I'm Denis. I'm eco-driving since a few months. The first reason is to lower my eco-footprint, as I began to do it for electricity and water. The bonus is the money saving We wanted to buy a new car, but we chose to install a 3kWc solar panel system so the new car will have to wait... and the most important isn't the car you drive, it's the way you're driving it We have 2 old diesels (7 and 11 years). We were averaging 7l/100 (33mpg) for our daily commutes. By changing schedules and/or routes, we are now averaging less than 6l/100 (39mpg). I don't have instant feedback in my car (the older one). I'm trying to lower the speed and DWB as much as possible because the car has DFCO. I'm trying to change gear sooner at 2000rpm, but at the beginning the ICE wasn't happy to be at 1500rpm. I changed for high-grade diesel and after half a tank the ICE was happy to be at 1500rpm. Now after 1.5 tank, the ICE is happy to accelerate from 1200rpm. This will certainly permit me to have more improvement Have fun, Denis.