Quote:
Originally Posted by roflwaffle
The fuel efficiency of some rigs is crazy! 12mpg@50mph, for example. For comparison, the average car in the US gets ~16.something mpg, and weighs a couple tons... So, fifteen times the size but nearly the same mileage. Conspicuous doesn't do that difference justice. |
trucks are diesel.. thus the good MPG..
my big a$$ 1 ton dually long box crew cab diesel automatic pickup thats 16 years old, gets 20mpg.. 5mpg better than a new standard cab chevy short box 1/2 ton..
Also rigs are usually sticks .. that helps too.. however they have slower accelleration than my crx while hypermiling... while driving my crx i always get big SUVs on my butt when im doing 55 and they barrly by me and tailgate at starts and then floor it as the speed by me.. thats why there getting 16mpg.. people dont know how to drive for mpg.. truckers actually do for the most part.. they use gravity on hills and spped down and slow up the hills.. thats a very common trucking method.. they have 80,000 lbs of momentium built up there to use..
I really notice the lack of weight in my CRX effecting momentium vs my benz.. the Benz will coast in neutral far longer than the crx.. thats because its more than 2 times the weight traveling at speed.. takes 2 times more energy to slow it too.. Imagine if you car was 80,000lbs.. whatcould you coast up with that much weight behind you..
And finally.. trucks typically are all highway miles.. very very low percentage of city driving.. they easly bring there average up to hiway ratings when they do 1 million miles and only 50 k of that is in city stop and go. Not to mention thatmost trucks are always at opperating temp.. very seldom is the truck shut down and driven less than 30 miles then shut off.. helps increase the amout of time the vehical is at prime opperating conditions..
Just like if you hopped in your car and drove a entire tank of gas of in one sitting on the highway.. yous get some good numbers.