Originally Posted by Wry 'Cuda
Are the 27, 27, 28, 30 readings the overall average or do you reset every so often? If it's the overall average, your recent consumption is probably better than 30.
Our KIA improved its fuel consumption by a couple of MPG over the first 2000 km.
Do not rely on the dash 'AVG MPG' - this is a hit / miss at best and the science behind how Kia calculates average is iffy... If you suspect the computer is out to lunch, reset it but pressing and holding the button while avg/mpg is displayed.
Better yet, if you want accurate readings use fuelly.com every time you fillrup.