Bulbs that take 0 to 15 seconds to reach near ... and over 63 seconds scored poor. The Sylvania Ultra-LED 100W LED20A21/DIM/0/827 is part of the Lightbulbs test program at Consumer Reports.

A website touting the Sylvania SilverStar headlight bulb says it provides "up to 30 percent" greater visibility down the road. That sounds impressive until you read the fine print: "compared with ...

The red gaskets in our new bulbs were thicker and stiffer than the Sylvania Silverstar bulbs we replaced, so they needed a very firm push on the aluminum heat sink. Our bulbs came with additional ...

Both of these bulb types lose light output over time ... When you want a simple replacement halogen, familiar brands like ...