Danny, by your own figures that is a 20% advantage to the diesel!
20% sounds like a lot, 1.2l/100km doesn't; still, that's $17 per 1000km.
I had a gen V Golf 1.9TDI which I traded after 2.5 years for an EOS TDI.
I reckon that I got about 850km per tank (6.5l/100km).
So for with the EOS, and it has only been 11 weeks, or 3 tanks, my guess is about 800km per tank (6.9l/100km).
With both cars, I was/am using about 1l/100km more than VWs' stated economy, which is a combined city/country figure.
Considering that most of my driving is city based, I am not unhappy with what I am getting.
Bryan, the EOS TDI is $2,000 cheaper than the TFSI, so we are already in front, the better economy is a big bonus!
Some may argue that the TFSI is more "fun" to dive, but I rather like diesels and the way they deliver power, even with the turbo lag at low revs.
PS, I too have a Landcruiser TDI (100 series that I traded in a 12yo 80 series TD for in 2003) which cost $12,500 more than the petrol V8.
At the time, I calculated that the pay-back on the diesel because of the better economy was about 22 years.
Any comments on the 200 series V8 TDI released last month?