Just filled up my fifth tank full, and so far I have been very impressed the mileage I am getting from the new Ram. I didn't expect to go up over 100hp from my Sierra, and get BETTER mileage. Here is what I have averaged so far, vs my last dozen or so tanks in the Sierra.

 

is it me or is your cost/100km way off? 10.15l/100km at $0.97l is $9.85 not $15.83.

 

damn....do you drive downhill both ways?

 

Maybe, I will look into the equation again.

Nope, I am right, if you take the cost per 100kms ($15.83) and multiply it by 4.2 (the total kms / 100) it will give you the total cost of the tank $66.42. Which it should.

 

What rear end, speed, city/highway ratio?
I get about 13 in town and 18-19 on the highway
3:92 rear.

 

your calculations are way off. for example:
IN 420km you burned 68.62 liters
420km = 261 miles
68.62 liters = 15.1gal(imp) or 18.1gal(us)
261/15.1 = 17.3mpg(imp) not 27.85mpg
261/18.1 = 14.4mpg(US) not 23.17mpg
BIG difference!

 

You are correct on this one, I found and fixed the problem in my calculator.

It was in my l/100kms cell, which is used to populate the mpg cells, so it has always been screwed up, haha.

Oh well, it is still relevant to the old truck, which I am happy with. Just not as happy

 

on my 09 crew cab 4x4 with the hemi. I got 24mpg(imp) on the highway, and the worst was 18mpg(imp) city. this is with a VERY light foot!

 

Ya, my "corrected" numbers have me around 15-16mpg (US).

That makes much more sense, for a 60:40, highway:town driving ratio.

Like I said in the first post, the most important thing to me is that the new truck is as good, or better then the old one.

 

I see any where from 15-20mpg US. i think it's quite good for the size of the truck and the hp it has. I'm impressed to say the least.