Mack Mru warranty claim denied?

If your Mack Mru warranty claim was just denied, you're not alone, and the denial may not be the final word. Federal records show that for the Mru (model years 2007–2018), the manufacturer has filed 455 communications with NHTSA, including 3 formal warranty extensions covering components like the Fuel Control Module and Pre-SCR NOx Sensor (Owner Notification Letters U111, U112, and U113, issued 2023-09-28). Other documented service bulletins describe recurring issues such as oil leaks from the clutch/flywheel housing, common rail fuel system electrical faults, Bendix VCP fault codes, and engine oil analysis specification concerns.

These public filings matter because they show the manufacturer was already aware of certain defects — sometimes before, during, or after an individual's claim was denied. A denial doesn't always mean the issue falls outside coverage; it often means the right documentation wasn't presented at the time of the decision.

ClaimRight reviews your repair records, denial paperwork, and the manufacturer's own bulletins to identify whether your vehicle's problem matches a documented pattern. A free assessment can show what options may be available to you, with no obligation and no upfront cost.