Nice build quality but less crisp cut off than original halogen bulbs
As one would expect from a Philip's product the build quality is good, the bulbs fit the fog lights nicely and the connectors are good quality.
However on my B Class Mercedes W245 you need the addition resistors to prevent the CAN bus detecting a bulb failure and turning the lamps off. More critically despite being brighter and whiter the horizontal cut off is less defined than the original halogen bulbs, although still below aim point, I am not sure if they actually reach less far from the car, will have to wait for fog to really judge.