I have a peugeot 307 1.4 petrol 52 plate. My antipollution light has been coming on and going off for the past two months. I read on a forum it could be to do with buying supermarket grade petrol.I have topped it up with some good premium petrol from BP and still the engine management light stays on when the antipollution light is on. The car when in normal driving whether it be at 30mph or 70mph the car starts to lose power. My acceleration just dies and then kicks back in after a few seconds. The antipollution light is off at the moment but i was out today on the motorway and it started to lose acceleration for a few seconds and then kicked back in. Can anyone shed any light on my situation. Thanks Graham