# 2005 Chevrolet Avalanche - MPG **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** chevrolet\ **Created:** [November 21, 2019, 9:15pm UTC](https://community.cartalk.com/t/2005-chevrolet-avalanche-mpg/153289 "2019-11-21T21:15:32Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![DonChernicky](https://avatars.discourse-cdn.com/v4/letter/d/db5fbb/32.png) [@DonChernicky](https://community.cartalk.com/u/DonChernicky)\ **Post date:** [November 21, 2019, 9:15pm UTC](https://community.cartalk.com/t/2005-chevrolet-avalanche-mpg/153289/1 "2019-11-21T21:15:33Z")
My Q is about what Tom said in Car Talk 04/04/2014 “They (Bridgestone) found that for every mph you increase over 55, you lose an avg. of 1.6 mpg.” Really? So, at 75 mph - 20 mph faster - you lose 20×1.6 = 32 mpg? ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [November 21, 2019, 9:55pm UTC](https://community.cartalk.com/t/2005-chevrolet-avalanche-mpg/153289/2 "2019-11-21T21:55:38Z")
Mpg loss from speed is not linear. 1.6 mpg for every 1 mph is an incorrect generalization. Tom is deceased, Ray doesn’t post here, and the show has been in reruns for a decade. My Avalanche loses about 2 mpg per 10 miles and hour. My Mustang loses about 0.75 per 10 mph. Losses depend on frontal area, coefficient of drag and speed squared. ---
**Author:** ![GorehamJ](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/gorehamj/32/24103_2.png) [@GorehamJ](https://community.cartalk.com/u/GorehamJ)\ **Post date:** [November 22, 2019, 12:16am UTC](https://community.cartalk.com/t/2005-chevrolet-avalanche-mpg/153289/3 "2019-11-22T00:16:04Z")
Those old calculations about MPG loss vs increasing speed were awesome until cars starting coming with real time MPG meters and folks realized that at a steady 75 MPH they were crazy efficient. ---
**Author:** ![oldtimer-11](https://avatars.discourse-cdn.com/v4/letter/o/e79b87/32.png) [@oldtimer-11](https://community.cartalk.com/u/oldtimer-11)\ **Post date:** [November 22, 2019, 3:03am UTC](https://community.cartalk.com/t/2005-chevrolet-avalanche-mpg/153289/4 "2019-11-22T03:03:05Z")
My 2012 Camry with an EPA rating of 35 MPG and less efficient but better riding and handling tires with double the treadlife still gets 33 MPG on real world trips at cruise control max speeds of 75 mph. this is a 730 mile trip with 2 border crossings and about 175 miles of two lane roads through towns. The mileage is calculated by odometer miles and gallons to fill. ---
**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:** [November 22, 2019, 4:00am UTC](https://community.cartalk.com/t/2005-chevrolet-avalanche-mpg/153289/5 "2019-11-22T04:00:02Z")
My Corolla loses 7 or 8% of its mpg going from 60 to 70mph. I’d assume something similar for other vehicles. As others have said, it’s not necessarily linear. ---
**Author:** ![George\_San\_Jose1](https://avatars.discourse-cdn.com/v4/letter/g/e5b9ba/32.png) [@George\_San\_Jose1](https://community.cartalk.com/u/George_San_Jose1)\ **Post date:** [November 22, 2019, 4:25am UTC](https://community.cartalk.com/t/2005-chevrolet-avalanche-mpg/153289/6 "2019-11-22T04:25:43Z")
> [@DonChernicky](#): > > for every mph you increase over 55, you lose an avg. of 1.6 mpg That seems quite a bit more than I’d expect for mpg loss vs speed. Maybe there was a typo or somebody mis-spoke. I’d expect something more like this 55 mph 35 mpg 65 mph 32 mpg 75 mph 27 mpg ---
**Author:** ![Cavell](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cavell/32/43396_2.png) [@Cavell](https://community.cartalk.com/u/Cavell)\ **Post date:** [November 22, 2019, 12:25pm UTC](https://community.cartalk.com/t/2005-chevrolet-avalanche-mpg/153289/7 "2019-11-22T12:25:54Z")
What is your mileage now with your 2005 avalanche at 55mph? ---
**Author:** ![It\_s-Me](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/it_s-me/32/12660_2.png) [@It\_s-Me](https://community.cartalk.com/u/It_s-Me)\ **Post date:** [November 22, 2019, 2:04pm UTC](https://community.cartalk.com/t/2005-chevrolet-avalanche-mpg/153289/8 "2019-11-22T14:04:04Z")
> [@DonChernicky](#): > > “They (Bridgestone) found that for every mph you increase over 55, you lose an avg. of 1.6 mpg.” maybe 1.6% ---
**Author:** ![ledhed75](https://avatars.discourse-cdn.com/v4/letter/l/f6c823/32.png) [@ledhed75](https://community.cartalk.com/u/ledhed75)\ **Post date:** [November 22, 2019, 4:58pm UTC](https://community.cartalk.com/t/2005-chevrolet-avalanche-mpg/153289/9 "2019-11-22T16:58:21Z")
I have a 2009 Challenger with the 5.7L V8. When I’m on a road trip with it, the car gets around 24 MPG if I keep the speed at 70 MPH. If I do 80 MPH, the fuel economy drops to maybe 22-23. It it enough to worry about? No. Now if the fuel economy dropped to below 20 all of a sudden, that would get my attention. But aside from that, I have other things to worry about. Just my 2 cents. ---
**Author:** ![CapitalTruck](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/capitaltruck/32/16592_2.png) [@CapitalTruck](https://community.cartalk.com/u/CapitalTruck)\ **Post date:** [November 23, 2019, 3:09pm UTC](https://community.cartalk.com/t/2005-chevrolet-avalanche-mpg/153289/10 "2019-11-23T15:09:59Z")
It’s incredible how steep the mileage loss is on pickups/SUVs. That wind resistance is a bear… ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [November 23, 2019, 8:54pm UTC](https://community.cartalk.com/t/2005-chevrolet-avalanche-mpg/153289/11 "2019-11-23T20:54:11Z")
A hungry bear!