Know there have been previous post concerning diesel fuel consumption, but thought I would start another with a Poll in it to discover what people are using, regular or ultra? Would also be interested in what mode cars are being driven in ie. Auto, comfort, individual etc and what mpg they are actually achieving in either their 1.6 or 2.0 litre cars. Have they noticed any difference as their engines bed in? We all experience improvement with the warmer weather.