# 2004 Ford Ranger fuel economy dropped overnight **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** ford, ranger\ **Created:** [April 16, 2021, 5:48pm UTC](https://community.cartalk.com/t/2004-ford-ranger-fuel-economy-dropped-overnight/176186 "2021-04-16T17:48:02Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![petercc1](https://avatars.discourse-cdn.com/v4/letter/p/779978/32.png) [@petercc1](https://community.cartalk.com/u/petercc1)\ **Post date:** [April 16, 2021, 5:48pm UTC](https://community.cartalk.com/t/2004-ford-ranger-fuel-economy-dropped-overnight/176186/1 "2021-04-16T17:48:02Z")
My 2004 Ford Ranger fuel economy went from 17 mpg to 11 mpg overnight ---
**Author:** ![weekend-warrior](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/weekend-warrior/32/26122_2.png) [@weekend-warrior](https://community.cartalk.com/u/weekend-warrior)\ **Post date:** [April 16, 2021, 7:52pm UTC](https://community.cartalk.com/t/2004-ford-ranger-fuel-economy-dropped-overnight/176186/2 "2021-04-16T19:52:02Z")
for that to happen overnight someone siphoned gas out of your tank. checking your mileage one day and then the next without using it in between thats the only thing i can think off. or you have a gas leak ---
**Author:** ![davepsinbox\_157004](https://avatars.discourse-cdn.com/v4/letter/d/73ab20/32.png) [@davepsinbox\_157004](https://community.cartalk.com/u/davepsinbox_157004)\ **Post date:** [April 17, 2021, 9:22pm UTC](https://community.cartalk.com/t/2004-ford-ranger-fuel-economy-dropped-overnight/176186/3 "2021-04-17T21:22:20Z")
Have your driving habits changed? Beyond that, you might have a stuck thermostat. ---
**Author:** ![petercc1](https://avatars.discourse-cdn.com/v4/letter/p/779978/32.png) [@petercc1](https://community.cartalk.com/u/petercc1)\ **Post date:** [April 18, 2021, 12:22pm UTC](https://community.cartalk.com/t/2004-ford-ranger-fuel-economy-dropped-overnight/176186/4 "2021-04-18T12:22:43Z")
Good point. Thanks.