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 6
Are there worrisome sounds coming from under the hood? Whether it's an annoying ping, a persistent knock, or a dramatic detonation, there are many ways to soothe a noisy engine.
As engines have evolved over the years, so have the pistons within them. In fact, the shape of a piston has a dramatic effect on the combustion process.
Reducing your vehicles carbon footprint is as easy as 1...2...recycle. Learn more about the 6 automotive parts you can easily recycle.
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As a long time automotive writer and enthusiast I am often amazed at the prices mechanics charge for simple repair work that most anybody could do themselves. Learn more about the 6 DIY automotive repairs anyone can do.
Owning jumper cables is like owning a truck. When you own a truck, people seem to cozy up to you when they are moving. Learn more about the 6 great car battery maintenance tips.
Did you know that many insurance companies figure most vehicles on the road have only 10 years of useful life before being carted off to the junkyard? Learn more about the 7 ways to make your whole vehicle last longer, from wheels to wipers.
Lasers have an illumination power that's about 1,000 times more powerful than LEDs. So, will laser-powered headlamps be too intense for other motorists? Are they a traffic incident waiting to happen?
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Did you know that if your car didn't come from the factory with refrigerated seats, there are several manufacturers that would be happy to sell you air-conditioned seat cushions?
At one time, gadgets designed to keep us informed and entertained while on the move came from the automotive aftermarket. Now automakers are providing complex, digitally connected gizmos as factory equipment.
In a world that seems hyperconnected already, are cars the next things to go wired with Internet access?
By Jeff Harder
These days, the majority of the music we listen to is streamed from the Internet and stored on our computers and smartphones. But is there a way we can access online music in our cars and trucks?
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Filling up the tank still hurts, especially while on a road trip. So how can you do it without breaking the bank?
If you've got the right gadgets, you can already use voice commands to control things like your GPS and phone from the driver's seat. How close are we to voice activation as an affordable car option -- and what we will we say when we have it?
The main purpose of a tire sidewall is to provide lateral stability. You can learn more about the functions of a tire sidewall by reading this article.
Manual transmission synchronizers are devices that eliminate the need for double clutching when changing gears. Learn how manual transmission synchronizers work in this article.
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Once a tire has all its components assembled, it’s still only a green tire, without any tread patterns or markings. You can learn more about a tire’s vulcanization process from this article.
Car engines that run on gasoline aren't the only kind of internal combustion engines. Learn about the types of internal combustion engines in this article.
Tires do have their limits when it comes to weight capacity. Learn about tire load ratings from this article.
To reduce your cars emissions, you can help its catalytic converter work more efficiently by preheating it, or you can inject a urea solution into your exhaust pipe. Learn what you can do to reduce your car's emissions in this article.
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Distributor caps and rotors help transfer the spark from the coil to the cylinder. Learn how distributor caps and rotors function in ignition systems in this article.
Before embarking on a project like replacing your car’s engine oil, you need to decide which size socket wrench you should use. Learn more about what size socket wrench you need for an oil drain plug from this article.
The noise you hear is not from gears grinding against each other, it's from the dog teeth on the gears. Learn why cars make noise when you shift gears poorly in this article.
Do you have to remove your intake manifold because your internal combustion engine isn't getting enough airflow? Learn about how to remove your car's intake manifold in this article.
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Every time you park your car under a tree you find tree sap on the hood. We'll give you a few solutions to removing tree sap from your car.
You'd like change your car's windshield wiper blades, but you're not sure how. We will now give you instructions on how to change wiper blades.