With a manual gearbox, fuel consumption is up to 54.3mpg Combined.
Six-speed manual gearboxes were now standard for the entire range, except the C 320.
It was also the only car to have a manual gearbox in the 1995 F1 season.
In 1990 the S4 was no longer available with a manual gearbox.
This was the final year a manual gearbox could be ordered with the L-82 engine.
In '79, less than 20% of the cars were delivered with manual gearboxes.
The manual gearbox remains a 5-speed despite the European versions being upgraded to 6-speed.
This was innovative at the time as performance cars mainly had manual gearboxes.
The design team set out to create a 6 speed automatic that fits in the same space as a manual gearbox.
A further 110 (with manual gearboxes) were ordered for delivery between 1975 and 1980.