WHAT'S INSIDE: 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.
  • Aftermarket Accessories & Customization
  • Auto Manufacturing
  • Car Part Longevity
  • Car Trends & Innovations
  • Cost of Car Ownership
  • Diagnosing Car Problems
  • Engines
  • Exhaust & Emissions
  • Motorcycle Parts & Accessories
  • Options
  • More Topics
FEATURED: UNDER THE HOOD
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FPO

Some of the latest gasoline engines to hit the market are super-efficient, thanks to their engineers playing with a little thing called compression ratio.

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