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Definitions: Turbocharged Engine

Pros: A turbocharged engine is typically more fuel-efficient than a regular engine at a given horsepower; pleasant punch for passing and merging

Cons: It can be thirstier than a regular engine if you have a heavy foot; turbochargers themselves can fail and be costly to replace

Summary: If you’re shopping for a car and see the term "turbo" or "turbocharged engine," it means that the engine employs a device called a turbocharger. A turbocharger is an add-on part that uses recycled exhaust gases to — quite literally — boost an engine’s performance. Find a car for sale near you

Turbocharged engines are very popular today because of their Jekyll and Hyde personality. Since the turbocharger generates extra power, it allows smaller turbocharged engines to equal larger non-turbocharged ones in acceleration. But because the turbocharged engines are smaller, they’re also generally capable of better fuel economy. It’s like having two engines in one: a small, economical engine for ordinary driving and a responsive, high-performance engine for passing and such.

But turbocharged engines are only more fuel-efficient when you drive with a light foot. Once you get the turbocharger all worked up, even a small turbocharged engine can suck down gas just like those larger engines. So if you drive aggressively, you may want to consider a larger non-turbocharged engine, as you’re not likely to see huge fuel economy gains with that driving style.

You also should consider that the turbocharger is another moving part that can fail. In fact, it often does fail during the life of the car. Not surprisingly, replacement turbochargers generally aren’t cheap.

What it means to you: In this era of ever-increasing fuel economy standards, the turbocharged engine is here to stay, and that’s a good thing. Just don’t necessarily expect miracles in terms of fuel economy, though some are very thrifty. "Your mileage may vary" is the operative phrase here.

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Editor’s Note: This article has been updated for accuracy since it was originally published.

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3 COMMENTS

  1. Now this  fuel economy boost  car… this one for show because i like a lot to do a whole lot of lot of when am bother with work an all

  2. 3.5 Eco-Boost is one of the greatest engines ever built!!! Thank-You Ford Motor Company!!! You All Really did your homework on this Great Power-Plant!!!

    • My 2.0i subaru will beat 3.5 Eco-boost with no turbo, while getting betting mpg…. Thats a no for me on greatest engine ever built xD

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