Left the dealer with my new 07' Double Cab 4x4 Lmtd 5.7 with 62 miles on her. 2 miles out, the check engine light comes on...2 O2 sensors and 1computer later, it's still on! The Toyota Master tech comes on Mon. Other than that drama, 603 miles and still love it!
Obviously, it's the unlocked gas caps that are the culprit. They are allowing the general public to siphon off a few gallons per tank - leaving the owner with only poor gas mileage as evidence. Very sneaky.