The 1977 Mercedes-Benz 450 has 2 NHTSA recall campaigns affecting an estimated 64,556 vehicles. Recall repairs are always free at any authorized dealer. Owners have filed 3 complaints with NHTSA, most often about the electrical system. Last updated July 5, 2026.
THE AUTOMATIC TRANSMISSION DOWNSHIFT LINKAGE ADJACENT TO THE ENGINE THROTTLE CONTROL CONTAINS A PLASTIC BUSHING THAT COULD DEFORM DUE TO HIGH ENGINE COMPARTMENT TEMPERATURES CREATED BY THE CATALYTIC CONVERTER.
PLASTIC BUSHINGS WILL BE REPLACED WITH STEEL BUSHINGS.
THE FUEL TANK COULD DEFORM DUE TO THE FUEL TANK VALVE CAUSING BLOCKAGE OF THE FUEL TANK VENTILATION SYSTEM.
THE DEALER WILL INSPECT AND, IF NECESSARY, WILL REPLACE THE FUEL TANK VENT VALVE WITHOUT CHARGE.
Verbatim reports filed with NHTSA, lightly edited for readability and with personal information removed.
“There are thousands of this mercedes mdl from 1972 to 1982 (sl model) on the road. Help save someones life!, my auto was never in a crash or body damage! No safety defect mentioned in summary. *ak”
“Battery failed.”
“Catalytic converter failed.”
Recall, complaint, and investigation records from official NHTSA datasets (FLAT_RCL, FLAT_CMPL, FLAT_INV), synced weekly. Counts reflect NHTSA records for the 1977 Mercedes-Benz 450 as of July 5, 2026. Complaint narratives are consumer-submitted and unverified. This page contains ads and affiliate links. Full methodology.