maybe my math is wrong.. posted numbers on this car are 6.3L/100km highway and 8.4L/100km city. Since I'm driving mostly highway I figure 60% higher consumption like this.6.3L/100 x .60 = 3.78L/100km , so 6.3L/100km + 3.78L/100 = 10L/100km. This is what I"m averaging. I use cruise and don't pla...