2004 Mack RB problems

Verdict · NHTSA data

Limited data — recalls on file

NHTSA has just 0 complaints on file for the 2004 Mack RB — too few to judge reliability from owner reports alone — but 2 recall campaigns apply to this year, so any used example should have its VIN checked for completed recall work.

NHTSA complaints

Recalls

Investigations

Crash-involved

Fires reported

Injuries

Deaths

—

NCAP overall

How does 2004 compare to other RB years?

RB NHTSA complaints by model year, 2004 highlighted. Red bars are years to avoid.

See all RB years to avoid →

Does the 2004 Mack RB have recalls?

2 NHTSA recall campaigns on file. Recall repairs are free at franchised dealers.

10V069000TransmissionMarch 3, 2010 · 15,490 units

Defect

MACK TRUCKS IS RECALLING CERTAIN MODEL YEAR 2002 THROUGH 2004 CL, CV, LE, MR, RB, RD, AND MODEL YEAR 2003 THROUGH 2004 DM HEAVY TRUCKS MANUFACTURED FROM FEBRUARY 1, 2002 THROUGH SEPTEMBER 30, 2003, EQUIPPED WITH AXLE BEAMS MANUFACTURED BY BHARAT FORGE. THE AXLE BEAM MAY HAVE TRANSVERSE SHEAR LINES ON THE BOTTOM OF THE AXLE FROM THE TRIMMING PROCESS.

Consequence

THESE LINES, IF PRESENT, CAN PROMOTE INITIATION OF CRACKS, WHICH OVER TIME MAY POSSIBLY LEAD TO AXLE BEAM FAILURE AND A VEHICLE CRASH CAN OCCUR.

Remedy

MACK WILL NOTIFY OWNERS, INSPECT AND REPLACE ANY AFFECTED AXLE BEAMS FREE OF CHARGE. THE SAFETY RECALL BEGAN ON MARCH 5, 2010. OWNERS MAY CONTACT MACK AT 1-800-866-1177.

09V240000TransmissionJune 30, 2009 · 10,300 units

Defect

MACK IS RECALLING 10,300 MODEL YEAR 2004 AND 2005 CL, CV, DM, LE, AND RB AND MODEL YEAR 2004 RD HEAVY TRUCKS MANUFACTURED FROM OCTOBER 1, 2003 THROUGH SEPTEMBER 30, 2004, EQUIPPED WITH AXLE BEAMS MANUFACTURED BY BHARAT FORGE. THE AXLE BEAM MAY HAVE TRANSVERSE SHEAR LINES ON THE BOTTOM OF THE AXLE FROM THE TRIMMING PROCESS.

Consequence

THESE LINES, IF PRESENT, CAN PROMOTE INITIATION OF CRACKS, WHICH OVER TIME MAY POSSIBLY LEAD TO AXLE BEAM FAILURE AND A VEHICLE CRASH CAN OCCUR.

Remedy

MACK WILL NOTIFY OWNERS, INSPECT AND REPLACE ANY AFFECTED AXLE BEAMS FREE OF CHARGE. THE SAFETY RECALL BEGAN ON AUGUST 14, 2009. OWNERS MAY CONTACT MACK AT 1-800-866-1177.

2004 Mack RB — common questions

Is the 2004 Mack RB reliable?

The record is thin — 0 NHTSA complaints — so owner-report data can't strongly confirm reliability either way, though 2 recalls should be verified as completed.

Does the 2004 Mack RB have recalls?

Yes — NHTSA lists 2 recall campaigns affecting the 2004 Mack RB. Recall repairs are free at franchised dealers; check the VIN at nhtsa.gov/recalls to confirm the work was done.

Based on NHTSA ODI data through June 2026. Complaints are consumer-reported and unverified. Updated July 5, 2026.

Compiled by Sharon Ben-Moshe, Founder.

How does 2004 compare to other RB years?

Does the 2004 Mack RB have recalls?

2004 Mack RB — common questions

Is the 2004 Mack RB reliable?

Does the 2004 Mack RB have recalls?

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