I have just filled my C3 1.4 (54 plate) with unleaded petrol at my local Sainsburys. After driving about 20 miles the engine started to chug, the exhaust started popping and the car lost all power, by the time I was on my drive it just cut out altogether. My boyfriend has a bit of mechanical knowledge and says he thinks it's the fuel causing the cylinders to misfire and causing a problem. I was just wondering whether anyone else has had this problem and knows whether the fuel will have caused it. I can't get it fixed as my 'roadside' policy doesn't cover my house so I'm just trying to self diagnose before calling Citroen about it. Cheers