Yes, the change (+ or -) is from the same brand 2015 ratings which is what's in the brackets for each brand name manufactured vehicle. Some have gotten better to much better (higher) and some have gotten worse to much worse (lower) in vehicle quality.
Higher in quality generally always gives on average less to much less overall repair costs during the vehicle's life and also retains a higher to much higher resale/trade in value (less $$$/% of depreciation). Over 50 years of compiled data have shown this to be true. Not only true in/of vehicles but also RV's, boats, homes, motorcycles, etc.
Glitz and glamour may appeal to the eye but they do NOT alter anything that was used in an item's/product's construction or the method/factors used in which the product was actually built/made as all those are past tense factors. It is what it is and no hype, advertisement, or false claims will change it! It's the finished and sold product now!
Simple example: Few RV'ers that don't realize the difference between the quality, life, and long retained resale value of perhaps a 30' Airstream trailer vs an RV industry average 30' production travel trailer. Glitz is just window dressing and Airstream doesn't hardly even move the needle on "glitz" but will on average be still in fine structure condition long after the average TT has been junked or rotted or fell apart! Nope! I do not own nor have ever owned an Airstream trailer. The marketplace makes the determination as to quality and values! Buy less/lower quality, get less/lower quality and all that goes with it too! Same with vehicles etc. As is the norm, so many people "can't see the forest through the trees"!
A superb CC LB 4X4, GM HD Diesel, airbags, Rancho's, lots more
Lance Legend TC 11' 4", loaded including 3400 PP generator and my deluxe 2' X 7' rear porch
29 ft Carriage Carri-lite 5'er - a specially built gem
A like new '07 Sunline Solaris 26' TT
