Hi, I have the standard cruise control, not the adaptive cruise control and don't use it much but today I tried it out and noticed the following. Was travelling down the motorway with cc off. Then came to some roadworks and a 50 speed limit, traffic was not too bad so I set the cc to 50 (sorry for holding everyone up). After a while I could feel the car pulse faster and slower although the speed on the speedo seemed to stay the same. I put it in sport mode to see what the rev counter was doing and it was steady at 1500 rpm. I noticed the power meter was raising slightly and then dipping so had a look at the battery, engine, motor graphic. I noticed that when the car felt slower it was charging the battery and when faster, the engine and motor were on. The battery was full (most bars). It seemed that the car kept topping up the battery and then discharging the battery to assist the engine, but only for a few seconds at a time. It was a bit disconcerting and not a smooth drive. If I hadn't come to my junction and turned the cc off, I would have anyway, as the ride was not smooth. Has anyone else noticed this strange behaviour?