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1976 Mack HMMProblems, recalls & complaints

NHTSA has logged 0 owner complaints about the 1976 Mack HMM. It is covered by 4 safety recalls.

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CarFlaw IndexNot enough dataHigher is better (0–100)
Safety recalls4Free fix at dealersOwner complaints00 with a crash, fire or injuryTop problem0—

Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through April 4, 1978. Updated daily.

Complaints by system

Where the 1976 Mack HMM has problems

0 complaints grouped by the system owners reported.

Box size = number of complaints naming that system. Darker = larger share. One complaint can name more than one system.
Complaints by system
SystemComplaintsCrash, fire or injury

Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.

4 recalls

1976 Mack HMM recalls and how many were fixed

Each ring shows the share of affected cars repaired, from the manufacturer’s latest quarterly report to NHTSA. Recall repairs are free at authorized dealers.

Recalls apply to specific cars. To see whether a recall is still open on yours, enter the 17-character VIN at nhtsa.gov/recalls or with Mack.

Best & worst years

1976 vs. every other HMM year

Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the HMM median. How we score

'72'73'74'75'76'77
  • Avoid
  • Caution
  • Solid
  • Best
  • Not rated

Own a 1976 HMM?

Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.