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Best Fuel Efficient Truck Engines in the USA – Ultimate Guide

Commercial trucks are vital in the transportation industry because they move enormous loads of merchandise and commodities. They should be capable of towing, carrying considerable weight, and enduring lengthy hauls and travels. The proper selection of a decent vehicle is critical to meeting your goals, expanding your company, and ensuring truck safety.

A fuel-efficient engine is one of the most significant considerations when buying a commercial vehicle. It impacts not just the truck’s overall performance but also pollution and global warming emissions. It’s also cost-effective for your company since you’ll save a lot of money on diesel.

What are the best fuel-efficient truck engines? If you are interested in getting a fuel-saving truck, you can look at the following options. All these commercial truck engines will impress you with their fuel efficiency. 

D11 Volvo

This is the smallest Volvo engine. It’s small and light, with nine different varieties ranging from 325 to 425 horsepower and 1,250 to 1,550 lb.-ft of torque. Eco-Torque engines are two of the nine varieties, having two driving modes, generally in Low Torque mode for fuel economy.

Detroit DD15

It gets the same mileage as the DD13, ranging from 6.0 to 6.9 MPG @ 1,625 RPM. The power ranges from 400 to 505 horsepower, with torque ranging from 1,471 to 1,671 pound-feet. A DD15 repair kit assures quality and longevity when it’s time to rebuild. If you are looking for fuel efficiency and durability simultaneously, look no further before you go ahead and purchase this engine. 

Paccar PX-7

The PX-7 is recognized for its reliability and durability. Its 11 variants produce 200-360 horsepower and 520-800 lb-ft of peak torque. Its weight is less than 1,200 pounds, making it lighter and reducing fuel usage. It’s ideal for your fleet because of its fuel efficiency and extended life.

Cummins 2020 X15 Efficiency

The fuel efficiency of the Cummins 2020 X15 Efficiency engine is up to 5% better than the X15 Efficiency. It also has the highest uptime, lowest greenhouse gas emissions, and enhanced down speeding for superior performance at lower RPMs. Engines that operate at lower speeds have a longer lifespan.

Volvo D13TC

By catching energy from the exhaust gas and recirculating it to the drive train, the TC or “Turbo Compounding” process reduces fuel usage by 6%. The Volvo D13TC comes in four configurations: High Torque, Economy, Adaptive Gearing, and Super Direct, with 405-455 horsepower and 1,850 lb-ft of torque. Anyone looking forward to having the best safety features in a commercial truck may think about settling down with this engine. It offers an impressive driving experience as well. 

International A26

The high-pressure common rail helps optimize fuel injection pressure to minimize pollutants, making this diesel engine 50 pounds lighter and 5% more fuel-efficient than the 2017 N13. Because of its lighter weight, the truck may carry more cargo without being punished by the DOT for violating load weight laws.

Detroit DD8

It comes in seven different power and torque configurations, ranging from 260 to 375 horsepower and 660 to 1,050 lb-ft. With excellent driving habits, it scores 8.5 MPG. The engine oil and filter maintenance intervals might be as long as 60,000 miles. It’s most commonly seen on bucket trucks and tow trucks.

Cummins X12 2018

This engine is 900 pounds lighter than the X15, and it also improves fuel economy and enables vehicles to transport greater loads. The oil drain may be serviced every 60,000 miles, the fuel filter every 50,000 miles, and the DEF and valve train every 300,000 miles.

D13 Volvo

This engine comes in 22 different configurations, ranging from 375 to 500 horsepower and 1,450 to 1,850 pound-feet of torque at 1000 RPM. It also has the best fuel economy and engine longevity.

How to get maximum fuel efficiency on your commercial truck? 

Truck drivers may also contribute to enhancing the fuel economy of their vehicles. By controlling fuel use, drivers may become an asset to the organization while reducing emissions into the environment. Here are some suggestions to help you save money on diesel:

– Reduce your speed as much as possible

Obviously, driving faster increases fuel use, and fuel consumption drops by 0.14 MPG for every 1 MPH increase in speed. A recommended speed range is 55-60 MPH.

– Make sure the tank isn’t overfilled

The tank overflows with fuel heated by the engine or the sun, and it may leak diesel, add weight to the vehicle, and cause it to slow down.

– Possess decent driving skills

The most significant way to save fuel is to maintain a steady speed and as much as possible avoid unnecessary acceleration and braking. 

– Ensure correct tire pressure

Correctly inflated tires may help fuel efficiency, extend the life of your tires, and make the roads safer.

Fuel economy is critical for prolonging the life of your fleet’s engines. Make sure you have a solid strategy to manage fuel use and costs. This will make a big difference not just in your organization but also in the world. It is a good idea to select a commercial truck that offers excellent fuel efficiency in the first place. Since you will drive a commercial truck for thousands of miles, monitoring fuel efficiency will help you save a considerable amount of money in the long run. 

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