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. 



Happy Adventures


Heather

By jhautoinc December 12, 2025
They help prevent excess engine wear.
By jhautoinc December 9, 2025
This is why your car isn't warming up properly.
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It's an important component.
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This requires some testing...
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A bit of maintenance can save you.
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A brake inspection can prevent this.
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It's more important than you think.
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Is it age or an issue?