Efficient car for higher speed cruising

[93tracerwagon]

We're pulling down over 30 MPG at 70mph in a stock 2017 full size chevy van at about 7500lbs. Engine rpm is 1500 at 70 mph in eighth gear and has plenty of power.

[jcp123]

Originally Posted by 19bonestock88

EDIT: I just seen the latest version of the Duramax V8 is rated at 445hp and 910lb/ft (2800 and 1600 RPM respectively)... imagine mashing the throttle at highway speed, in 7th gear, and be met with that much torque!

Probably wouldn't be unlike my Freightliner sans trailer. Riding that torque once the turbo spools is wicked fun.

[windshadow]

A buddy of mine had a convertible corvette with an automatic MPG readout. He drove it like a maniac. I looked over at the readout while he was going about 80 and it was reading 35mpg. Go figure. with top down. Lighweight body, alloy wheels, efficient streamlining. I do not know if it had a belly pan.

Originally Posted by 19bonestock88

I wonder if a streamlined C7 Corvette would do well enough cruising at 100? It might look weird with smooth wheel covers and grille blocking but I could imagine maybe 25mpg

[Xist]

Those also tend to read a bit high, but 5% would be less than 2 MPG.

[slowmover]

Steering & braking are what matter. No one makes a vehicle to deal with such a wide variance in vehicle speeds amongst traffic. It’s just a dumb pursuit.

Especially as it ignores what is the basis of “need”? There isn’t any.

EM to cut costs? Fine. It’s only finesse of what already makes a good driver. But leave that out and it’s justification for a lie (“me, Me, ME!”).

Grow up.

.

[teoman]

Its more of a mental exercice at the moment. It is an interesting conversation topic. But if you do crazy miles at higher speeds like that one guy with the hybrid who was doing more than 500 miles a week in a hybrid on the motorway it could be interesting data.

Yesterday i drove a friends bmw 320d accross cities and the mpg was good even though i was going a bit fast. 5.9l/100km.

[guudasitgets]

My 911 got 33mpg with a 22 gal tank

[teoman]

At what speed?

With my 1200cc motorbike I can get 4.4L/100km @ 80 kph

Or 10L/100km @ 180kph.