Hey, I've a 2006 with 21k miles and am trying to get to 20mpg....or better! My tanks so far have averaged: 19.8, 18, 17, and 18.75. The last 2 tanks were with premium. The 17mpg was prbly due to my dropping the psi to 30 to soften the ride. Do you think your air deflector helps with your MPG? I'm sure the Toyota place I bought it from probly used conventional oil....so that may be hurting my MPG too. Also any ideas on what to replace the Michelins OEM's M/S tires with? I prefer a softer ride over long mileage. Thanks!