Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1978 Zephyr.
The 1978 Mercury Zephyr stands as a notably problematic model year within the nameplate's history, a distinction underscored by its substantial recall count of 11—a figure that alone signals the scope of factory defects requiring manufacturer intervention during this production period. Beyond regulatory actions, owner-reported complaints for this model year total a modest 2, suggesting that while formal defect investigations were extensive, the on-road ownership experience generated relatively few recorded grievances from the driving public. The sole identified complaint category among those reported instances centers on seat belt systems, indicating that despite the breadth of recalls issued, safety restraint components emerged as the primary hands-on concern for consumers. This combination of high recall activity paired with limited complaint volume positions the 1978 Zephyr as a year where factory-initiated fixes likely preempted many potential issues, though the sheer volume of recalls remains the defining characteristic of this model's reliability profile.
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
Owner complaints about the 1978 Mercury Zephyr dominate in one area — the seat belts, 1 of 2 reports (50%), well ahead of the next concern. None of this vehicle's 11 recall campaigns target the seat belts, so those reports read as owner-reported wear-and-tear rather than an acknowledged defect. 0 of the reports describe a crash and 1 a fire — a small share of the total, but worth weighing against the seat belts 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 2 complaints on record, top 2 components.
Source: NHTSA Office of Defects Investigation complaint database.
Showing 2 of 11 campaigns on record for this vehicle.
CERTAIN FEDERAL-MOGUL AFTERMARKET FUEL PUMPS SOLD UNDER THE BRAND NAMES OF CARTER, ACCUFLOW, NAPA, TRUFLOW, PARTS DEPO, AND PARTS MASTER, SHIPPED BETWEEN AUGUST 2006 AND JULY 2007 FOR USE ON THE VEHICLES LISTED ABOVE… Remedy: FEDERAL-MOGUL WILL NOTIFY OWNERS AND REPLACE THE DEFECTIVE FUEL PUMPS FREE OF CHARGE. THE RECALL BEGAN ON OCTOBER 15, 2007. OWNERS CAN CONTACT FEDERAL-MOGUL AT 248-354-7700.
BECAUSE OF ITS POSITION, THE WIRING ASSEMBLY MAY CHAFE AGAINST THE COWL-TO-BRAKE PEDAL SUPPORT BRACE WHICH IS LOCATED UNDER THE INSTRUMENT PANEL. Remedy: THE DEALER WILL INSTALL PROTECTIVE SHIELDS ON THE BRAKE PEDAL SUPPORT BRACE AND PERFORM REPAIRS, IF NECESSARY.
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 11 recall campaign(s) for this model year. Check your specific vehicle by VIN.