Five Reasons Why Diesel Makes More Torque than Gas

Diesels are known for incredible torque. But how do they make so much?

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Diesel engines have always been about one thing: torque. Horsepower might be the stat that everyone cares about, but accessible torque does wonders for drivability. That's what made diesel so great, until, y'know, VW kind of ruined it for everyone.

To many, diesel and gas would appear similar on the surface. A gloss over of specs would make you think that these engines are nearly identical, except for the power figures they produce.

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What makes a diesel engine able to provide so much more torque than an equivalent gas engine? There are many factors, but five major ones are compression ratio, combustion rate, stroke length, turbos, and energy density. As I am not close to being an engineer–I'm closer to being the opposite of one–I'm not best qualified to explain what makes these powertrains so much different.

Luckily, friend of R&T Jason Fenske from Engineering Explained is more than qualified to tell you what makes these engines so different.

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