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Old 07-07-2008, 07:52 PM   #3 (permalink)
lunarhighway
Master EcoModder
 
Join Date: Feb 2008
Location: belgium
Posts: 663

vectra a - '95 Opel Vectra GLS
90 day: 37.51 mpg (US)
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the hatch is pretty much flush with the roofline although there is a very mild rubber stip over the window seem, but what surprised me, this strip sits in a a very shallow "valley" so that it doesn't projects beyond the overall roof/hath line. i don't know if this is purely aero motiveted, as the sedan version (wich my dad has) uses the same roof panel, but has a slightly steeper window, yet the fact part of this setup required the rear glass to bulge slightly at the top, gives me the impression this shape was intentional.

however i find it slightly strange the flow is detached at the first part of the roof, althoug the windshield/roof angle; is a little blunt. (this time i think practical reasons overruled perfect aero... people still tend to hit their shoulders on the top door sill getting in and out)

so perhaps vortex generators, or turbulator strips at the end of the windshield might prove beneficial
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