- The problem
- The possibility exists that the aluminum engine rear support brackets may fail due to metal fatigue. This type of failure would allow the engine and transmission assembly to dislocate downward. This will result in throttle control loss with the engine operating continuously in the mid to upper range of the governed speed range.
- The fix
- Dealer will inspect and, if necessary, replace aluminum support brackets with brackets made from ductile iron for increased strength.
Vehicle safety record
1976 Mack RWS Problems, complaints & recalls
No owner complaints about the 1976 Mack RWS have been filed with NHTSA. It is covered by 1 recall, the latest in August 1978 for the engine.
NHTSA data checked
AFar fewer problems than a typical RWS year, for its age
- Complaints
- 0
- Recalls
- 1
- Crashes
- 0
- Fires
- 0
- Injuries
- 0
- Deaths
- 0
1976 Mack RWS recalls 1
Recall repairs are free. Your dealer fixes them whether or not you bought the car there - check your VIN at nhtsa.gov/recalls to see if yours is done. What to do
What owners say
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No complaints about the 1976 Mack RWS yet
No owner has filed a complaint about this vehicle with NHTSA. If yours has a problem, share it here and report it to NHTSA.
Mack RWS: every year compared
All RWS yearsQuestions about the 1976 Mack RWS
Does the 1976 Mack RWS have any recalls?
Yes - NHTSA lists 1 recall for the 1976 Mack RWS: engine (August 1978). Recall repairs are free at any authorized dealer. Enter your VIN at nhtsa.gov/recalls to see whether yours has been fixed.
How many complaints has the 1976 Mack RWS had?
None have been filed with NHTSA so far.
Is the 1976 Mack RWS a reliable vehicle?
Its Safety Index is 92 out of 100 (grade A: far fewer problems than a typical Mack RWS year, for its age). The index weighs complaints, crashes, fires, injuries, deaths and recalls against how long the vehicle has been on the road, compared with the same model's other years. It is not a measure of every repair - read the complaints and owner experiences, and have any used vehicle inspected before you buy.
What should I do if my 1976 Mack RWS has a problem?
If it is a safety problem, stop driving it if it is unsafe and contact your dealer. Report it to NHTSA at nhtsa.gov/report-a-safety-problem - enough reports start investigations and recalls - and share your experience here so other owners know what to look for.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked . Complaints are owners' own reports and are not verified. How we use the data