Thursday, October 6

Diesel vs Gasoline Cars: Similarities and Differences | Digital Trends Spanish

dodiesel vs gasoline? The truth is that many things separate them. For starters, you will never be able to interchange spark plugs on a diesel engine with glow plugs on a gasoline engine. Both technologies are similar in that they ignite a fuel inside the cylinders to create power and torque; but there are also important differences in the way these types of vehicles work. We tell you!

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Diesel vs gasoline cars

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Both diesel and gasoline are internal combustion engines (ICE). This means that fuel mixes with air as it enters the engine and is compressed internally, inside the cylinders. At some point, the fuel ignites (explodes), pushing a piston down and turning the crankshaft, which is connected to the vehicle’s transmission and ultimately turns the wheels. The piston then moves up the cylinder, pushing the burned gases out of the engine through the exhaust pipe. this cycle repeats several times per second.

The more cylinders an engine has, the more fluid it will tend to run, and the more power it will have. However, it will also be more complex. The way cylinders are configured influences performance, vibration, and other factors. And this is true for both gasoline and diesel engines.

Where both engines diverge is in how the fuel inside the engine is ignited. In a gasoline engine, air and fuel are compressed and, at a critical point, a spark plug ignites the mixture. But in a diesel engine there are no spark plugs. The extreme compression of diesel and air generates so much heat that the mixture spontaneously explodes. This is known as “compression ignition” and is the basis of how a diesel engine works.

the price difference

diesel vs gasoline cars

Diesel fuel, which is syrupy compared to gasoline (more watery), packs more punch in terms of energy per unit weight than gasoline (eg, per gallon or liter). Therefore, although it often costs more than gasoline, it contains more energy. potential, so less diesel is required than gasoline to accomplish the same amount of work (in this case, driving distance). In terms of comparative costs, it is a small advantage for any fuel, depending on the price difference, the vehicle and the driving style. But, in general, the final cost to use either fuel over time will be about the same.

Diesel vehicle owners also have another fuel option: biodiesel, which is made from sources other than petroleum, such as frying oil or vegetable oil. In fact, the first diesel engines ran on fuel derived from peanut oil. And although making your own gasoline at home is very complex, dangerous and inadvisable, it is possible to make biodiesel safely using prefabricated kits.

Power: horsepower vs. torque

Both engines are measured in terms of horsepower and torque. Horsepower is a measure of power, while torque is a measure of the torque of an engine on the driveline. Large amounts of both are great, but if you have a lot of horsepower with little torque, your vehicle will be slow to start. It’s torque that makes things move, which is why diesel engines are often used in large vehicles. They are ideal for moving heavy loads because they have a lot of torque, although they do not accelerate very much, since they have less horsepower on average than gasoline engines. It’s also the reason why you don’t see many sports cars with diesel engines under the hood.

What automakers have discovered is that drivers love torque, in trucks as well as cars. When you step on the accelerator, a diesel-powered car will have rapid acceleration. Coupled with a capable transmission, modern diesel engines can be started quickly and in a hurry. And while they won’t reach as high speeds as gasoline engines, this isn’t usually a problem for most users, who prefer to have real-world acceleration power (torque) and good fuel economy, rather than be able to reach (in theory) high speeds that they will otherwise never reach on highways or public roads, unless they want to earn a citation or visit to jail for reckless driving.


diesel vs gasoline cars

Because diesel engines use compression ignition, they have a lot of resistance. And because they come from a workhorse heritage, they tend to be dependable and require little care. They used to be heavy, but with modern manufacturing methods their weight has been reduced considerably and they are now almost on par with gasoline engines.

In addition, a diesel engine is simpler, since it does not have spark plugs or the electrical system associated with them. In general, a diesel engine tends to last longer than a gas engine in terms of the number of miles or hours before it needs a major overhaul, so repair bills are smaller and more spread out over time.


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This is one of the reasons why diesel engines have traditionally had a bad name, especially in the wake of Dieselgate. But it must also be said that technology has advanced and has made these engines cleaner than ever. Also, many diesel cars now use an additive called DEF, also known as AdBlue. It is a liquid additive that is kept in a small tank and is used to make diesel exhaust cleaner.

Many diesel cars now use a separate additive called DEF, also known as AdBlue. This is a urea-based liquid additive that is kept in a small tank on board the vehicle, and is used to keep diesel exhaust cleaner.


Early diesel cars sounded like trucks, yes, but again modern technology has largely mitigated this. The noise pollution often associated with older diesel engines has disappeared along with those distant clouds of black smoke they left behind.

What cars are available with diesel engines?

Chevrolet’s Colorado and Silverado models (pictured) are available with an underhood turbodiesel, as are their GMC-badged twins, the Canyon and Sierra. If you’re a Ford loyalist, your only option will be the F-150. Alternatively, the Ram 1500 is expected to return to diesel very soon and with more power than before.

Diesel engines are also in an off-roader: the Jeep Wrangler will finally be available with one of these in the United States. The Gladiator, which is closely related to the Wrangler, will be available with the same engine very soon as well.

Jaguar-Land Rover is also a proponent of clean diesel technology. If you haven’t driven a diesel since Ronald Reagan was in the White House, the Range Rover Td6 will totally blow your mind. To add context, the diesel-powered Range Rover delivers 22 mpg in the city, 28 mpg on the highway and 24 on a combined cycle, according to the EPA. Order the same SUV with a six-cylinder gas engine, and watch those numbers drop to 17, 23, and 19, respectively.

Finally, the Mazda CX-5 is available with a four-cylinder turbodiesel engine. Mind you, this engine is only offered on the Signature trim level, which starts at $41,000.

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