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.

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How Smart Rearview Mirrors Work

Nissan's Smart Rearview Mirror is the world's first LCD monitor that helps you see more clearly what is behind your vehicle when you're driving down the road.

Can your car tell you when the light's about to change?

Audi's Project Traffic Light Online uses the Audi connect Online system to read the signals from a city's central traffic computer. Will this be the end of waiting at tedious traffic lights?

How Retractable-stud Snow Tires Work

What if you could get snow tires mounted that offered good traction for most wintery days and, when the sleet hit the fan, could offer studded traction on the fly?

How the Open Automotive Alliance Works

Google isn't content with simply syncing smartphones anymore -- the company wants to get its technology much deeper into the car. Will the Open Automotive Alliance be successful?

How Robotic Gas Pumps Work

This robot may be a one-trick pony; but what it does, it does so well. It fills your fuel tank faster and better than you ever could, puny human.

10 Car Features We Wish Came Standard

Everyone wants a loaded car, but it's expensive to get all the options. You have to pay extra, sometimes a lot extra -- like buying-a-whole-Bentley extra -- to get the coolest of the cool bits.

10 Cars to Watch in 2014

Whether you're an all-around gearhead or you’re usually indifferent to cars, you're likely to find something on this list to spark your interest. These autos bring new (and awesome) features to the table for 2014.

Will new motor mounts increase engine response?

Motor mounts normally hold your car's engine firmly in place. But worn-out mounts allow a running engine to shift and bounce in all kinds of unpredictable, power-sapping ways.

How does engine placement affect handling?

There are plenty of great reasons to design a car with its engine in the front; however, the same can be said for placing the engine behind the driver. Does engine placement really matter?

Do exhaust cutouts increase horsepower?

Modern car and truck engines are typically efficient and powerful at the same time. But is there a relatively simple way to free-up some additional horsepower through the exhaust?

How much horsepower does a cold air intake add?

A cold air intake is one of those rare modifications that works pretty well on its own. But how much horsepower can you really expect to gain?

How much horsepower does a performance muffler add?

Replacing your car's stock muffler with a performance muffler is a good idea -- that is, if it's a rusted-out mess and you need to replace it anyway. But will this mod actually increase horsepower?

5 Cheap Ways to Increase Horsepower

If you're serious about increasing your car's horsepower -- and you have deep pockets -- your options are almost unlimited. But what can you do if you're on a tight budget?

5 Signs Your Engine Is Losing Power

Have the horses under your hood turned into mere ponies? If so, you and your four-banger may have a power problem on your hands. Here's how you can tell.

How much horsepower does a supercharger add?

A supercharger is a considerable investment; however, it's also one of the best ways to improve the fun factor of driving your car or truck. How much additional horsepower should you expect?

Does a dual exhaust system improve your car's performance?

It seems like clearing out the exhaust as fast as possible would give you a bit of an edge over the competition. But does a dual exhaust system really improve your car's performance?

How Paintless Dent Removal Works

If you've ever watched a real pro in action, paintless dent removal appears deceptively simple. But is it really as easy as it looks?

10 Serious Mistakes in Car Maintenance

There are so many dangerous, irresponsible and downright ridiculous things you can do to a car while "fixing" it that it was difficult to narrow this list down to just 10 examples.

How the Rotating Detonation Engine Works

How would you like to save $300 to $400 million on your annual fuel bill? The U.S. Navy is ready -- and they'll do it with rotating detonation engines.

10 Problems Cars Can Diagnose By Themselves

Modern cars and trucks can keep track of their own health. The problem often comes when they try to communicate their information to the driver. How does your car talk to you?

How an Electronic Sun Visor Works

A sun visor's primary role in any car is pretty straightforward, right? But as far as automotive designers and aftermarket electronics manufacturers are concerned, anything can be improved.

Fast N' Loud: The Gloss Black Paint Job

A gloss paint job can be tricky, as it easily shows imperfections. With this in mind, the team takes extra special care when painting the '67 Ford Mustang. Get a closer look at the paint job in this video from Fast N' Loud.

Fast N' Loud: The Transmission

After perfecting the paint job, the Gas Monkey crew attempt to install the transmission -- after they've already installed the motor. Check out the video to see if they can get pull off the installation in this video from Fast N' Loud.

Fast N' Loud: Tubing For the Bronco

It's time to build the perfect tubing for the Bronco -- and, of course, this is as much of an art as it is a science. Tune in for a closer look at the building process in this clip from Fast N' Loud.

Fast N' Loud: The Bronco's Rust

The Gas Monkey has run into a problem: the Bronco that they're supposed to restore is almost rusted completely through. Can the guys fix the body in enough time to get it done by the deadline? Tune in and find out in this clip from Fast N' Loud.


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