Fat chance motability taking any kind of stance against any manufacturer as it could pose legal problems, they will go along with the rest of the sheep.
The VAG group car I have recons on an average mpg of 52ish, I’ve averaged 32 mpg over 38,000 miles and motability suggest it must be my driving even though over 85% of the distance has been at 70mph on cruise control, ie they don’t care.