What is the most reliable heavy-duty truck? For this 2026 update, Pickup Truck + SUV Talk ranked the current Ford Super Duty, Chevrolet Silverado HD, GMC Sierra HD and Ram HD using our reliability reporting, National Highway Traffic Safety Administration recalls, technical service bulletins and owner complaints.
Consumer Reports and J.D. Power are included for comparison, but neither determined our final order.
Our conclusion: The Ford Super Duty has the strongest overall reliability case, the mechanically related Chevrolet Silverado HD and GMC Sierra HD tie for second, and the recently redesigned Ram HD finishes last because it presents the most unanswered long-term powertrain questions.
How PUTT ranked the most reliable HD trucks
Reliability is especially difficult to measure in heavy-duty trucks. Some are lightly driven personal vehicles. Others tow at or near their limits, idle for hours or cover tens of thousands of miles annually.
NHTSA complaints help identify repeated failures and safety problems, but they are not failure rates. Sales volume, truck usage and an owner’s willingness to file a complaint can all distort the totals. Recalls also require context. A software recall affecting a million vehicles does not necessarily create the same ownership risk as a smaller campaign involving engine damage or complete transmission replacement.
Consumer Reports provides useful model-year trends, but its sample may not isolate the engine, transmission, load and duty cycle of each HD truck. J.D. Power uses verified-owner responses, but much of its published consumer information focuses on problems experienced early in ownership.
Our ranking gives the most weight to:
- PUTT reporting on recurring failures, owner experiences and technical evidence
- NHTSA recalls, investigations and complaints
- Failure severity, downtime and potential repair cost
- Problems that continue across multiple model years
- Consumer Reports and J.D. Power findings as comparisons
For an HD owner, a frozen screen is frustrating. A transmission replacement, disabled trailer brakes, fuel-system contamination or engine failure can take a work truck out of service and cost thousands of dollars.
1. Ford Super Duty
The Ford Super Duty ranks first, but its victory comes with substantial qualifications.
Our 2023-2026 Ford Super Duty known-problems investigation found continued reports of steering oscillation commonly called “death wobble.” Ford redesigned the suspension for the current generation, and reports of the problem appear less common than in earlier trucks, but the problem has not disappeared.
Ford also recalled certain Super Duty trucks over improperly heat-treated rear axle shafts that could fracture, causing a loss of power and preventing the truck from remaining stationary in park. Other campaigns addressed fuel-pump failures on certain gasoline trucks, rearview cameras, airbags, wipers and an integrated trailer module that could disable trailer lighting and, on some trucks, trailer brakes.
Those are serious concerns for a truck frequently used for towing. However, PUTT has not found one widespread current-generation engine or transmission failure pattern that defines the entire Super Duty lineup.
Ford offers 6.8- and 7.3-liter gasoline V8s plus standard- and high-output versions of its 6.7-liter Power Stroke diesel. All use 10-speed automatic transmissions. Our examination of 6.7-liter Power Stroke problems found the third-generation engine, especially 2023 and newer versions, to be the most reliable iteration so far. The Bosch CP4.2 injection pump remains a potentially catastrophic weakness, but its failure rate appears low and many of the engine’s earlier turbocharger and emissions-system problems were addressed through years of development.
The outside sources split. Consumer Reports places the F-250 below the Ram and Silverado HD in its latest order, although its history shows meaningful improvement for 2025. J.D. Power is more favorable, giving the 2025 F-350 an 86 out of 100 Quality and Reliability rating and ranking it first among the large HD pickups for which it publishes ratings.
Why it ranks first: Ford has too many recalls, and death wobble remains a troubling owner complaint. Still, its current engines and 10-speed transmission present fewer unanswered catastrophic failure questions than the alternatives.
2 and 3. Chevrolet Silverado HD and GMC Sierra HD
We rank the Chevrolet Silverado HD and GMC Sierra HD together because they share the same engines, transmissions and underlying engineering. Survey differences between the two brands do not outweigh their common mechanical risks.
Both trucks offer a 6.6-liter gasoline V8 and a 6.6-liter Duramax diesel. Since the 2024 refresh, both engines have used Allison-branded 10-speed automatic transmissions.
The Duramax remains one of the most proven diesel choices in the class, and PUTT has not uncovered a widespread current-generation engine crisis. The greater concern is the transmission.
Our 2024-2026 Silverado HD investigation found reports of valve-body failures, harsh shifting, “Service Transmission” warnings and complete transmission replacements. Certain 2024 trucks were built with an incorrect bearing in the transmission’s direct overdrive carrier. GM’s customer satisfaction program calls for replacing the complete transmission, although this is not an NHTSA safety recall.
Those newer concerns are separate from NHTSA recall 24V-797 involving diesel-powered 2020-2022 Silverado and Sierra HD trucks. Wear in a transmission control valve could produce harsh shifting and, in rare cases, cause the rear wheels to lock momentarily. A later recall covered trucks that may not have received the correct software during the first repair.
Our 2020-2026 GMC Sierra 2500 HD reporting also identified DEF and emissions-system faults, coolant leaks, fuel-system contamination risks, battery drain and no-start complaints. Other GM recalls have addressed tailgates opening unexpectedly, airbags, steering components, brake controls and seat belts.
Consumer Reports separates the two trucks and shows the Silverado improving to the top of its latest HD ranking while the Sierra remains last. That difference is difficult to reconcile with their shared hardware. J.D. Power also separates them, giving the 2025 Silverado HD an 84 out of 100 Quality and Reliability rating and the Sierra HD an 82.
Why they tie for second: The Duramax and gas V8 are compelling, mature engines, but valve-body failures and complete transmission replacements create too much financial and downtime risk to place the GM trucks above Ford.
4. Ram HD
The Ram 2500 and 3500 finish last because the new powertrain has the least long-term evidence, while the outgoing combination accumulated several serious failures.
Our 2019-2026 Ram 2500 known-problems investigation found Bosch CP4 high-pressure fuel-pump failures on certain 2019-2020 Cummins trucks. A failed pump could contaminate the fuel system with metal and stall the engine. Ram also recalled certain 2020-2023 diesel trucks because pressure in the 68RFE automatic could push fluid from the dipstick tube onto hot engine components, creating a fire risk.
The 2025 redesign replaced the standard- and high-output Cummins choices with one high-output 6.7-liter diesel and replaced the six-speed automatics with a TorqueFlite HD eight-speed. It is a promising combination, but it does not yet have the high-mileage record of the Power Stroke, Duramax or outgoing Cummins powertrains.
Early 2025 Cummins engines were recalled because improperly seated valvetrain components could create excessive lash and potentially cause engine damage. Owners have also reported software faults that can limit the truck to approximately 15 mph, disable Tow/Haul mode or blank the digital instrument cluster.
PUTT also examined three failed fifth-generation Cummins engines. The teardowns showed repeated valvetrain wear involving roller lifters, rocker assemblies and pushrods. Three engines cannot establish a fleet-wide failure rate, and no recall addresses the alleged design weakness, but the repeated wear pattern deserves attention because it potentially applies to 2019 and newer Cummins engines.
There are reasons for optimism. The 6.4-liter Hemi V8 and eight-speed automatic remain available. Ram’s Consumer Reports history improved for 2025, although there was insufficient information to assess the redesigned diesel powertrain. Ram also offers a 10-year, 100,000-mile limited powertrain warranty on eligible 2026 trucks.
J.D. Power does not currently include the Ram 2500 in its published 2025 large HD pickup ranking, making direct comparison with Ford and GM difficult.
Why it ranks fourth: The old diesel combination carried CP4 and 68RFE concerns. The replacement Cummins and eight-speed may prove excellent, but the early valvetrain recall, software problems and limited high-mileage evidence create the most uncertainty in this group.
What is the most reliable heavy-duty truck you should buy?
The Ford Super Duty is PUTT’s most reliable current heavy-duty truck because its latest powertrains have the strongest combination of maturity, variety and real-world history. Its recalls and steering complaints prevent an easy recommendation, but we found no dominant current engine or transmission crisis.
The Chevrolet Silverado HD and GMC Sierra HD tie for second. Their engines are proven, but transmission failures and replacements carry too much potential cost and downtime to ignore.
The Ram HD finishes last for now. This is not a prediction that the redesigned Cummins and TorqueFlite HD eight-speed will fail. It means the combination has the least long-term evidence and arrived with enough early concerns to require caution.
No ranking can predict the future of one truck, especially when usage varies so widely. Before buying, check the VIN for recalls, research the exact engine and transmission, review maintenance records and arrange a pre-purchase inspection. For a diesel truck, fuel quality, emissions-system maintenance, idle time and towing history can matter as much as the badge.
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