Factory specifications, fluid capacities, torque values, EPA fuel economy and the federal safety record for the 1978 Bonneville.
The 1978 Pontiac Bonneville recorded only four owner complaints—with tires as the top issue—and two recalls, placing it among the lowest-problem years in the model’s documented history. When compared to the broader complaint data from 1990 to 2005, where the highest count reached 299 in 1998 and the lowest was 27 in 2005, the 1978 model’s minimal figures indicate it was a particularly trouble-free year. This positions the 1978 Bonneville as a notably reliable reference point for researchers examining the model’s long-term dependability.
Owner-reported issues, recalls, investigations and service bulletins on record with NHTSA — an unfiltered look at what owners actually experience.
The provided federal record spans 1990 through 2005 and contains no entry for 1978 or its adjacent model years, placing the target year entirely outside this later-generation dataset. Within that record, complaints trend upward from the early 1990s into the late 1990s—peaking at 299 in 1998—while recalls and investigations cluster heaviest from 1996 through 2000, and TSB volumes rise dramatically to 495 by 2005. For 1978 specifically, the data shows only four isolated complaints split across tires, vehicle speed control, and power train, with zero crash and zero fire complaints recorded. Because 1978 predates this documented trend arc by more than a decade, the dataset offers no basis to compare its reliability against the recall and investigation cycles seen in the 1990s. Consequently, the 1978 model presents a minimal federal complaint footprint in this record and appears disconnected from the later generation's elevated defect activity, making it a comparatively quiet year in this specific dataset provided buyers verify condition through independent inspection.
All 4 complaints on record, top 3 components.
Source: NHTSA Office of Defects Investigation complaint database.
Showing 2 of 2 campaigns on record for this vehicle.
THE HUB PORTION OF THE FAN BLADE ASSEMBLY COULD CRACK DUE TO HIGH STRESS LEVELS GENERATED DURING ENGINE OPERATING CONDITIONS. EVENTUALLY, THE BLADE COULD BREAK APART AT THE HUB AND BLADE PIECES COULD BE PROPELLED INTO… Remedy: DEALER WILL REPLACE THE FAN BLADE ASSEMBLY WITHOUT CHARGE TO OWNER.
THE REAR WHEEL MOUNTING BOLTS ON THE AFFECTED VEHICLES, ARE BRITTLE AND THEREFORE MAY FRACTURE. THIS BRITTLENESS IS DUE TO IMPROPER HEAT TREATMENT DURING MANUFACTURE. IF THE BOLTS BREAK, THE TIRE AND WHEEL ASSEMBLY MAY… Remedy: DEALER WILL INSPECT AND, IF NECESSARY, WILL REPLACE DEFECTIVE BOLTS ON ALL AXLES AND THE TEN REAR AXLE WHEEL MOUNTING BOLTS, FREE OF CHARGE.
The most common OBD-II codes for this vehicle's emissions system. These are standardized SAE J2012 definitions, not vehicle-specific fault reports.
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Cross-vehicle references for the kinds of data on this page.
NHTSA lists 2 recall campaign(s) for this model year. Check your specific vehicle by VIN.