The 1978 Porsche 928 has 3 recalls, the most serious involving a steering shaft universal joint that can work loose after extended driving on rough roads, creating excessive play in the steering wheel and reducing steering precision.
A second recall covers several mechanical issues: the front axle caster and camber adjusters can crack and shift, causing wheel misalignment that affects handling; the rear brake hoses may be twisted and can chafe against surrounding components until they leak; and the emergency brake cable may be routed in a way that causes it to wear through over time, reducing parking brake effectiveness. That same recall also notes that the cruise control switch can stick and leave the system inoperative, though this is the least safety-critical of the group. The third recall is a compliance matter involving vehicle certification labels that omit the required production date, with no mechanical defect involved.