I drive a 2015 automatic Micra. I just drove 400 KMS today....98% highway driving from near Vancouver to Osoyoos BC. I reset my mileage calculator and it is telling me that I averaged using 5.4 litres for 100 kms. I have never seen that even for a manual transmission....so is it possible? Unfortunately I did not start out with a full tank so I can't calculate it that way. It does seem that I did that distance on about half a tank of gas.... Amazing!