Well, Renault have gone down in my estimation as bit. I figured that the (Dacia) Duster should be doing more MPG than it was so I moaned at them a bit. To be fair Renault Maidstone took the car in and checked the "clip" - i.e. they plugged in the ODB tester and found "nothing wrong". A Brownie Point to them for trying. So, I opened a case with Renault UK to see what they could do. A bloke rang me up to discuss how I should drive a Diesel. "Don't rev it more than 2,000. Don't put anything in the boot. Don't have any people in it. Throw away the spare tyre...". I lied about the tyre, but you get the idea. "Listen, my Dad taught me how to drive slow - he was very good at it too. But I'll try what you ask." I managed to get another 3 mpg out of it. It's a thin line between changing gear and having the engine flame out due to no revs. He rang me back. Another Brownie point. "Nope, still a load of old bollocks....