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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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.

By Kristen Hall-Geisler

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.

By Kristen Hall-Geisler

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.

By Cherise Threewitt

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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?

By Cherise Threewitt

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?

By Kristen Hall-Geisler

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?

By Cherise Threewitt

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?

By Cherise Threewitt

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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?

By Kristen Hall-Geisler

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.

By Nicholas Gerbis

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?

By Cherise Threewitt

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?

By Kristen Hall-Geisler

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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?

By Cherise Threewitt

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.

By Cherise Threewitt

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.

By Cherise Threewitt

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?

By Kristen Hall-Geisler

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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.

By Cherise Threewitt

She talks, she jokes, she knows where all the best restaurants are, and she's even handy with a map. Now Siri may be coming to your car.

By Chris Opfer

Most auto manufacturers want to make it clear that they're not trying to take driving away from the driver. But research shows that we could use a little help in the braking department.

By Kristen Hall-Geisler

Do you know how Opposed Piston Opposed Cylinder (OPOC) engines work? Check out this amazing graphic that explains how OPOC engines work!

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Do you know how sleeve valve engines work? Check out this amazing graphic that explains how sleeve valve engines work!

From a user's standpoint, MirrorLink is pretty slick. It's the magic that makes your smartphone's computer and the car's computer talk to each other.

By Kristen Hall-Geisler

Did you know that Goodyear has been making run-flat tires for NASCAR since 1966? Decades later, tire engineers are still perfecting the design for everyday drivers on public roads.

By Cherise Threewitt

Thieves and thugs will always find a way to take something they didn't work for. But just how vulnerable are modern automobiles to a high-tech attack?

By Akweli Parker

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Will 2013 be a decent year for the auto industry? Well, if these 10 cars can make it to production, there should be a lot of happy motorists out there.

By Cherise Threewitt

Modern car engines can create massive amounts of horsepower -- and everyone wants more power, right? But how much is too much? And how much is just enough?

By Jamie Page Deaton