Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1977 450SLC.
For researchers examining the 1977 Mercedes 450SLC, the model presents an exceptionally stable data point within its broader history, defined by a distinct lack of widespread owner grievances. Recording zero recalls and only a single total owner complaint—which focuses entirely on the vehicle's structure—the 1977 model year demonstrates a notable absence of systemic issues. This minimal fault rate places the 450SLC at a high point in the model's reliability history, meaning that researchers can view this specific year as a benchmark of manufacturing and engineering consistency rather than a source of common mechanical failures.
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
Owner complaints about the 1977 Mercedes 450SLC dominate in one area — the structure, 1 of 1 reports (100%), well ahead of the next concern. NHTSA has issued no recalls for this vehicle, so these are owner-reported concerns only. 0 of the reports describe a crash and 0 a fire — a small share of the total, but worth weighing against the structure pattern above. These are tallies of what owners actually reported to the federal government, not an editorial score — and higher-selling models naturally rack up more reports.
All 1 complaints on record, top 1 components.
Source: NHTSA Office of Defects Investigation complaint database.
No recall campaigns on record with NHTSA for this vehicle as of the last data refresh.
The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.
Decode factory build data for a specific vehicle by VIN.
Cross-vehicle references for the kinds of data on this page.
NHTSA lists 0 recall campaign(s) for this model year. Check your specific vehicle by VIN.