When I try and pick up speed the yellow auto symbol/light on the rev counter panel suddenly comes on, it is quite frequent, the vehicle starts to lose power and I need to usually put my foot down and use twice as much petrol to pick up half the speed. The engine also becomes noisier. If I turn the engine off and restart car it resolves itself.
its a 2002 automatic Renault megane expression.

Ruby, March 2008

Obviously the light tells you that all is not well with your transmission.....with Renaults its usually an oil pressure problem. At least diagnostic tests for these are good so book an appointment with Renault who will let you know what the score is. Just make sure you are sitting down.....said he who had a Clio with similar problems.

John, March 2008