I bought an '07 Camry with a 4 banger 2 weeks ago. IMO, the gas mileage sucks! Had I known, I would have bought a V6! I also have a '06 Camry with a V6 and it gets better mileage! I struggled with purchasing an I4 and only convinced myself to do so because it did have enough power and I figured the fuel savings would be good.
First off, if you have an XLE and you're going by the dash readout, be aware that I and others find them to be reading about 10% high. My readout said 22 MPG, actual was 20 MPG. The best that I have seen so far was 28.2 on a 250 mile all highway trip, you know, the kind of trip they claim 32 MPG for. That 28.2 was acccording to the dash readout, it was probably more like 25 MPG.
I have a new air cleaner, my tires are correct, I have 93K, and irridium plugs that claim to be good until 120K. I bought this car for work on a company budget, I foolishly used the factory claimed mileage of 23-32 in my calculations, I'll probably end up losing money because of it. My Tacoma meets claimed mileage even at 160K, I assumed this car would do the same.
Don't get me wrong, it's a great car, just hugely dissapointed in the mileage.