Overall I'm very happy with these lights, especially for the price ($40 per set). In my 2017 VW GLI, I replaced the standard halogen lamps in the low beam, high beam and fog lights with these LEDs. My car has reflector headlights. The top and bottom are both H7 bulbs. Fog lights have H11 bulbs. The OEM halogen bulbs were terrible brightness and yellow in color. I think VW used cheap bulbs. These LED replacement bulbs are bright white. They look a lot better and a lot brighter. The difference in brightness is visible in the photos, but it is even more noticeable in person. I adjusted the headlights down (after taking these photos) because the LED beams are a bit higher on the road. The fog lights were very easy to replace. Simply twist, lock and connect the electrical connector. As for the beam, you can see in the photo that the white part is almost the same as the halogen, but there is another beam of more yellow color on top. I'm not sure if it's the bulb or the fog light reflector. The headlight bulbs emit a similar additional amber light. That's the only reason I didn't give them 5 stars. My guess is that the second beam increases glare when used in fog. This is not noticeable either when looking into the headlights or when driving under normal conditions. LED fog lights also provide more light directly in front of the vehicle. I actually like it because it offers more even lighting. Headlights emit a more direct/focused light. I chose them because they best mimic the filament of a lamp. There are no dead zones. Finally, these lights indicate errors when I start the car. I get a series of messages to check the bulbs and the headlight warning light in the instrument cluster comes on. But as soon as I actually turn on the headlights and fog lights, the warning light goes out. It's not a big deal to me and not worth spending $25 on each set of CAN-BUS decoders. There is no flicker or interference. I'll update this review later if I run into any issues, but so far so good.
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