Verdict · NHTSA data
Limited data — recalls on file
NHTSA has just 0 complaints on file for the 1990 Mack MR — 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
0
Investigations
0
Crash-involved
0
Fires reported
0
Injuries
0
Deaths
—
NCAP overall
3 NHTSA recall campaigns on file. Recall repairs are free at franchised dealers.
Defect
THE STEERING ARM CAN DEVELOP CRACKS CAUSING THE LEVER TO BREAK WITHOUT WARNING.
Consequence
THIS CAN RESULT IN LOSS OF STEERING CONTROL AND AN ACCIDENT.
Remedy
DEALERS WILL REPLACE THE STEERING LEVERS WITH AN IMPROVED STEERING LEVER WITH INCREASED FATIGUE STRENGTH.
Defect
FUEL INJECTION SYSTEM RECONFIGURATION TO COMPLY WITH ENGINE EMISSION STANDARDS CAUSE HIGHER ENGINE VIBRATION LEVELS WHICH LEAD TO EARLY WEAR AND COMPLETE FAILURE OF THE SECONDARY THROTTLE RETURN MECHANISM.
Consequence
IN THE EVENT THE PRIMARY THROTTLE RETURN FAILS, FAILURE OF THE SECONDARY THROTTLE RETURN SYSTEM WOULD NOT PROVIDE PROTECTION AGAINST LOSS OF THROTTLE CONTROL.
Remedy
A NEW PRODUCTION SECONDARY THROTTLE RETURN SYSTEM CONFIGURATION WILL BE INSTALLED.
Defect
THE STONE BENNETT SHIFTERS DO NOT INDICATE THE RELATIVE POSITION OF THE SHIFT LEVER TO THE DRIVER.
Consequence
THE SHIFT LEVER DOES NOT MEET THE REQUIREMENTS OF FMVSS102.
Remedy
INSTALL A DECAL DISPLAYING THE RELATIVE SHIFT POSITIONS.
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.
Yes — NHTSA lists 3 recall campaigns affecting the 1990 Mack MR. 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.