"High beltline" refers to the position or height at which the waistline of a vehicle is situated. It describes the line where the bottom edge of the side windows meets the body of the car. Full definition
The long hood with pronounced lines and powerdomes, the low greenhouse with high beltline, the accentuated wheel arches as well as the large wheels (18 - to 20 - inch) and the broad visual effect created by the rear reinforce the S - Class Coupe's aspirations as a masterpiece of automotive refinement. (speedsportlife.com)
Jeep Patriot's high beltline completes the vehicle's protective side profile. (speedsportlife.com)
The relatively low seating position and high beltline create a liability off - road, but only because it's difficult to see what's nearby outside. (autoweek.com)