What is the difference between gasoline and diesel engines?

By Product Expert | Posted in Tips and Tricks on Tuesday, May 23rd, 2017 at 10:08 pm
Gas vs diesel engine advantages

Gasoline engines are some of the most common on the road in the United States, but diesel engines are beginning to be in the news more and more. Granted, a lot of the time that is because diesel engines from specific companies have been blasted for their lack of compliance with U.S. emissions regulations. By what is the difference between gasoline and diesel engines? Learn a few gas vs diesel advantages, and why emissions matter, below.

Read More: How long can you drive after the fuel light goes on?

Gas vs diesel engine advantages

There are a lot of advantages to diesel fuel, but many of them are countered or at least balance by disadvantages. Diesel often pays off on large trucks and transport vehicles, because the massive torque available from a diesel engine can help with towing. While the used inventory here at Third Coast Autos is always changing, we generally offer only gasoline models, which are more common and generally less expensive.

Fuel Efficiency and Cost

Diesel fuel burns more efficiently, which means that drivers can generally get more miles to the gallon with diesel than gasoline. However, the higher cost of diesel fuel may counterbalance that efficiency for many vehicle shoppers.

turbo-diesel engine on a while background

Engine Durability and Repairs

Diesel engines are built to take a lot of abuse, so they tend to last longer than gasoline engines, even with a lot of towing and hauling. However, if they break they usually cost more to repair because diesel engines are more complicated.

Starting in the Cold

If you have a diesel vehicle and live in cold weather (so, not where we are in the hot heart of Texas), then you may need a heater to make sure your engine will turn on in the winter. However, a diesel engine doesn’t require spark plugs to activate, so you never have to worry about that ignition problem.

Why diesel fuel emissions matter

Of course one of the challenges with diesel power is the emissions issue. Recently, several diesel vehicles have been penalized for producing falsified emissions testing. All vehicles produce pollution, but diesel engines not designed to minimize emissions send more toxic chemicals into the air, which can seriously interfere with air quality and cause breathing problems. Some diesel engines produce emissions levels comparable to those produced by gasoline engines, and these would be the best to buy.

2 Responses to “What is the difference between gasoline and diesel engines?”

  1. Millie Hue says:

    It’s great to know that diesel makes the vehicle run for more miles because of how it burns efficiently. With that in mind, I will make sure that I will be using a car with this type of fuel. I am a really thrifty person when it comes to my own use, so this information will really benefit me since being fuel efficient for me means that I will be spending less. Thanks!

  2. Michael Ossipoff says:

    I just want to correct something said at a website somewhere: Someone at a website claiming official authority claimed that Diesel fuel puts out 20% more CO2 than gasoline.

    Actually, according to the U.S. Energy Information Administration, for a given BTU output, the burning of Diesel fuel puts out only 2.6% more CO2 , in comparison to gasoline.

    That’s negligible in comparison to the greater efficiency of a Diesel engine.

    Diesel engines and gasoline engines have their own advantages and disadvantages, and the article above covers those well. I just wanted to correct one mis-statement.