3000K Xenon HID kits produce a deep golden light hue which is ideal for fog light applications. Yellow Xenon lights perform exceptionally well in adverse weather conditions, like rain, snow or fog. I personally use 3000K HID on my car as fog lights, they improve visibility quite a bit on top of my Xenon headlight s. 3000K Xenon car lights produce approximately 2900 lumens, about 3x when compared to traditional halogen bulbs.
Not sure what bulb your car is using? Try this Automotive Bulb Reference
site to get the proper bulb information for your car.