I have no problems with the fogs or the rear fogs.
I only use mine if it rains hard and I am drivign on the freeway where all that rain and water makes visibility low.
The last time it rained here in LA, was a few weeks ago, and I had to driveon the freeway when it was raining alot.
The water spraying off the tires and the rain coming down, and the overcast sky, amde visibility bad, the fogs and rear fog light was on at that time.
When driving normally I don't use the fog lights.
Now if I had some nice driving lights int he bumper, and they provided more visibility at night I would use those, but fogz when visibility is clear is just not what I do.
'92 300CE - Sold
2004 C240 - C7 Wheels
2015 ML350 - P1, Pano, Ash poplar wood, Sport Dinamica interior, Running Boards Keyless go.