Porsche 928S 1983 Driver Manual page 52

The shift points given here are theoretical road speeds. There may be certain variations in practice as a result of ma-
nufacturing tolerances, the temperatures of components and automatic transmission fluid as well as tyre slip.
In selector position "D" the automatic up
and down shifts are dependent on a combi-
nation of road speed and accelerator pedal
position. The shift points vary between the
part throttle and full throttle positions.
50
Up shifts
A) When you drive with a gentle pressure on
the accelerator pedal the transmission
shifts from 1 st to 2nd gear approx. 30 km/h
(20 mile/h) and into 3rd gear approx. 45
km/h (28 mile/h) in order to preserve fuel
and reduce noise levels.
B) During full throttle acceleration or kick-
down the transmission holds 1st and 2nd
gears longer for better acceleration. It then
shifts from 1st to 2nd at approx. 100 km/h
(60 mile/h) and into 3rd gear at approx. 160
km/h (100 mile/h).