high mpg

if you know that 50% of a car's energy is used pushing it through the air then why are you driving a big square box?

s/b 55mpg

the 2021 Biden executive order 13990 raised fuel efficiency standards for passenger cars and light trucks (including the SUV). Automakers must meet 55 mpg by 2026.

ULEV ultra low emission vehicle

42mpg, the Honda Fit, a typical internal combustion engine from Japan, (see picture of the dashboard at night at 60 mph).

high mpg — 42mpg my dashboard display taken with macro setting

aerodynamic - designed to slice through the wind rather than push ackwardly against it
lightweight - curb weight Honda Fit is 2600 lbs vs. Range Rover 5400 lbs
engine tuning - add a good air filter to let the engine breathe
cruise control - keep it at 65-70 mph on the highway, and never, ever brake

a typical SUV weighs 2X as much as a Honda Fit.