10 Pickups With The Best Diesel Engines Ever Built

Few technologies in automotive history have proven as enduring as the diesel engine. What began as a laboratory experiment has evolved into the backbone of the working truck world — and today, diesel-powered pickups remain the go-to choice for anyone who needs to haul serious weight, cover serious miles, or do both at once. The compression-ignition principle that Rudolf Diesel patented in 1892 and demonstrated in a running prototype in 1897 still underpins every engine on this list, a testament to how fundamentally sound the idea was from the start. More than a century later, diesel engines continue to perform the biggest jobs, especially when it comes to hauling heavy loads.

2017-2022 Chevrolet Colorado/GMC Canyon

2.8-liter Duramax: Towing Capacity: 7,700 Pounds

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The small but mighty Duramax four-cylinder engine used by the Chevrolet Colorado and GMC Canyon midsize pickup trucks is one of the best diesel engines ever made. It delivers impressive fuel economy and the best towing capacity in the midsize truck segment, making it easy for the GM pair to outperform the competition.

Powertrain Specifications

Engine	Read Also 1 month ago Insanely Fast Cars That Have Depreciated Into Affordable Bargains 46 autotech 2.8-liter Duramax 4-cylinder
Transmission	6-speed automatic
Horsepower	181 hp
Torque	369 lb-ft
Payload Capacity	2,181 pounds
Towing Capacity	7,700 pounds

The strong low-end torque from this Duramax engine gives these midsize trucks a clear power advantage on the trails. This engine was also used in the Colorado ZR2, giving that off-road-focused truck the grunt to push through mud and rough terrain better than most gas-powered alternatives.

2019-2021 Chevrolet Silverado/GMC Sierra 1500

3.0-liter Duramax: Towing Capacity: 9,400 Pounds

Chevrolet

The Duramax diesel engine made its way to the half-ton versions of the Chevrolet Silverado 1500 and GMC Sierra 1500, giving this GM pair strong power and improved fuel mileage compared to traditional gas-powered V8 engines. The torque figures for the Duramax six-cylinder engine matched those of the 6.2-liter V8.

Powertrain Specifications

GM made this diesel engine more widely available than other automakers, allowing the Chevrolet Silverado 1500 to be equipped with this powertrain across the LT, RST, LTZ, and High Country trim levels. Adding the Convenience and Trailering packages makes it considerably easier to tow a heavy load with this engine under the hood.

1994-1998 Dodge Ram 2500/3500

5.9-Liter 12-Valve Cummins: Towing Capacity: 9,600 Pounds

Bring A Trailer

Cummins diesel engines are iconic, and part of the lore surrounding these engines comes from the 5.9-liter model found in the 1994–1998 Dodge Ram 2500/3500 HD trucks. This engine was upgraded from the previous generation with a fully mechanical inline injection pump — complex in design but extraordinarily reliable in practice.

Powertrain Specifications

The preferred transmission of the era was the five-speed manual, which ranks among the toughest and most reliable gearboxes ever built. It features a durable cast-iron case, a “granny-low” first gear for low-speed work, and an overdrive fifth gear to improve highway fuel economy in these heavy-duty Dodge Ram trucks.

2011-2023 Ram 1500

3.0-Liter Chrysler EcoDiesel: Towing Capacity: 9,600 Pounds

Ram

Diesel engines brought meaningful benefits to the half-ton segment. These lighter-duty trucks gained improved fuel mileage and strong low-end torque when equipped with a diesel engine. The Ram 1500 utilized a 3.0-liter unit built by VM Motori, a subsidiary of FCA at the time. This engine was offered across several vehicles, most notably the Ram 1500.

Powertrain Specifications

This impressive diesel engine earned a spot in Ward’s “Ten Best Engines” list from 2014 to 2016, recognized for its reliability, durability, and real-world performance. The EcoDiesel remains one of the most admired powertrains ever offered in a half-ton truck.

2023-Present Chevrolet Silverado/GMC Sierra 1500

3.0-liter Duramax: Towing Capacity: 13,300 Pounds

GMC

Where other automakers stepped away from diesel in the half-ton class, GM doubled down by upgrading the Duramax six-cylinder. This is the last remaining diesel powertrain in the half-ton pickup segment, making it something of a unicorn. Output was improved over the previous version through new fuel injectors and pistons, a retuned turbocharger compressor, and a redesigned combustion bowl.

Powertrain Specifications

One of the most surprising qualities of this upgraded diesel is how quietly it runs. Many drivers associate diesel powertrains with noise and vibration, but that’s simply not the case with this Duramax. The engine is available across multiple trims, and most notably powers the off-road-focused Chevrolet Silverado 1500 ZR2.

2003-2007 Dodge Ram 2500/3500

5.9-Liter, 24-Valve Cummins: Towing Capacity: 16,400 Pounds

Dodge Ram

This improved Cummins diesel engine represented a significant leap forward after the troubled models produced through 2002. It was one of the last emissions-free diesel powerplants of its era, and its ECM was tunable — allowing owners to extract even more power and transform a big Dodge Ram into a genuine performance hauler.

Powertrain Specifications

Beyond its power and dependability, this Cummins diesel was capable of consistent fuel economy figures above 20 mpg. It’s common to find one of these trucks still covering miles well past the 200,000-mile mark without major issues, provided it has been properly maintained.

2006-2007 Chevrolet Silverado/GMC Sierra

6.6-Liter Duramax LBZ: Towing Capacity: 16,500 Pounds

Mecum

The Duramax LBZ is one of the most sought-after diesel engines among GM enthusiasts. Its appeal stems largely from an ECM that responds well to tuning, making it a favorite in the performance diesel community. The LBZ improved on the LB7 with more power and greater capability for heavy loads. Like its predecessor, the LBZ can achieve more than 20 mpg on the highway.

Powertrain Specifications

Older diesel engines like these Duramax units weren’t subject to the same emissions regulations as modern powertrains, which made them more attractive to certain buyers. This engine is exceptionally reliable, making it easy to keep a heavy-duty Chevrolet or GMC on the road for many years without incurring major repair costs.

2001-2004 Chevrolet Silverado/GMC Sierra 2500/3500

6.6-Liter Duramax LB7: Towing Capacity: 16,700 Pounds

Bring A Trailer

The substantial power from this V8 diesel engine was made even more impressive by its fuel economy. Despite there being no regulatory requirement to publish fuel economy figures for trucks of this class, this diesel engine routinely delivered more than 20 mpg, earning its reputation as one of the most efficient V8 diesel engines ever built.

Powertrain Specifications

Alongside the power and capability of this Duramax engine, GM introduced an independent front suspension on these heavy-duty Chevrolet and GMC trucks. The result was a noticeably smoother ride, which matters when you’re towing long distances. Rounding out the package was the Allison 1000 transmission, widely regarded as the best gearbox available in this class at the time.

1999-2003 Ford F-250/F-350 Super Duty

7.3-Liter Power Stroke: Towing Capacity: 21,500 Pounds

Ford

The Ford Super Duty trucks of this era drew their legendary reputation from one of the largest and most capable diesel engines of the time. From 1999 to 2003, this big engine gave owners a truck they could count on for the toughest jobs. It is a straightforward, low-maintenance powerplant with ample power and a well-earned cult following.

Powertrain Specifications

Complementing the powerful engine, the Power Stroke setup in these Ford trucks was paired with two transmissions that are rock solid. Both are reliable and dependable for hundreds of thousands of miles, which explains why so many of this Super Duty generation are still working hard on the road today.

2011-Present Ford F-250/F-350 Super Duty

6.7-Liter Power Stroke: Towing Capacity: 40,000 Pounds

Ford

Ford’s Power Stroke engine has been continuously refined over the years, gaining a more capable turbocharger and steadily increasing power output. In production since 2011, the 6.7-liter version has only improved with each iteration. Today, this engine can generate enough power to pull the heaviest loads of any pickup on the market, cementing its status as the class leader.

Powertrain Specifications

Over its long production run, the 6.7-liter Power Stroke has seen meaningful engineering improvements. Early versions used ceramic ball bearings in the turbocharger that were prone to failure; those were replaced with a more durable design. A six-bolt-per-cylinder head pattern was also added, significantly reducing the risk of head gasket failure. Today’s versions are among the most durable and powerful diesel truck engines available, and are well capable of covering hundreds of thousands of miles.

Sources: OEMs