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How many miles will a 2012 Dodge Ram last?

Typically, a well-maintained 2012 Ram can reach around 200,000 miles on gasoline models, while diesel-equipped Ram 2500/3500 trucks with the 6.7L Cummins commonly push past 300,000 miles, with many owners reporting 500,000 miles or more in long-running applications.


Model variants and longevity expectations


In 2012, the Ram lineup included the Ram 1500 (half-ton) with gasoline engines and the Ram 2500/3500 heavy-duty models that offered diesel propulsion. Longevity varies significantly between these configurations due to engine design, usage patterns, and maintenance history.


Gasoline Rams vs diesel durability


Gasoline Ram 1500 models equipped with the 5.7L Hemi or other small-block engines can typically reach the mid-to-high 200,000s of miles with careful maintenance, and many still run beyond 250,000 miles. Heavy-duty Ram 2500/3500 models with the 6.7L Cummins diesel are widely noted for longer lifespans, with many trucks in the 300,000–500,000 mile range and some exceeding 600,000 miles when properly cared for.


Below is a breakdown of typical mileage ranges reported by owners, depending on engine and model. Actual results vary based on maintenance, terrain, and driving habits.



  • Ram 1500 (gasoline, 5.7L Hemi or other V8 options): commonly 180,000–250,000 miles; exceptional care can push beyond 300,000 miles.

  • Ram 1500 (gasoline, older V8 options): generally similar to the 5.7L, with a broad 170,000–250,000 mile range and potential for more with meticulous upkeep.

  • Ram 2500/3500 (6.7L Cummins diesel): typically 300,000–500,000 miles, with many examples reported well into the 400,000s and some surpassing 500,000 miles under disciplined maintenance.


In practice, the difference comes down to how the vehicle was used and cared for. Regular service, timely repairs, and rust prevention are strong predictors of long life.


Maintenance habits that extend life


Keeping a 2012 Ram on the road for many miles hinges on disciplined maintenance, proactive care, and avoiding extreme wear. Below are the core practices most strongly associated with longer runtimes.



  • Adhere to the factory maintenance schedule and use quality fluids; change oil at recommended intervals or sooner if towing or severe conditions apply.

  • Keep the cooling system in good shape—radiator, hoses, thermostat, and coolant condition—to prevent overheating, which can shorten engine life.

  • Inspect and address wear items proactively: brakes, suspension components, and drivetrain fluids to minimize cascading failures.

  • Prevent rust and underbody corrosion with cleaning, protective coatings, and prompt attention to salt-prone areas.

  • Be mindful of towing and load history; excessive or improper towing can increase wear on engines, transmissions, and axles if not properly maintained.


Effective maintenance drives longevity in both gasoline and diesel Rams, helping older trucks keep performing as miles climb.


Real-world factors that influence longevity


Beyond routine service, several real-world factors shape how far a 2012 Ram will go. Owners and technicians point to these influences when estimating possible mileages.



  1. Climate and road conditions—exposure to road salt, humidity, and extreme temperatures can accelerate corrosion and wear.

  2. Driving style and duty cycle—regular highway cruising tends to be gentler on engines and transmissions than frequent heavy towing or stop-and-go city driving.

  3. Maintenance history—vehicles with complete service records and timely part replacements typically outlive those with gaps or deferred repairs.

  4. Aftermarket modifications—engine tuning, exhaust upgrades, or heavy suspension changes can affect long-term reliability if not properly matched to components.

  5. Previous accidents or major repairs—structural or powertrain repairs can impact longevity, depending on quality of workmanship.


Ultimately, a 2012 Ram’s lifespan is a product of its configuration, how it was driven, and how well it was cared for over its life. The diesel-heavy models tend to offer the strongest odds of higher mileage when maintained rigorously.


Summary


For the 2012 Dodge Ram lineup, gasoline Ram 1500s typically reach 180,000–250,000 miles under normal, well-maintained use, with some pushing past 300,000. Diesel-powered Ram 2500/3500 trucks with the 6.7L Cummins commonly achieve 300,000–500,000 miles, with anecdotes of 600,000+ among exceptionally cared-for examples. Regular maintenance, rust prevention, and prudent towing practices are the most reliable predictors of long life. Context matters: model type, maintenance history, and driving patterns all shape the ultimate mileage ceiling.

What is the life expectancy of a 2012 Ram 1500 transmission?


Multiple factors can increase or decrease a Ram 1500 transmission's lifespan. It typically depends on how well you maintain it, your driving habits, and the environment in which you typically operate it. On average, a well-maintained Ram 1500 will last at least 200,000 miles or 15 years.



Is 2012 a good year for Ram 1500?


Yes, 2012 is considered a good year for the Dodge Ram 1500, receiving high marks for its smooth ride, comfortable interior, and powerful engine options, especially the 5.7L Hemi V8. However, some owners report issues with paint and trim, along with some noises and leaks.
 
Pros

  • Ride and handling: The rear coil spring suspension provides a more comfortable and smoother ride than competitors with traditional leaf springs. 
  • Engine performance: The 5.7L Hemi V8 engine is powerful and has good acceleration. The 5.7L engine also features a multi-displacement system to improve fuel efficiency on the highway. 
  • Interior comfort: The cabin is noted for being quiet and well-appointed, with generous space, particularly in the Crew Cab model. 
  • High owner satisfaction: Many owners, including those switching from other brands, report being very satisfied with their 2012 Ram 1500. 
  • Resale value: The 2012 model received a "Best" rating for resale value from J.D. Power. 

Cons
  • Quality concerns: Some owners report issues with the paint (fading, peeling) and trim. 
  • Noises and leaks: There are owner complaints about squeaks, rattles, and wind noise. 
  • Potential transmission issues: Some reports mention a jerking transmission and noise when accelerating or decelerating. 
  • Towing capacity: Maximum towing capacity is good but slightly less than some competitors, and can be significantly reduced by choosing 20-inch wheels. 



What is considered high miles for a Ram 1500?


For a gas-powered Ram 1500, high mileage often begins around 100,000 miles, as components like the suspension and brakes may start to show wear, though they can easily last much longer with proper maintenance. For diesel models, "high mileage" is significantly higher, starting around 200,000 miles due to the engines' greater durability. 
Factors that influence what's considered high mileage

  • Engine type:
    • Gasoline: While 100,000 miles is a common threshold for high mileage, these trucks can reach 250,000 to 300,000 miles or more with consistent maintenance. 
    • Diesel: High mileage for a diesel Ram 1500 starts much higher, often around 200,000 miles, and these engines are known to last well over 400,000 miles. 
  • Maintenance: A truck with a strong maintenance history will handle high mileage better than one that has been neglected. 
  • Driving conditions: Highway miles are less taxing than stop-and-go city driving or heavy towing, which can increase wear and tear. 



How many miles will a 2012 Dodge Ram 1500 last?


A 2012 Ram 1500's life expectancy depends heavily on maintenance, with many owners reporting reaching over 200,000 miles. With proper care, the 5.7L Hemi V8 can exceed 300,000 miles, while the 3.6L Pentastar V6 often lasts over 250,000 miles. Common issues to be aware of include potential cam and lifter failure in Hemi engines around 100,000 to 150,000 miles, and general wear on suspension and drivetrain components over time.
 
Factors affecting longevity

  • Maintenance: Regular oil changes, filter replacements, and fluid flushes are crucial for engine and transmission health. 
  • Driving habits: Aggressive driving, hard braking, and constant speeding will accelerate wear and tear on components, while gentle driving and reasonable speeds will extend their life. 
  • Usage: Trucks used for light commuting and hauling will generally last longer than those consistently used for heavy-duty tasks like towing large loads or construction work. 
  • Environment: Driving in harsh climates with road salt or extreme temperatures can lead to more wear and tear. 

Common issues to watch for
  • Cam and lifter failure: The 5.7L Hemi engine can be prone to cam and lifter wear, often becoming a concern around 100,000-150,000 miles, note MotorBiscuit and Facebook users.
  • Power steering rack: Some owners have reported this component failing around 190,000 miles, according to Facebook users.
  • Drivetrain and suspension: As with any older truck, expect suspension components and the drivetrain to wear out over time. Regular inspections can help catch these issues early. 


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.