Nothing amazing but they are better than the incandescent bulbs, the like is white, which you'd expect from LEDs and they are brighter, which makes it a bit better for reversing at night. Well, I've had 1 fitted for about a week and when parking at night I can see the difference between the two different bulbs. I bought them from T8ups. I got no errors but I'm not sure if the bulb warning system works on reversion lights. any here, here's some pics. I used the same camera settings on each image to make the comparison easier. Old New Combined. All new.