2021 RAM 3500 Reliability ReportCommon Problems, Repair Costs & Expert Verdict
Quick Facts · 2021 RAM 3500
- Has 9 NHTSA recalls on record — the most notable involves the electrical system:wiring:relays/solenoids.
- Scores 10 points below the strongest nearby year — the 2022 RAM 3500 earns a 88.
- The system most likely to surface first: cummins cp4 fuel system (critical severity).
Should You Buy the 2021 RAM 3500?
The 2021 RAM 3500 is a formidable heavy-duty truck, offering immense capability and comfort, but it comes with a critical Achilles' heel in the form of its Cummins CP4 fuel pump on diesel models. While the Hemi V8 offers better engine reliability, all models demand diligent maintenance to mitigate common heavy-duty wear items and electronic gremlins. Proceed with caution and a thorough pre-purchase inspection, particularly on diesel variants, to avoid potentially catastrophic repair bills.
Biggest Strengths
- Exceptional towing and hauling capacity
- Robust frame and drivetrain (excluding CP4 pump)
- Premium interior comfort and technology
Top Risk Areas
The systems that break first on the 2021 RAM 3500. Mileage windows, repair costs, and fix-before-you-buy notes are in the full report.
NHTSA Recalls
9 recalls on record from NHTSA. Check your VIN atnhtsa.gov to see if the repair was performed.
ELECTRICAL SYSTEM:WIRING:RELAYS/SOLENOIDS
Chrysler (FCA US, LLC) is recalling certain 2021-2022 Ram 3500, 2500 pickup trucks, and Ram 3500, 4500, and 5500 cab chassis vehicles equipped with Cummins 6.7L Turbo Diesel engines. An electrical short in the relay may cause a vehicle fire with the ignition on or off.
AIR BAGS:SIDE/WINDOW:CURTAIN
Chrysler (FCA US, LLC) is recalling certain 2021-2022 Ram 2500, Ram 3500, and 2021 Ram 1500 Classic pickup trucks. The side air bag inflatable curtain (SABIC) assemblies may have been manufactured with the incorrect amount of compressed gas, which can result in an improper air bag deployment.
What breaks on the 2021 RAM 3500?
Full reliability breakdown — engine, transmission, rust, electrical. With repair costs and mileage danger zones.
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RAM 3500 by Year
Compare KeepScores across nearby years of the RAM 3500. Click any year for its full report.
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Frequently Asked Questions
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