Actual products · Independent testing

Find better headlights for your vehicle, backed by real testing.

We physically install, measure, and photograph bulbs and kits in real headlight housings—then connect those results to the vehicle you actually drive.

Bulb Test Results Factory Headlights Find Your Bulb Size
Start with your vehicle

Find what fits

We'll remember it while you browse.

Loading the BulbFacts vehicle catalog…

Start with your situation

Are you upgrading a vehicle, or choosing one with better headlights?

Both paths matter. If you already own the vehicle, start with product test data. If you are shopping for a vehicle, start with the factory headlight system, trim package, aim, and technology.

Upgrade my current vehicle LED, halogen, HID, and Xenon product tests Research factory headlights Vehicle, trim, package, and system comparisons Help me choose Start with the upgrade guide
Product testing Bulb & kit testing For the vehicle you already own
Product testing and upgrade research

Facts, tests, and reviews for replacement bulbs and aftermarket kits

This is the original BulbFacts testing path: real products installed in test housings, measured against known baselines, photographed for beam pattern behavior, and reviewed with practical notes about fitment, glare, power, heat, price, and ownership tradeoffs.

How to upgrade
Test charts Compare measured lux, score, lumens, Kelvin, wattage, price, and beam behavior.
Product reviews Read notes from actual LED, halogen, HID kit, and Xenon replacement testing.
Recommended picks Shortlist the products that make the most sense for different headlight types.
Beam facts See why brightness alone does not decide whether a bulb is a good upgrade.
Independent product testing

Best headlight bulbs, tested and compared

Hands-on reviews, recommendations, and comparison charts for every major replacement-bulb category.

175+ LED Upgrade Kits Tested

Aftermarket LED

LED headlight bulb reviews for reflector headlights and projector headlights
Recommended Reviews Chart
100+ Halogen Bulbs Tested

Halogen

Halogen headlight bulb comparisons for brighter factory-style replacements
Recommended Reviews Chart
25+ HID Kits Tested

Aftermarket HID

HID kit reviews and test charts for projector headlight upgrades
Recommended Reviews Chart
50+ D-Series Xenon Bulbs Tested

Xenon

D-series Xenon bulb reviews for D1S, D2S, D3S, D4S, and other HID replacements
Recommended Reviews Chart
Original vehicle research

Compare the best factory headlights by vehicle

See how the headlights that came with a vehicle perform before you buy. Research includes lighting technology, trim and package differences, aim or glare concerns, and whether an upgrade is actually needed.

All vehicle reviews Compare vehicles
Vehicle category

SUVs & Crossovers

Compare factory LEDs, halogen systems, and the trim packages that can change what you get.

Browse SUV research
Vehicle category

Cars & Sedans

Research sedans, hatchbacks, wagons, and coupes where trim language often decides the system.

Browse car research
Vehicle category

Pickup Trucks

Check factory technology alongside package differences, ride height, headlight aim, and glare.

Browse truck research
Vehicle category

Electric & Hybrid

Understand integrated LED and adaptive systems that may not have a replaceable bulb at all.

Browse EV research
Automotive lighting research

Connect the product tests with the vehicle research

Use the bulb and kit tests when you are upgrading the vehicle you already own. Use Factory Headlights when the vehicle, trim, or integrated lighting system may decide whether an upgrade is needed at all.

How BulbFacts works

Test the product. Research the vehicle.

BulbFacts combines hands-on product tests with research into the vehicle’s original headlight system, connecting measured evidence to the car you actually drive.

Test the product Installed in real reflector and projector housings, then measured for output, beam pattern, power, color temperature, and heat.

Research the vehicle Research bulb sizes, factory technology, trim differences, integrated LEDs, and known aim or glare concerns.

Match the evidence Combine product-test results with vehicle-specific data to provide practical guidance for the car you actually drive.

See how we test → Explore vehicle research →
BulbFacts headlight housing test bench with an illuminated headlight
Products installed and measured
Car headlights on a dark road during a BulbFacts lighting comparison
Beam pattern and road visibility
Toyota Camry used to represent BulbFacts vehicle and factory headlight research
Vehicle, trim, and factory-system research
A quick note about BulbFacts

We actually test what we recommend.

BulbFacts is a small independent automotive-lighting test site. We install the products we review in real reflector and projector housings, measure output, power, and color temperature, and photograph the beam pattern. The goal is not the biggest advertised number—it is a better-performing, better-matched light.

See How We Test