Diesel vs. Gas Trucks

Which is Better?



Uses Combustion




Repair Costs




Torque Output

Not Needed

Spark Plugs


There’s a lot to consider when you’re shopping for a new or used truck. Whether you’re eyeing a 2019 Ram 3500 Chassis Cab or another model, one of the questions you’re likely to ask is, “Is diesel better than gas?” It depends wholly on your needs. Below, you can compare diesel vs. gas trucks and decide which is better for your business, based on factors like capability, gas mileage, and durability.

When is a Diesel Truck the Better Pick?

  • Torque Output: Diesel trucks are renowned for their sky-high torque outputs, which generally makes them stronger haulers and great options for jobs that demand heavy-duty capabilities.
  • Fuel Economy: In most cases, diesel engines are more expensive than gas engines, but they offer higher fuel economy ratings. This means you can travel freely around Milwaukee without always having to stick close to a pump. Commercial truck telematics can help your fleet move even more efficiently.
  • Reliability: Compared to gas engines, diesel engines have a simpler design. Because they have fewer moving parts, chances are you’ll run into fewer problems throughout the engine’s lifespan.
Black 2019 GMC Sierra Parked Near Cliffs

When is a Gas Truck the Better Pick?

  • Horsepower & Acceleration: When it comes to horsepower and acceleration, gas engines have the upper hand.
  • Easier Fuel Fill-Ups: You can find a gas station easily, no matter where you go. It can be more of a challenge to find a gas station that also sells diesel fuel.
  • Easier Maintenance: On the whole, service technicians are more familiar with gas vs. diesel engines. This translates to lower engine repair costs, parts replacements, and tuneups.

Diesel vs. Gas Trucks: What to Consider

We’ve covered some of the basics above, but what about nitty gritty differences like combustion, compression, and temperature?

  • Combustion: In this regard, is diesel better than gas? Not necessarily, as both gas- and diesel-powered engines utilize combustion technology.
  • Compression: On average, diesel engines have a typical compression ratio of 15:1 and 25:1. This ratio is higher than the average ratio for gas engines, which is 10:1. Diesel engines can self-ignite without the use of spark plugs. 
  • Temperature: There’s a small difference between the maximum cold and hot temperatures in gas and diesel engines’ cycles. This small difference translates to greater fuel-efficiency from a diesel engine.
2019 RAM Chassis Cab at Construction Site

Shop New & Used Trucks for Sale at Lynch Truck Center!

Is gas better than diesel — or vice versa? Again, it depends on what you need from a truck’s engine, be it high torque output, good fuel-efficiency, or convenience. If you have questions about diesel maintenance or our truck lineups, contact us at Lynch Truck Center. While you’re at it, learn a little more about your options by comparing the Ford F-450 vs. F-550. You’re also welcome to visit us near Racine to speak with our knowledgeable staff in person.

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