Why are diesel engines more efficient?

Posted on 10/3/2018

A close up of a car engine with the hood open | J&H Automotive

Why are diesel engines more efficient? You know I didn't know the answer to this one, with as long as I have been married to a master certified tech who all he does is talk about cars - okay so I'll give him 85% of the time he's talking about cars - you would think this one would have crossed our conversation. I talked with Jason and asked him why...his response was one that you would expect he started to go on and on. I said I need simple, people are asking, plus after all these years I still don't understand when he starts getting technical on things, or maybe just glassing over. Simply it is because diesel fuel has 30% more energy than gasoline, which makes it more efficient. If you would like more of the technicalities I can get those for you too. 



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Heather

By jhautoinc January 30, 2026
These are vital to keep you safe on the road.
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Your engine will thank you.
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It's better for your engine. 
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A spark plug gap can cause a misfire.
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They're important to keep you safe on the road.
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It's more often than you think.
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