Defect
SEAT TETHER BELTS MAY NOT HAVE BEEN ADJUSTED DURING ASSEMBLY.
Consequence
DURING AN IMPACT, DRIVER AND/OR RIDER CAN MOVE FORWARDAND POSSIBLY STRIKE THE WINDSHIELD, EVEN WHEN WEARING A SEAT BELT.
Remedy
ADJUST SEAT TETHER BELT IF NECESSARY.
1986 Mack MH problems
Verdict · NHTSA data
Limited data — recalls on file
NHTSA has just 0 complaints on file for the 1986 Mack MH — too few to judge reliability from owner reports alone — but 3 recall campaigns apply to this year, so any used example should have its VIN checked for completed recall work.
0
NHTSA complaints
3
Recalls
1
Investigations
0
Crash-involved
0
Fires reported
0
Injuries
0
Deaths
—
NCAP overall
Does the 1986 Mack MH have recalls?
3 NHTSA recall campaigns on file. Recall repairs are free at franchised dealers.
Defect
ON RIGHT HAND STEERING ARM, KEYWAY MAY BE IN THE WRONG LOCATION CAUSING A TOGGLE CONDITION TO OCCUR UNDER CERTAIN CONDITIONS.
Consequence
THIS COULD RESULT IN SLOW STEERING RETURN WITHOUT PRIORWARNING WHICH WOULD AFFECT STEERING CONTROL AND CREATE THE POTENTIAL FOR ACRASH.
Remedy
REPLACE INCORRECT STEERING ARM.
Defect
LEFT OR RIGHT CAB STEP MAY CRACK IN ITS WELDED AREA DUE TO FLEXING OF THE STEP DURING ENTERING AND EXITING. CONSEQUENCE OF DEFECT: AS THE CRACKS EXTEND, THE TUBULAR STEP COULD PARTIALLY COLLAPSE AND BREAK WITHOUT WARNING TO THE USER, AND COULD RESULT IN PERSONAL INJURIES.
Remedy
INSTALL A REINFORCEMENT BRACE IF NO CRACKS ARE FOUND. IN ADDITION, REPLACE STEP IF CRACKS ARE PRESENT.
1986 Mack MH — common questions
Is the 1986 Mack MH reliable?
The record is thin — 0 NHTSA complaints — so owner-report data can't strongly confirm reliability either way, though 3 recalls should be verified as completed.
Does the 1986 Mack MH have recalls?
Yes — NHTSA lists 3 recall campaigns affecting the 1986 Mack MH. Recall repairs are free at franchised dealers; check the VIN at nhtsa.gov/recalls to confirm the work was done.
Is the 1986 Mack MH under NHTSA investigation?
NHTSA opened one investigation into this model year; all are now closed.
Related
Based on NHTSA ODI data through June 2026. Complaints are consumer-reported and unverified. Updated July 5, 2026.
Compiled by Sharon Ben-Moshe, Founder.