I,VE done led,s on my leon cupra mk2 …..it is really impressive ...one thing to remember is to get a legal power output on bulb too bright and the fuzz as well as mot failure for wrong bulb.....I got a set of Osram and had to get 2 canbus relays to put between bulb and connector...this also stops fault light on dash.....you can get canbus ready bulbs but don,t always work..... and for that little extra at least you know it,ll work...and just tuck away behind light...