Whats the most reliable Ram engine?

The most dependable Ram engine for everyday driving is the 5.7L Hemi V8, especially in recent Ram 1500 models with the mild-hybrid eTorque system. For serious towing and long-distance work, the 6.7L Cummins Turbo Diesel is the standout for durability and high mileage life. The following breakdown compares Ram’s current engines and what reliability looks like in light-duty versus heavy-duty trucks.

Ram engines in the light‑duty lineup

Below is a quick guide to the engines typically found in Ram 1500 and other light-duty Ram pickups, along with reliability considerations and maintenance notes.

• 3.6L Pentastar V6 — baseline gasoline engine known for smooth operation and solid reliability; simple design and widespread service history help keep ownership costs predictable.


• 5.7L Hemi V8 — traditional workhorse with strong long‑term durability; reliability is enhanced in modern Ram models by the available mild-hybrid eTorque system and regular maintenance.


• 3.0L EcoDiesel V6 — efficient turbo diesel with good torque; reliability is strong when the emissions system (DPF/DEF) is properly maintained, though diesel components can drive up repair costs if problems arise.


• 6.4L Hemi V8 — larger displacement option used in higher‑end and performance variants; renowned for rugged reliability under demanding use, with the trade‑off of higher fuel consumption.

Reliability snapshot for light‑duty Ram engines: gasoline V6 and V8 options offer proven durability and straightforward maintenance, while the EcoDiesel blends efficiency with more complex emissions hardware that requires attentive upkeep.

Key reliability notes by engine

In everyday Ram 1500 ownership, the 5.7L Hemi and the 3.6L Pentastar are the most commonly cited for dependable service lives, while the EcoDiesel delivers economy if maintenance is kept up and fuel/emissions systems are cared for. The 6.4L Hemi is typically reserved for buyers who need extra torque and towing capability and are prepared for higher operating costs.

Ram heavy-duty engines

For Ram 2500 and 3500 models, the powertrains emphasize durability and high-mileage capability. The following notes cover the main heavy‑duty options and their reliability profile.

• 6.7L Cummins Turbo Diesel I6 — widely regarded as the reliability benchmark in heavy‑duty pickups; known for longevity, strong torque, and long service intervals, with higher diesel ownership costs and fuel needs.

In the heavy‑duty segment, diesel engines like the Cummins typically deliver outstanding durability when maintained with regular oil changes, proper DEF management, and attention to fuel quality.

Diesel reliability lessons for Ram 2500/3500

Diesel powertrains tend to outlive gasoline counterparts in commercial use, but they require strict adherence to maintenance schedules, clean fuel, and proactive emissions system care. Regular oil changes, radiator and cooling system checks, and DEF monitoring are key to keeping the Cummins running reliably over many miles.

Maintenance practices to maximize Ram engine reliability

Beyond choosing an engine, consistent maintenance is the biggest driver of long-term reliability. The following practices apply across Ram engines.

• Follow the manufacturer’s service schedule for oil changes, filter replacements, and coolant/DEF servicing where applicable.


• Use the recommended oil grade and adhere to the specified change intervals; diesel engines may require higher-spec oils and more frequent fluid checks.


• Address recalls and service notices promptly; keeping service records helps preserve reliability and resale value.


• Maintain the cooling system, turbochargers, and intercoolers (for turbocharged and diesel engines) to prevent overheating and related damage.


• Watch for unusual noises, smoke, or warning codes and address issues early to avoid escalating repairs.

These steps help maximize reliability across Ram engines, regardless of displacement or fuel type.

Summary

Across Ram’s current lineup, the 5.7L Hemi V8 is commonly regarded as the most reliable option for light‑duty pickups due to its long service history and straightforward design, especially with proper maintenance. For heavy‑duty work, the 6.7L Cummins Turbo Diesel is the durability benchmark, delivering exceptional longevity and torque when well maintained. The 3.0L EcoDiesel offers impressive fuel economy but requires diligent care of emissions systems. Ultimately, the best engine depends on your needs—daily driving, towing, payload, and total cost of ownership—and consistency in maintenance is the most reliable factor of all.

What year 5.7 hemi to avoid?

You should be wary of the 2003, 2004, 2005, and 2006 Hemi engines, especially in the Dodge Ram and other LX-platform cars, as they were prone to issues like exhaust manifold bolts, engine stalling, and electrical problems. The 2011 and 2012 model years, particularly the 2012 Ram, are also considered problematic and should be avoided due to significant Hemi tick from lifter failure and other transmission issues. 
Years to avoid

• 2003: Prone to transmission failure and engine problems, including issues with exhaust manifold bolts. 
• 2004: Experienced continued engine stalling and power train concerns, which led to crashes and fires. 
• 2005 and 2006: Especially in LX-platform cars like the Magnum, these years had significant issues with stalling after refueling, along with other electrical and engine problems. 
• 2011 and 2012: The 2012 model is particularly notorious for the Hemi tick (lifter failure), and both years had issues with their transmissions and other engine components. 

Common problems across multiple years

• Exhaust manifold bolts: Many years had weak or brittle exhaust manifold bolts that would break, causing exhaust leaks and a ticking sound. 
• Hemi tick: A loud ticking sound that can be caused by exhaust leaks or, more seriously, failing lifters. The issue was more common in pre-2022 models due to lower oil pressure during idling. 
• Transmission failures: Some years, particularly the 2003 and certain Ram 1500 models in 2012, 2013, and 2015, had documented transmission issues that could lead to costly repairs or replacement. 
• Electrical problems: Several years, including 2003, 2014, and 2015, were prone to electrical issues that affected everything from the dashboard to steering. 

Which RAM engine is most reliable?

The most reliable Ram engine is often considered to be the 5.7L HEMI V8 for its proven long-term performance and longevity, with many models exceeding 200,000 miles with proper maintenance. Other reliable options include the 3.6L Pentastar V6, which is sufficient for many daily tasks and is also very durable, and the 3.0L EcoDiesel for its fuel efficiency and torque when towing, though some earlier models had some issues that have been addressed in newer versions. The newer 3.0L Hurricane inline-6 is a newer engine, so its long-term reliability is still being established. 
Reliable Ram engines

• 5.7L HEMI V8:
  • Pros: A legendary engine known for its dependability and high mileage potential. It has a proven track record and is more straightforward to work on compared to some of the newer, more complex engines. 
  • Cons: Less fuel-efficient than the V6 or EcoDiesel. 
• 3.6L Pentastar V6:
  • Pros: A very reliable and durable engine for everyday use. It's a great choice for city driving and is sufficient for lighter loads. 
  • Cons: Lacks the power of the HEMI V8 for heavy towing. 
• 3.0L EcoDiesel:
  • Pros: Offers excellent fuel economy and strong low-end torque, making it a great option for towing and highway cruising. 
  • Cons: Earlier models had some reported issues with crankshaft bearings, but these have been addressed in newer iterations. The system is more complex than a gasoline engine, which can increase maintenance costs. 
• 3.0L Hurricane Inline-6:
  • Pros: This is the newest engine option for Ram, with some reports suggesting it may become the most reliable engine due to its design. 
  • Cons: As a new engine, its long-term reliability is still being proven. There may be initial issues and a learning curve for technicians to adapt to its complexity. 

Other considerations

• Maintenance: All engines require regular maintenance to ensure their longevity. 
• Towing and payload: The best engine choice depends on your specific needs, especially when it comes to towing and payload. 
• Complexity: Newer engines, such as the Hurricane, are more complex, which can lead to longer repair times and a higher risk of issues until technicians become more familiar with them. 

Which RAM to stay away from?

5 RAM 1500 Years To Avoid
If you're looking for reliable trucks, steer clear of the 2003 Dodge RAM 1500, as well as the 2014, 2015, 2016, and 2019 RAM 1500. These models are plagued by problems in critical components, like engines, steering, braking, airbags, electrical systems, and fuel systems.

Is the 3.0 L hurricane better than the 5.7 Hemi?

The 3.0L Hurricane engine generally offers more horsepower and torque than the 5.7L HEMI, provides better fuel economy, and has a smoother, more modern power delivery, while the 5.7L HEMI offers a traditional V8 exhaust note and slightly higher maximum towing capacity. The Hurricane is a modern, twin-turbocharged inline-six designed for efficiency and power, while the HEMI is a naturally aspirated V8 known for its traditional rumble. 
You can watch this video to compare the driving experience of both engines: 51sCTech-reviewYouTube · Mar 1, 2025
Performance and power

• Horsepower: The standard 3.0L Hurricane makes 420 hp, compared to the 5.7L HEMI's 395 hp. 
• Torque: The Hurricane produces 469 lb-ft of torque, more than the HEMI's 410 lb-ft. 
• Acceleration: The Hurricane accelerates more quickly, with a 0-60 mph time around 5 seconds compared to the HEMI's 6 seconds. 

This video demonstrates the difference in acceleration between the two engines: 54sCTech-reviewYouTube · Oct 30, 2025
Fuel economy

• The 3.0L Hurricane is more fuel-efficient, with an estimated 18 mpg city / 24 mpg highway for the standard output version. 
• The 5.7L HEMI with eTorque is rated around 18 mpg city / 23 mpg highway. 

Towing and payload

• Towing: The 5.7L HEMI has a slightly higher maximum tow rating (up to 12,750 pounds) than the Hurricane (up to 11,550 pounds).
• Payload: The HEMI can also haul slightly more, but the Hurricane is still capable for most normal hauling needs. 

Driving experience

• Sound: The HEMI has a characteristic and more aggressive V8 exhaust note, while the Hurricane is noticeably quieter. 
• Power delivery: The Hurricane feels responsive with strong torque at lower RPMs, while the HEMI has a more traditional V8 power delivery, though some feel the Hurricane's overall delivery is an upgrade. 

This video compares the engine sounds of both options: 37sBen HardyYouTube · Sep 21, 2025
Which is right for you?

• Choose the 3.0L Hurricane if you prioritize more power, quicker acceleration, better fuel economy, and a modern driving experience. 
• Choose the 5.7L HEMI if you want the classic V8 rumble, a slightly higher maximum towing capacity, and a traditional engine feel.