Yep, I’ve moved from a c5 1.9tdi to a c6 2.0 tdi for a daily smoker, great mpg although I’m not as economical as you yet, I bought my car needing a bit of love so it’ll come in time.
I used my c5 s6 for the work commute for a few weeks and was spending £90 in fuel in a week, where as my dailies go almost a month without fuel, I’ve never had it so good, admittedly that v8 means you leave the stereo off and open the windows in all weathers and that doesn’t help fuel consumption.