The lights on the right side are LED compared to standard bulbs on the left. My photo skills aren't so great, but it gives you the impression that they are about equivalent in light output.
The LED backup light is much brighter than the standard bulb.
Brake lights off.
Brake lights on. The standard bulb is just a tiny bit brighter, but not noticeable to the eye.
Brake lights
Tail lights
Backup lights. I paid $12 at the time, not $37.
Front corner lights
As you can see, there are quality LED options out there, but it will cost you. I expect in the next 5 years auto manufacturers will phase out incandescent bulbs in favor of LED. The industry tends to be 10 years behind what I'm doing.
I made these in 2003.
Turn signal - front. Perfboard is painted white on the front so that it isn't visible through the clear bulb cover.
Turn signal - rear
LED is on the right, standard bulb on the left
License plate light
Tail light
Brake light
The brakes have 144 LEDs and over 300 solder joints. I won't be making LED lights this way again.