As I've mentioned in my previous post, I've been driving a Kia Cee'd 1.6 LS diesel recently (got it as a courtesy car) and I've absolutely loved it. One question though, although I've seen stated in several places that the combined mpg for a 1.6 diesel Cee'd should be 60mpg, I've only been getting around 45-48mpg on average - even though my daily run is mostly on a motorway, which I would have thought would provide better mpg. Is there a good or bad way of driving a diesel where fuel economy is concerned? Is it the case that maybe hitting the higher ranges of the rev counter has an adverse affect on mpg? Any thoughts?