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Auto | Under the Hood | Mechanical Auto Problems

Learning to diagnose mechanical auto problems can save you time and money on your vehicle. In this section, get familiar with the inner workings of your car and learn how to tell what may be wrong with it.

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How do I know my car is getting its best mpg?

Are your driving habits draining money out of your gas tank? What steps can you take to ensure you're getting your vehicle's best MPG?


Quiz: Do I need a mechanic?

 Quiz: Do I need a mechanic?

Think you can pass our DIY auto repair quiz? Test your knowledge to see if you know when it's time to call a pro. See more »

5 Signs Your Engine Is Losing Power

 5 Signs Your Engine Is Losing Power

Can you name five signs that point to power loss for your car engine? HowStuffWorks can help you identify power loss problems for your engine. See more »

 How to Tell If You Have a Blown Head Gasket

How to tell if you have a blown head gasket. Check out HowStuffWorks.com to learn more about hot to tell if you have a blown head gasket. See more »

Should I replace or repair my car?

 Should I replace or repair my car?

Should I replace or repair my car? Visit TLC Home to find out if you should replace or repair your car. See more »

Top 10 Signs of Transmission Trouble

 Top 10 Signs of Transmission Trouble

The top 5 signs of transmission trouble could indicate major problems. Visit HowStuffWorks to see the top 5 signs of transmission trouble. See more »

Top 5 Signs of Engine Trouble

 Top 5 Signs of Engine Trouble

The top 5 signs of engine trouble could indicate major problems. Visit HowStuffWorks to see the top 5 signs of engine trouble. See more »

Top 5 Signs of Alternator Problems

 Top 5 Signs of Alternator Problems

The top 5 signs of alternator problems could indicate major trouble. Visit HowStuffWorks to learn the top 5 signs of alternator problems. See more »

How do I know my car is getting its best mpg?

 How do I know my car is getting its best mpg?

How do I know my car is getting its best MPG? Visit HowStuffWorks to learn how to know if your car is getting its best MPG. See more »

What does the check engine light usually mean?

 What does the check engine light usually mean?

What does the check engine light usually mean? Visit HowStuffWorks to learn what the check engine light usually means. See more »

Does the Kaizen philosophy prevent auto problems?

 Does the Kaizen philosophy prevent auto problems?

Does the Kaizen philosophy prevent auto problems? Visit HowStuffWorks to learn if the Kaizen philosophy prevents auto problems. See more »