I put a set on my VW Alltrack and with the mileage records I keep, I can say that I am getting about 1.2 mpg more than on the old tires which is about 3.3% improvement. They handle well, do quite well on wet roads and are about average in snow. Mine currently have about 12,500 miles on them and judging from the wear, I would expect to get about another 25-30,000 out f them.
Boomer & Joe1, do you remember what the previous set of tires was (prior to putting on the Ecopias)? I'm wondering what the comparison would be. I have Continental TrueContact tires which are evidently a line that is made for getting good MPG so I don't know if I would see an increase with the Ecopias.