- The problem
- Deficiencies, in the form of forging laps, cracks and excessive decarburization during heat treatment, exist in the steering knuckles. Stresses imposed with integral hydraulic power steering may lead to a failure in the area of the steering arm attaching boss. This type of failure would cause loss of steering control.
- The fix
- Dealer will inspect and, if necessary, replace the left steering knuckle with an improved type of knuckle.
Vehicle safety record
1971 Mack MB Problems, complaints & recalls
No owner complaints about the 1971 Mack MB have been filed with NHTSA. It is covered by 5 recalls, the latest in August 1978 for the arm.
NHTSA data checked
DMore problems than a typical MB year, for its age
- Complaints
- 0
- Recalls
- 5
- Crashes
- 0
- Fires
- 0
- Injuries
- 0
- Deaths
- 0
1971 Mack MB recalls 5
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 1971 Mack MB 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 MB: every year compared
All MB yearsQuestions about the 1971 Mack MB
Does the 1971 Mack MB have any recalls?
Yes - NHTSA lists 5 recalls for the 1971 Mack MB: arm (August 1978); multiple axle (June 1975); banjo housing (February 1974); hubcap / cover (December 1971) and more. 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 1971 Mack MB had?
None have been filed with NHTSA so far.
Is the 1971 Mack MB a reliable vehicle?
Its Safety Index is 32 out of 100 (grade D: more problems than a typical Mack MB 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 1971 Mack MB 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