Poor gas mileage

[robertsondan]

I have a 2004 Avalon XLS with 16,500 miles. I have yet to crack 20 MPG even on long trips. I'm no ricky-racer. Tire pressure is up to snuff, idles smooth & drives like a dream. I'm no longer getting the quick engine start-up. Typically takes 2 seconds or so for the engine to fire up whereas when new, it jumped to life almost instantly.

Any suggestions?

[Joe W]

You should be able to do better than that for mileage! Is the car still under warrenty? The dealer should look into this.

[csaxon]

How's the air filter look?