The design of the 928 included a number of innovations. Including the weissach axle that provides passive rear wheel steering in certain off throttle cornering situations. An un-sleeved, silicon alloy engine block was another. Reducing weight and providing a highly durable cylinder bore.
Approximately 95 percent of 928s were delivered with automatic transmission, only 5 percent were manual. This may have been ue to the demographic of 928 buyers (mostly financially successful middle age or older men).
Despite appearances the 928 is capable of carrying a substantial load in its luggage space, especially with the (infrequently used) rear seats folded down. This made it far more practical for daily use or long trips than the 911.
The rear seats provided a little more space than the 911, but were still only really practical for small children for extended trips.
The design started in 1971, and sales started in 1977. The design goals was to make a luxury sports coupé for the US market, and replace the aging 911. However the 911 proved more popular in the long run. The 928 was discontinued in 1995, the 911 lives on.
It was elected Car of the Year in 1978.