The 1975-1980 Buick Skyhawk was a corporate twin to the Chevrolet Monza (which also included the Oldsmobile Starfire and Pontiac Sunbird). Unlike the Monza and Sunbird, the Skyhawk was available only as a 3-door hatchback. The Skyhawk is of particular note among the GM H-bodies in that while the others all offered 4, 6 and 8 cylinder engines, the Skyhawk was available only with the 110 hp 3.8L (231) 2bbl V6 engine. The Skyhawk would be discontinued after 1980 and replaced by a new J-car design in 1982.
See the Chevrolet Monza entry for further comments about the 1975-1980 Buick Skyhawk.