2018 RAM 2500 Reliability ReportKeepScore 78/100 · top failure points · buy or avoid
Quick Facts · 2018 RAM 2500
- Scores 5 points below the strongest nearby year — the 2020 RAM 2500 earns a 83.
- The system most likely to surface first: diesel emissions system (cummins) (major severity).
- Has 10 NHTSA recalls on record — the most notable involves the steering:linkages.
2018 RAM 2500: Buy or Avoid?
The 2018 Ram 2500 is a robust heavy-duty truck, offering immense capability and power that makes it a workhorse for demanding tasks. However, it's not without its specific weaknesses, particularly concerning the complex emissions systems on diesel models and some wear points in its front-end components. Savvy buyers will find a strong partner, but only if they are prepared for diligent maintenance and potential specialized repairs.
The 2018 Ram 2500 is an incredibly capable truck that delivers on its promises of power and comfort for heavy-duty work. However, buyers must approach the diesel variants with a clear understanding of the substantial risks and costs associated with its emissions system, and all models require vigilant attention to f…
Best Model Years
2019+ (newer generations saw some improvements in technology and refinement, though emissions systems remain complex for diesels)
Years to Avoid
None outright to avoid, but models without comprehensive service records or evidence of previous front-end repairs should be approached with extreme skepticism.
Biggest Strengths
- Exceptional towing and hauling capability
- Durable Cummins diesel (core engine) and Hemi gas powertrains
- Comfortable interior for a heavy-duty truck
2018 RAM 2500 — Known Trouble Spots
The systems that tend to fail first on the 2018 RAM 2500, with the typical mileage window when each becomes a concern. Detailed repair-cost ranges and exact what-to-check inspection notes are in the full report.
The Diesel Particulate Filter (DPF), Exhaust Gas Recirculation (EGR) valve/cooler, and Selective Catalytic Reduction (SCR)/DEF system are prone to clogging, sensor failures, and fluid contamination, leading to costly repairs and 'limp mo…
Ball joints, tie rods, drag links, and track bar components wear out prematurely, especially on trucks that frequently tow, haul heavy loads, or have aftermarket lifts/larger tires. This can lead to loose steering, premature tire wear, a…
The Uconnect system can experience freezing, slow responses, and connectivity issues. Other electrical concerns include trailer wiring shorts, battery drain, and occasional sensor failures related to ABS or drivetrain. Recalls have addre…
2018 RAM 2500 Mileage Danger Zones
The mileage windows when the 2018 RAM 2500 most commonly needs attention. Plan ahead, budget accordingly, and inspect before you cross each threshold.
Low Risk Zone
At this mileage, the truck is still relatively new. Focus on routine fluid changes (oil, filters) and monitoring for any early electrical glitches or unusual noises from the suspension.
Maintenance Zone
This mileage often marks the onset of more significant wear. Pay close attention to tire wear, brake condition, and the overall tightness of the front suspension and steering components. Diesel emissions system issues may begin to surfac…
Elevated Risk Zone
Major service items typically come due around this mileage. Expect to address front suspension components, potentially transmission fluid changes (if not already done), and increased vigilance on the diesel emissions systems, which are m…
High Risk Zone
Beyond this point, you're entering the territory where major component failures become more likely. Maintenance records are paramount. Expect to budget for more extensive repairs, potentially including turbocharger issues on diesels, mor…
2018 RAM 2500 Ownership Cost Outlook
What it typically costs to keep the 2018 RAM 2500 on the road. Full 5-year cost-of-ownership projection and major-failure-risk forecast are in the report.
Annual Maintenance
$600-1,000 (gas), $800-1,500 (diesel)
Moderate Repairs
$500-2,500 occasionally (e.g., front end work, minor electrical issues)
How Long Does the 2018 RAM 2500 Last?
For gas models, well-maintained examples can easily reach 200,000 miles. Diesel models with a robust maintenance history and regular highway use can exceed 300,000 miles, but expect significant emissions system investment around 100,000-150,000 miles.
What 2018 RAM 2500 Owners Actually Say
What Owners Love
- Exceptional towing and hauling capacity, rarely feeling underpowered.
- Comfortable and spacious interior, making long trips more bearable.
- Powerful engine options (both Hemi and Cummins provide strong performance).
- Smooth ride quality for a heavy-duty truck, especially with rear coil springs.
Common Frustrations
- Poor fuel economy, especially with the Hemi or when towing heavily with the Cummins.
- High cost and complexity of diesel emissions system repairs.
- Frequent front suspension/steering component replacements are costly and annoying.
- Uconnect infotainment system can be frustratingly slow or glitchy.
Who Should Buy the 2018 RAM 2500?
Best For
- Individuals who frequently tow heavy trailers (RVs, car haulers, livestock)
- Contractors or tradespeople requiring significant payload and durability
- Owners who regularly drive long distances and can allow diesel regeneration cycles
Not Ideal For
- Commuters or those primarily driving short distances (especially diesel models)
- Budget-conscious buyers unwilling to spend on specialized maintenance and repairs
How the 2018 RAM 2500 Compares to Rivals
The Ram 2500 excels in interior comfort and overall ride quality for a heavy-duty truck. While competitive in towing and powertrain, its diesel emissions system can be more troublesome than rivals, and front-end wear is a known and shared weakness across HD trucks.
More Reliable Than
- Older generation Ram HD models (in terms of interior comfort and technology)
Comparable To
- Chevrolet Silverado 2500HD (L5P Duramax is generally seen as more reliable on emissions than Cummins, but still complex)
- GMC Sierra 2500HD
Safety Recalls on the 2018 RAM 2500
10 recalls on record from NHTSA. Check your VIN atnhtsa.gov to see if the repair was performed.
STEERING:LINKAGES
Streetcar ORV LLC (Streetcar) is recalling certain American Expedition Vehicles (AEV) 3" Dualsport aftermarket suspension kits, part numbers N0436000 and N0436001, sold for installation on 2013-2018 RAM 2500 and 3500HD trucks. Improper installation and machining of the original equipment steering knuckle may weaken the joint between the steering drag link and knuckle.
LATCHES/LOCKS/LINKAGES:TAILGATE:LATCH
Chrysler (FCA US LLC) is recalling certain 2015-2017 Ram 1500, 2500 and 3500 pickup trucks equipped with an 8 foot bed and a power locking tailgate. Chrysler is also recalling all 2013-2014 and 2018 Ram 1500, 2500 and 3500 pickup trucks built before April 1, 2018 with a 6 or 8 foot bed and a power locking tailgate. On August 29, 2019 Chrysler expanded the recall to include an additional 693,128 model year 2013-2014 Ram 1500, 2500 and 3500 pickup trucks. The tailgate actuator limiter tab may fracture and cause the tailgate to unlatch and open while driving.
What breaks on the 2018 RAM 2500?
Full reliability breakdown — engine, transmission, rust, electrical. With repair costs and mileage danger zones.
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RAM 2500 — Year-by-Year Comparison
Compare KeepScores across nearby years of the RAM 2500. Click any year for its full report.
Competing 2018s Worth a Look
Similar class, similar year range — ranked by KeepScore.
Relevant Products for Your 2018 RAM 2500
Parts and accessories matched to your 2018 RAM 2500
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Frequently Asked Questions
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