Quote:
Originally Posted by Shaneajanderson
I was saying 'bad' relative the to the larger displacement engine in the heavier Silverado. I'm really curious as to why it is the way it is.
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Usually it comes down to the following
1. Aero
2. EPA MPG Crossover speed (this has the greatest effect on real world economy not “as tested” economy which at times is almost meaningless when comparing two vehicles with similar economy values)
3. Transmission efficiency and controls
4. DEF efficiency and controls, dirtier engines drive more regen.
It is very worthy to note this Silverado only scores 23mpg city and 33mpg highway.
The epa combined value for me is almost meaningless , the fact PHEVs rarely mentioned city and highway separate was a big red flag for me.
We shall see what the real world reports once these are on the road a few years, I doubt 40mpg at steady slower speeds will be commonplace but who knows?