Hello,
You are right, skoda octavia has real consumption information (fuel yield, or mpguino)) as all the vw-audi group cars.
After quite 10.000km using a grid block
http://ecomodder.com/forum/showthrea...ock-12257.html
My turbodiesel 1.9cm3 passed from 5,5 l/100km to 5,2 l/100km, with no heating problems in spanish hot summer.
Sorry, I can't help you with DGS AT transmission, mine is 5 gear manual.
Salut
CB