Looking at either vehicle inside or outside there is 0 difference. Interior space is exactly the same.   I can’t speak to under the hood. I haven’t popped both beside each other to look, but I wouldn’t care anyway. You give up nothing on this model.   Normal daily driving the mileage is better, that I can tell you. drive hard, tow, or higher than 100k highway speeds, you aren’t saving anything.

I currently have a 2500HD Silverado with the 6.0L gas engine. It’s been flawless and is a very reliable and proven engine. It has 125,000kms on it and still runs like a top.   Im considering upgrading to a new truck but the not the 6.6L gas is offered now. I’ve heard of faulty plugs and some of them needing to add oil constantly due to bad rings and seals.    just wondering if anyone has one, what your experience is, or if anyone knows that maybe these issues have been resolved for MY25?   

I wonder if they designed the vehicle based on hybrid model so non hybrid model has more spare space under the hood, body, etc…so people did not see the gain in possible space with non hybrid models….or the battery and electric motor really take up very little space.  I think the batteries are wider and flatter so more easily hidden.   regardless, good to hear you are happy with yours.  Do you ever compare with your neighbors the differences in fuel savings?

0, you'd never know the difference between mine and a non hybrid - they're identical on the inside and outside My neighbor has the exact same vehicle - non hybrid model - can't tell

What space is lost in the vehicle with both a battery, gasoline engine and I assume electric motor that must attach to the vehicle drive train?