load of stuff, (the front, at least) was roomy and comfortable, and it was very easy to put car seats in and out of as well.
But, I was lucky to crack 19MPG, usually got 18ish. My record was 21.
I traded it in on 2002 Volkswagen Jetta TDI (and got 37-40 on diesel).
The PT (New Beetle, Prowler, Thunderbird, Mini) weren't intended to have maximized aerodynamic properties. Get over it. These were styling exercises that put primary emphasis on the exterior appealing to the expected tastes of the intended purchasers.
Trade the PT in for a Neon (Golf, LH sedan, LS, or what ever it was that prompted the mini).