In the vast tapestry of American road travel where highways weave through verdant landscapes, bustling cities, and long stretches of desert reliability becomes not just a preference but a necessity.
Especially for those who embark on long-haul journeys or frequently tow trailers full of victuals, tools, or toys, diesel engines have long been trusted companions.
But not all diesels are crafted equally. Some wither under pressure, while others transcend expectations, proving themselves time and again in the crucible of real-world endurance.
Today, we delve into the intricate mosaic of diesel engineering and highlight eight diesels that survive long highway pulls without issues vehicles that have reimagined what dependability means for American drivers.
1. Ford Super Duty 6.7L Power Stroke (F-250/F-350)
The 6.7L Power Stroke diesel V8 in Ford’s Super Duty lineup orchestrates sheer brute strength with finesse. With up to 1,200 lb-ft of torque in its latest iteration, it was clearly engineered for labyrinth-level towing scenarios.
Whether it’s hauling a horse trailer through the Rockies or conquering coast-to-coast drives, this engine thrives under sustained pressure. Its high-pressure fuel system and air-to-water intercooler make long pulls feel like casual jaunts.
Heavy-duty pickups like the Ford F-series don’t take leisurely one-hour lunch breaks, they’re built to work hard. Ford’s latest Super Duty lineup pushes boundaries with unmatched horsepower, torque, and advanced driver-assistance features. While the half-ton F-150 serves plenty of needs, the F-250 and F-350 Super Duty models are the ones that truly move mountains.
Every Super Duty packs a V-8 under the hood, but the size and power vary depending on the trim. The base XL trim comes with a 400-hp 6.8-liter V-8 producing 445 pound-feet of torque. At the top sits the beastly 6.7-liter V-8 High-Output Power Stroke Diesel, boasting 500 horsepower and a staggering 1050 pound-feet of torque.
Properly equipped, the Super Duty can haul up to 8000 pounds of payload or tow an impressive 40,000 pounds with a gooseneck trailer. The available Ford Pro Trailer Hitch Assist simplifies hitching by automatically aligning the hitch ball and braking the truck once it’s in place. Ford also introduces clever innovations like the industry’s first “tailgate down” backup camera and a built-in 5G Wi-Fi hotspot.
For 2023, Ford’s heavy-duty pickup gets a complete overhaul from the tires up, with refreshed engines and bold new styling. The 7.3-liter V-8 benefits from a revised air intake and improved tuning, while an all-new 6.7-liter Power Stroke V-8 diesel joins the lineup.
The exterior design now mirrors Ford’s smaller F-150 and Maverick models, featuring the brand’s signature “C-clamp” lighting. Functional side vents replace the trend of fake ones, emphasizing form and function.
Inside, the cabin has been redesigned with a new dashboard, a digital instrument cluster, and an available 12.0-inch infotainment display. Four-wheel drive now comes standard on XLT and Lariat trims, not just the upper King Ranch, Platinum, and Limited models, while rear-wheel drive remains the default on the base XL.
The 2023 Super Duty lineup maintains the same trim hierarchy as the previous generation. The midlevel Lariat stands out as the sweet spot, offering valuable comfort features, such as LED lighting, power-adjustable front seats, a 360-degree camera system, and a premium B&O audio setup, without reaching the premium price tags of the King Ranch and Platinum trims.
The base XL comes with a 6.8-liter V-8 delivering 400 horsepower and 445 pound-feet of torque. Moving up, the XLT and higher trims receive a more potent 7.3-liter V-8 pumping out 430 horsepower and 485 pound-feet of torque.
For those craving maximum power, the crown jewel is the 6.7-liter Power Stroke diesel V-8, producing between 475–500 horsepower and a massive 1050–1200 pound-feet of torque, with the higher numbers exclusive to the high-output variant.
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2. Ram 2500/3500 with 6.7L Cummins Turbo Diesel
When enthusiasts and tradespeople intertwine their needs with proven longevity, they often gravitate toward the Ram’s Cummins diesel. Known for its iron-block strength and exceptional cooling, the Cummins engine feels purpose-built for endless asphalt stretches.
Its lineage dates back decades, and its recent iterations blend classic durability with modern emissions systems that don’t compromise on performance. This engine is a captivating fusion of old-school grit and new-age resilience.
Today, alongside their partners at Ram, Cummins Inc. (NYSE: CMI) introduced the new 2025 6.7-liter Turbo Diesel Pickup engine system for Ram Heavy Duty trucks—the most advanced diesel pickup engine they’ve built to date. As part of this launch, Cummins and Stellantis have extended their partnership through 2030, ensuring continued innovation for two of the most iconic names in the pickup industry.
Cummins’ advanced 6.7-liter Turbo Diesel engine system and powertrain will be available in the upcoming 2025 Ram 2500 and 3500 Heavy Duty Pickups, as well as the Ram 3500, 4500, and 5500 Chassis Cab models.
This next-generation Cummins 6.7L Turbo Diesel was engineered with an unwavering focus on reliability and durability, staying true to the 106-year-old brand’s reputation while setting new standards for performance and efficiency.
The latest engine delivers notable gains, with High-Output ratings of 430 horsepower and 1,075 lb.-ft. of torque for pickups, and 360 horsepower and 800 lb.-ft. of torque for Chassis Cab models. Working closely with Ram and their powertrain suppliers, Cummins optimized this engine with a new 8-speed transmission, ensuring the perfect blend of power, responsiveness, and drivability.
“Whether you are towing heavy loads for work or pulling your weekend camper, Cummins 6.7 Turbo Diesel is ready for any project. All 2025 Ram Heavy Duty trucks equipped with the Cummins engine showcase improved acceleration and power, enhancing overall performance and towing capabilities.
The Ram 2500 specifically benefits from improved towing speeds and responsiveness, with faster 0–60 mph and quarter-mile times, particularly under heavy load conditions. These upgrades provide smoother transient responses and greater driver confidence when towing. Noise, vibration, and harshness have also been minimized through the use of helical valve train synchronizing gears, resulting in a quieter ride.
Cummins’ newest offering for pickups and Chassis Cab models also introduces advanced emissions air handling with a redesigned airflow management system. Complementing this is a new high-pressure fuel delivery setup that incorporates top-feed dry service injectors and an updated fuel pump. The engine also features Cummins’ latest variable-geometry turbocharger, delivering intelligent, condition-based power output with faster, more efficient performance.
Serviceability was another key focus. Cummins has integrated features that simplify maintenance and minimize downtime. Software updates can now be completed directly from inside the truck. The oil filter and dual fuel filter have been strategically positioned for top-side access, streamlining maintenance tasks and reducing service complexity on the 2025 Cummins 6.7-liter Turbo Diesel.
3. Chevrolet Silverado 2500HD/3500HD with 6.6L Duramax
The Duramax 6.6L V8 diesel is a stalwart in GM’s lineup certainly one of the most trustworthy engines when it comes to high-mileage towing.
Paired with the Allison 10-speed transmission, this setup beckons drivers to take on mountainous terrain or long, flat Texas highways without a second thought.
The engine’s balance of power and cooling sophistication orchestrates an effortless driving experience even under max load. Hardworking Americans and heavy-duty pickups like the Chevy Silverado HD go together as naturally as beans at a barbecue. When it comes to towing massive equipment or taking on tasks that feel like moving mountains, the Silverado 2500HD and 3500HD never clock out.
With the available Duramax diesel engine delivering 910 pound-feet of torque, these trucks boast an incredible towing capacity of up to 36,000 pounds. Despite their rugged workhorse nature, fully loaded Silverado HD models in the High Country trim manage to bring luxury into the mix.
For 2023, the Silverado HD carries over without significant changes, but Chevy has already confirmed a styling refresh and equipment updates for 2024. Pricing for the 2023 Silverado 2500HD and 3500HD starts at $43,395 and rises to $72,595 depending on trim and options.
he lineup spans from the Work Truck at $43,395 to $44,595, to the Custom at $47,595, LT trims ranging from $47,595 to $48,795, LTZ at $57,195 to $60,195, and the range-topping High Country at $71,395 to $72,595. Our pick would be the 2500HD with the crew cab and standard cargo bed, equipped with four-wheel drive and the refined Duramax diesel powertrain on the LT trim.
The Z71 Off-Road package adds rugged upgrades like 18-inch wheels, all-terrain tires, a spray-in bedliner, upgraded suspension, and underbody protection.
For comfort and convenience, the package with a 10-way power driver’s seat, dual-zone climate control, heated front seats, LED cargo-bed lighting, a heated steering wheel, and remote start is a smart addition. The Safety package further enhances livability with blind-spot monitoring, rear cross-traffic alert, and front and rear parking sensors.
Under the hood, every Silverado 2500HD and 3500HD comes standard with a 6.6-liter gas V-8 producing 401 horsepower and 464 pound-feet of torque, paired with a six-speed automatic transmission.
The optional 6.6-liter Duramax diesel V-8 continues to deliver 445 horsepower and 910 pound-feet of torque and now mates with an Allison 10-speed automatic. Both engines can be paired with rear- or four-wheel drive, and buyers can opt for single or dual rear wheels.
Testing both powertrains in mountainous terrain while towing several tons revealed impressive capability across the board. The gas engine works harmoniously with the six-speed automatic to control speed on steep grades, but for those who tow heavy loads regularly, the Duramax diesel is the standout.
Its immense torque and smooth transmission responses inspire confidence, making demanding hauls less stressful. While the Silverado HD’s steering lacks precision and feedback, even with the electric-assist system, its ride quality remains surprisingly composed for such a powerful and capable truck.
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4. GMC Sierra 1500 with 3.0L Duramax I6
This half-ton diesel is part of a kaleidoscopic shift in what we expect from light-duty trucks. The 3.0L inline-six Duramax isn’t just efficient it’s quietly robust, delivering smooth torque that holds steady mile after mile.
While it may not pull fifth-wheel RVs with the same gusto as its heavy-duty cousins, it transcends expectations for long-distance haulers who prioritize refinement without sacrificing diesel economy or longevity.
5. Ford Transit with 2.0L EcoBlue Diesel
A surprising entry in this list, the Transit van with the 2.0L EcoBlue turbo diesel is perfect for logistics and delivery businesses that traverse thousands of miles weekly.
The engine may seem modest, but in the intricate labyrinth of stop-and-go urban routes and interstate travel, it remains unfazed.
Its compact, fuel-efficient layout is reimagined for American roads, making it a solid contender in the diesel endurance game.
Ford has introduced four trade-specific upfit packages for its cargo vans, available directly from the factory, catering to professionals who need tailored storage and organization. The Electrician Trade package comes equipped with drawers and bins for parts organization, as well as reels for hanging wire.
The HVAC Trade package offers bins and shelving along with racks and restraints specifically designed for refrigerant containers. For those needing a bit of both, the General Contractor package combines elements from the previous two packages. Meanwhile, the Foldable Shelving package targets delivery companies that need flexible storage solutions.
Another new feature is Smart Acceleration Truncation, an option aimed at fleet operators. This system adjusts acceleration based on the vehicle’s load to prevent aggressive starts—meaning your plumber won’t be drag racing to job sites. Notably, the Transit Trail is no longer part of the lineup.
The 2025 Ford Transit pricing starts at $49,495 and climbs to $60,295 depending on trim and configuration. The lineup includes the Transit Cargo Van at $49,495, the T-250 Cargo Van at $50,495, the recommended T-350 Cargo Van at $51,695, the T-350 Crew Van at $58,495, the XL also at $58,495, and the top-tier XLT at $60,295.
For the best value, the base-model Ford Transit T-150 Cargo Van stands out. It comes standard with 16-inch steel wheels, power-adjustable side-view mirrors, and split swing-out rear doors for easy access to cargo.
Inside, a four-way-adjustable driver’s seat and manually adjustable tilt-and-telescoping steering column help ensure driving comfort. Standard amenities include Bluetooth connectivity, dual USB ports, and air conditioning. Adding the optional blind-spot monitoring system enhances safety during lane changes, making it a worthwhile upgrade.
The 2025 Transit offers two powertrain options with either rear-wheel or all-wheel drive. The standard 3.5-liter naturally aspirated V-6 generates 275 horsepower and 262 pound-feet of torque, while the available 3.5-liter EcoBoost turbocharged V-6 delivers 310 horsepower and 400 pound-feet of torque.
Both engines pair with a 10-speed automatic transmission. The van’s suspension, though tuned for a commercial vehicle, provides a surprisingly compliant ride and decent handling.
These attributes don’t define a van’s success, but they certainly contribute to keeping drivers and passengers comfortable during long hauls. Performance-wise, the last Transit tested managed a 0–60 mph sprint in just 6.7 seconds, which is quick for a full-size van.
6. Chevrolet Colorado with 2.8L Duramax I4
Small but formidable, the Colorado diesel holds its own on long highway pulls, especially when trailering light boats, bikes, or camper trailers.
The 2.8L Duramax may not have the explosive torque of a V8, but its consistency, turbo efficiency, and cooling capacity make it ideal for those looking to embark on verdant cross-country journeys without worries. It offers a captivating blend of fuel savings and staying power.
Navigating the relentless traffic of the Los Angeles area, the Chevrolet Colorado proves to be the perfect balance of size and agility. It’s large enough to comfortably carry four adults, yet compact enough to squeeze through tight gaps in traffic or slip into parallel parking spaces with ease.
The Colorado also shines on the highway, offering a quiet, comfortable cabin and excellent visibility. When the pavement ends, the Colorado Z71 shows its off-road chops, confidently taking on rugged trails in places like Death Valley National Park and beyond.
Throughout all these experiences, the standout feature of the Colorado is its engine. The Duramax 2.8-liter turbodiesel I-4 produces just 181 horsepower, but its 369 lb-ft of torque gives this midsize Chevy truck a commanding presence on the road.
It accelerates with authority and never leaves you wishing for more power, although the six-speed automatic transmission occasionally hesitates to downshift quickly enough to fully tap into the Duramax’s torque-rich powerband. It also delivers a major fuel economy improvement, raising EPA estimates from 17/24/20 mpg city/highway/combined with the V-6 to 20/28/23 mpg for four-wheel-drive diesel models like the Colorado Z71.
The gains weren’t just on paper; they were clear in real-world use. Our previous long-term 2015 Colorado Z71 4×4, with the older 3.6-liter V-6 and six-speed automatic, averaged 19.5 mpg over 13 months and 31,069 miles. In contrast, our outgoing diesel Colorado averaged 23.2 mpg over 12 months and 28,158 miles, a 19 percent improvement.
It’s also notable that the last 8,127 miles with the diesel Colorado were driven without the aero-enhancing front air dam installed. During that time, the truck averaged 23.1 mpg. With the air dam attached for the preceding 20,031 miles, the average fuel economy was 23.3 mpg. As noted in an earlier update, the air dam’s real-world benefit appears to be minimal—at least on diesel-equipped models.
7. Mercedes-Benz Sprinter with 3.0L V6 Diesel
In the realm of commercial and vanlife adventurers, the Sprinter is a legend. Powered by a silky yet rugged 3.0L turbo-diesel V6, it cruises highways with unwavering poise.
Whether you’re a digital nomad hauling your entire home or a courier managing a complex delivery route, this diesel’s performance orchestrates a smooth rhythm that never stutters, even when fully loaded.
The 2020 Mercedes Sprinter lineup, including cargo, passenger, and crew vans, comes with three available engine options. The standard setup is a 188-horsepower turbocharged 2.0-liter four-cylinder paired with a nine-speed automatic transmission. While this might not seem like a lot of power for a vehicle of this size, it’s more than capable of handling lighter-duty tasks with ease.
For those needing diesel power, Mercedes provides two turbo-diesel choices: a 2.0-liter four-cylinder and a 3.0-liter V-6. The four-cylinder diesel delivers 166 horsepower and 266 pound-feet of torque, while the V-6 is rated at 188 horsepower and 325 pound-feet.
Both diesel engines are mated to a seven-speed automatic transmission, but only the six-cylinder version offers the advantage of four-wheel drive. This four-wheel-drive availability sets the Sprinter apart in its segment, though Ford counters with all-wheel-drive options on its Transit models.
8. Nissan Titan XD with 5.0L Cummins Diesel (Discontinued but Revered)
Though discontinued, the Titan XD with its 5.0L Cummins V8 deserves a lasting place in this diesel mosaic. Sitting between half-ton and heavy-duty segments, it was built for those who needed more without jumping into full-size truck behemoths.
Its enigmatic charm lies in its smooth torque delivery and durability many owners still report trouble-free highway towing deep into six-figure mileage territory.
When Nissan launched its second-generation Titan lineup in 2016, the XD led the charge, positioned as a truck that straddled the gap between traditional half-ton and three-quarter-ton pickups. Built with a near-heavy-duty frame and an available Cummins turbo-diesel V-8, it promised a unique blend of capability and everyday usability.
While gas-powered Titans later joined the lineup, the diesel-powered XD stood out as a bold experiment designed to handle commuting duties while managing moderate workloads. However, this niche truck comes with a paradox: despite its massive size and commanding presence on the road, its payload capacity of 2003 pounds and towing maximum of 12,037 pounds fall short of what some light-duty trucks can achieve.
Though the XD’s ride is stiff when unloaded, its control-arm front suspension and leaf-spring solid rear axle provide slightly more compliance than a full heavy-duty rig. For the 2016 crew-cab-only model, the midrange Pro-4X trim, with standard four-wheel drive and a six-foot, six-inch cargo box, proved to be a practical choice at $52,165.
At the track, the diesel XD’s performance was sluggish, taking 9.4 seconds to reach 60 mph after its 6000-mile break-in and completing the quarter-mile in 17.3 seconds at 82 mph. Over time, these figures improved slightly: by 40,000 miles, it managed 0–60 in 8.9 seconds and a 17.0-second quarter-mile, with stopping distances shrinking from 204 to 197 feet and skidpad grip improving from 0.66 g to 0.71.
Still, rivals from Ford, GM, and Ram produce over 900 pound-feet of torque, with some sprinting to 60 mph in under seven seconds. The Cummins V-8’s soundtrack didn’t help its case either.
These diesels represent more than machines; they are trusted partners in a lifestyle built around distance, weight, and time. From towing livestock across state lines to transporting precious victuals through a kaleidoscope of landscapes, each of these engines has been tested in the crucible of American roads. When you seek peace of mind on a long haul, these diesel options don’t just meet expectations they transcend them.
