Verdict · NHTSA data
Limited data — recalls on file
NHTSA has just 0 complaints on file for the 1978 Plymouth Mb300 — too few to judge reliability from owner reports alone — but one recall campaign applies to this year, so any used example should have its VIN checked for completed recall work.
0
NHTSA complaints
1
Recalls
0
Investigations
0
Crash-involved
0
Fires reported
0
Injuries
0
Deaths
—
NCAP overall
1 NHTSA recall campaign on file. Recall repairs are free at franchised dealers.
Defect
THE FRONT BRAKE HOSE ROUTING MAY ALLOW INTERFERENCE BETWEEN THE HOSES AND THE TIRE AND WHEEL ASSEMBLIES DURING EXTREME TURNING ANGLES.
Remedy
DEALER WILL REPLACE BOTH LEFT AND RIGHT FRONT BRAKE HOSES AND INSTALL A NEW BRAKE HOSE SUPPORT BRACKET TO ELIMINATE CONTACT WITH TIRE/WHEEL.
The record is thin — 0 NHTSA complaints — so owner-report data can't strongly confirm reliability either way, though 1 recall should be verified as completed.
Yes — NHTSA lists 1 recall campaign affecting the 1978 Plymouth Mb300. 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.