My_Looong_Horn
Junior Member
- Joined
- Feb 20, 2022
- Posts
- 13
- Reaction score
- 18
- Location
- Ontario, Canada
- Ram Year
- 2022
- Engine
- Hemi 5.7 eTorque
Agreed, but the real savings in fuel are only when stopped and the engine isn’t running and during the first second or two of acceleration. E-torque has 130 ft-lbs (?) of torque as soon as you step on the accelerator all from the mild hybrid and it launches the truck from standstill. I saw a graphic the other day on it that the 5.7 no e-torque doesn’t make that until 800-900 rpm. This is essentially an electric launch assist for a big vehicle.As I posted on another message in this thread, my Dad has a 17 RAM 5.7 HEMI (quad cab, 4x4) and while not sure what he gets if he sits down and calculates real world data (gas slips and actual mileage), the truck system on his shows him getting 18+ mileage, a lot, with no e-torque, no messing with the MDS (that I am aware of) or any other "funny business" (pretty sure he couldn't be bothered). So claiming that the mileage is better or not, unless you have 1 person driving 2 almost identical trucks, with everything else being exactly (or as close as you can get) the same, same age, same mileage, usage, weight of the vehicle, etc. then the claims of "better mileage with the e-torque" are just that, claims.
As far as your mostly highway miles, modern 100% fuel powered vehicles get better mileage on the highway already. That is why the EPA numbers are higher for that than city driving. Would it decrease use of the fuel available in the tank? Possibly, if the engine is shutting off, as was posted elsewhere, it doesn't use fuel then.
But if you are getting roughly the same MPG mileage as a vehicle without it, which seems possible as well, then I would point out that you are effectively getting worse real world mileage because it is a less effective use of the fuel you ARE using to go the same distance. Again, without having 1 person driving the otherwise same vehicles in the same conditions, then all this is just theories.
Factory claims are, like the EPA estimates, found using controlled conditions that are repeatable there because they are controlled. Real life, not so controlled.
I believe that’s where your fuel savings are. Ram tells you that after that point the fuel savings are minuscule and due to the assistance it gives the transmission while shifting. And those savings aren’t actually a feature. The feature is it helps the transmission during shifts to reduce wear & tear and to produce a smoother shift. The smoother shift is obvious.