Traditional incandescent bulbs typically produce about 13.5 lumens per watt, while LED bulbs produce 75 to 100 lumens of light per watt of power. LED bulbs use only ~0.01 kilowatts per hour (kWh).

If your car came from the factory with halogen or HID bulbs, you’re going to need to ... a 50,000 hour lifespan are still fan-cooled, but 5.7 years is a long time to expect a fan to run.