2 of 3 people found the following review helpful
Made a huge difference,
This review is from: OSRAM NIGHT BREAKER UNLIMITED H4, halogen-headlamp bulb, 64193NBU-HCB, 12V, duo box (Pack of 2) (Automotive)
Bought these to replace the standard bulbs in my girlfriends Mazda 2. Hard to say whether the stock bulbs were truly awful or whether these osrams are truly much better than a standard bulb but the difference was amazing. Light in front of car is much brighter and less yellow. The bulbs also now cast more light on road signs and really light up them up much more than before. Very good price too.