300KW and everything under the bonnet oversized pistons, 400Km per tank (If im lucky). It's been off the road for about a year though so im still not into the light foot stage...
I wouldn't use a 26 as a daily just because they are old. and they are cursed. I suppose the biggest difference you will see is from the turbos? if you have a turbo thats boosting in at like 2k (mine does) there isn't alot you can do about fuel.