They are just as bright as any other modern OEM mainstream vehicle headlamp. No complains there, I have complains about installation. First of all rubber gasket on them is way too thick, installation was very painful, I had to press really hard in order to snap them in place, I ended up installing them incorrectly. My advise to those who have H11 type. Take gasket from your old halogen bulbs and install them on these led bulbs, you will save tons of your time. After I did that I was able to install them in 1 minute. Make sure “0” mark on bulb is facing down when bulb is installed. it’s very important. Other than that I’m very pleased. I feel like I’m driving new car. However I prefer warm light of my halogen bulbs, these ones have cool white light with hint of blue. Not a big deal but I wish they were warmer in light temperature.