SEAT Leon - Power loss - lodgey
Hi everyone must be honest I love the forums on here they very helpful. Just to say I had problem with power loss on my seat leon. I was told it was the egr . But I've now worked it out for myself. I had read in manual that I should use super unleaded petrol for better performance. So that's what I was using. The car seemed to get worse. It was only when I pulled into a garage cos realised need petrol and they never had any super so thought ordinary unleaded would do this once. An straight away there was no power loss my car flew like it did wen I first had it. So I hope this post helps you out there
SEAT Leon - Power loss - Avant

Moved to Technical - where someone may come up with an explanation.

SEAT Leon - Power loss - balleballe

Which engine has your car got?