Google Search:: "Hmmm
I thought the engines were designed for different fuel injection systems.
Digifant II for the 88 Golf engine (higher compression) and CIS-x for the
Scirocco. Not sure if that Scirocco engine had the knock sensor on it.
That might make a difference in efficiency!
Of course more factors can come into play such as the type of gas,
transmission ratios, tires and air pressure, dragging brakes, wheel
alignment, engine in good tune, properly working sensors (CTS & 02), and
even waxing the body of the vehicle!!!
Did someone mention driving habits also? lol
Some of the 88 Golfs should get closer to 30 mpg.
later,
dave"