Under the Hood
The Under the Hood Channel explores the systems that make your car function correctly. Learn about car parts and systems and how to do routine maintenance.
10 Popular Car Modifications
10 Car Accessories That Could Be Dangerous
What makes certain car accessories unsafe (or even illegal)?
Modern Cars Are Kind of Boring. Why Is That?
Can car companies let known defects go without a recall?
Do car interiors turn toxic in the summer?
Making a Car Last for 300,000 Miles Is Totally Possible — Here's How
Are cars designed to fail at a certain point?
Will it hurt to spray electrical contact cleaner in an ignition?
What's the Fastest Car in the World?
Is Your Junk in the Trunk or the 'Frunk'?
The GM Car That Has No Steering Wheel or Pedals
The Long Strange History of License Plates in the U.S.
Do red cars get pulled over more often for speeding?
Are extended car warranties worth it?
8 Signs to Identify Bad Fuel Pump Symptoms
All You Need to Know About Bad Alternator vs Bad Battery
How to Diagnose and Fix a Brake Fluid Leak
How Gas Compression-ignition Engines Work
Did cars ever have external combustion engines?
How does engine placement affect handling?
Diesel Isn't Always a Worse Polluter Than Gasoline
How Coal Rollers Work
How Much Air Pollution Comes From Cars?
10 Cold-weather Motorcycle Accessories
Is all motorcycle apparel made of leather?
What motorcycle accessories will help me stay cool?
How Laser-powered Headlights Work
How Air-Conditioned Seats Work
5 Useful Voice-activated Commands for Your Car
How to Avoid a 'Hurricane Car'
6 Automotive Parts You Can Easily Recycle
10 Places to Look for Classic Car Parts
How Does Vertical Acceleration Work?
How Car Suspensions Work
How Car Steering Works
How Differentials Work
Why the Stick Shift Is Going Extinct
Gas-powered vs. Electric Cars: Which Is Faster?
The Dirty Truth About How Often You Need Your Oil Changed
How to Replace Your Car's Serpentine Belt
Is Your Car Road-trip Ready?
How Many Wheels Are in the World?
Why Do Tires Blow Out More in Summer?
Winter Tires Really Do Make a Difference in the White Stuff
How Automobile Ignition Systems Work
What Is an Ignition Coil?
Can your car tell you when the light's about to change?
Learn More / Page 7
You find liquid leaking from your car and are at a loss about what to do. Learn about how to identify a transmission fluid leak in this article.
There's no reason you can't enjoy riding a motorcycle all year long. Prepare for the special challenges of winter with the right equipment and clothing.
By Thomas Moore
To ride safely when it's hot, you have to dress to protect yourself against hyperthermia, drink plenty of liquids and stop to rest in the shade.
By Jeff Harder
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Today's motorcycle apparel can be made of leather or modern synthetics. Both provide abrasion resistance in case of a crash, but leather will give you the best protection.
You're driving out of a parking lot when you suddenly feel that you're having problems with the power steering. Learn about how to diagnose power steering problems in this article.
Rebuilding a carburetor is easier than it sounds and cheaper than paying a mechanic. Learn about how to rebuild a carburetor in this article.
With hundreds of hours and thousands of dollars, you can restore a real classic car. The crux can be finding the parts to make it look like a full-scale version of a plastic hobby model. So where can you find the right parts?
By Garth Sundem
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Your car has been acting up lately and you're wondering if you have a blown head gasket on your engine. Learn how to tell if you have a blown head gasket from this article.
The radiator of your car is composed of tubes that carry the coolant fluid, a protective cap that’s actually a pressure valve, and a tank on each side to catch the coolant overflow. Learn more about how a radiator cap works from this article.
The job of a car's cooling system is to release the surplus heat from the engine as the car burns fuel. So what happens when it fails?
Have you ever hit a bump in the road and gone flying up in the air? Learn how vertical acceleration works in this article.
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Make sure your tires are properly aligned for a good driving experience. Learn about how wheel alignment affects tire wear in this article.
Diesel engines and gas engines work in different ways. What makes diesel fuel injection systems so different?
The ignition coil passes its power to the cylinders through a distributor. Learn how to wire an ignition coil to a distributor in this article.
Make sure your tires are properly inflated, because over inflation can lead to problems. Learn about how over inflation affects tire wear from this article.
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Make sure your tires are properly inflated – under inflation can lead to poor performance. Learn about how under inflation effects tire wear in this article.
You've found it: that dream car that you've always wanted to own. But as you look closer, you notice two words on the edge of the "for sale" sign or the bottom of the online ad: "salvage title." Why might the car have this kind of title?
Buying a salvage car can be a gamble with your time, money and effort. But if you do your research, you could win big. Don't and you could lose everything.
Women are no longer just hanging on to the guy driving the bike. Today, they’re discovering the fun of motorcycles on their own, and they want to outfit themselves for safety, comfort and fashion. So what do they need?
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Buying the right kind of insurance can be tricky with any car, but if you're dealing with one that has a salvage title, it can be even more difficult.
By Garth Sundem
Hot weather is a blessing and a curse for motorcyclists. You can hit the open road virtually any time you'd like, but it's difficult to stay comfortable under the blazing sun. Here are some key items to help you avoid a sweltering journey.
By Jeff Harder
Reconstructing classic cars to their former glory is a popular hobby, and as such, there are many reasons why millions of passionate enthusiasts get involved. But can every classic car be saved?
You're ready to go out on your motorcycle when you find that the battery needs charging. Learn how to charge a motorcycle battery in this article.
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Visiting a junkyard could mean finding a quarter-panel for a dinged VW Beetle or salvaging a motor from a totaled new-model sedan. But what about gangster cars or even space junk?
Floods have drenched much of the U.S. in recent years, and when subject to deep flood levels, soaked cars are often classified as totaled and are demolished. Some flooded automobiles, though, end up on used car dealer lots. How can you spot one?