The phrase "rear roofline" refers to the design of the top part of a car's back end. It describes the slope or shape of the roof as it gets closer to the back of the vehicle. Full definition
This is sadly not the case for passengers attempting to contort themselves into the rear seats as the door opening and sharply sloping rear roofline makes for a frustrating experience all - round. (carbuzz.com)
Along with the choice of 16, 17 and 18 - inch wheels, the Hatchback's unique color palette and aerodynamic aids such as a standard rear roofline spoiler make it recognizable at a glance. (hondanews.com)
Back seat room is good, although the raked rear roofline makes rear ingress awkward and cuts into cargo space. (driving.ca)