Verdict · NHTSA data
Limited data — recalls on file
NHTSA has just one complaint on file for the 1984 Mack R Series — 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.
1
NHTSA complaints
2
Recalls
0
Investigations
0
Crash-involved
0
Fires reported
0
Injuries
0
Deaths
—
NCAP overall
| Component | Complaints | Share | vs prior year |
|---|---|---|---|
| Transmission | 1 | 100% | new |
2 NHTSA recall campaigns on file. Recall repairs are free at franchised dealers.
Defect
THE ACCELERATOR ROD HOLE CLEARANCE IS NOT ADEQUATE AND CAN CAUSE THE ACCELERATOR LINKAGE TO BIND. CONSEQUENCE OF DEFECT: IF BINDING OCCURS WHILE IN A FULL THROTTLE POSITION, ACCELERATOR CONTROL WOULD BE LOST WITHOUT WARNING AND AN ACCIDENT COULD OCCUR.
Remedy
ENLARGE THE ACCELERATOR ROD HOLE TO ELIMINATE INTERFERENCE WITHIN ACCELERATOR LINKAGE.
Defect
IMPROPER STEERING CLAMP BOLTS AND TORQUE APPLIED DURING INSTALLATION. THE BOLT COULD FAIL, ALLOWING THE STEERING YOKE TO BECOME LOOSE.
Remedy
INSPECTION AND, IF NECESSARY, INSTALLATION OF PROPER STEERING SHAFT CLAMP BOLTS TIGHTENED TO SPECIFICATIONS.
Representative excerpts, cleaned of personal information. These are consumer statements, not verified defects.
“1984 MACK SUPER LINER DRIVE SHAFT BROKE RUPTURING THE FUEL TANK. CONSUMER STATES THAT WHEN THE DRIVE SHAFT BROKE AND RUPTURED THE FUEL TANK IT SPILLED ABOUT 50 TO 75 GALLONS OF DIESEL FUEL ONTO THE ROADWAY. *KB”
The record is thin — 1 NHTSA complaint — so owner-report data can't strongly confirm reliability either way, though 2 recalls should be verified as completed.
Yes — NHTSA lists 2 recall campaigns affecting the 1984 Mack R Series. 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.