Cadillac Models & History 1966

Cadillac enjoyed its first 200,000-car year for calendar ’66, breaking the barrier by precisely 5001 units. A mild facelift brought a new front bumper and grille, plus more integrated taillight housings. The 75 switched to the new perimeter frame and was fully restyled for the first time since 1959. Variable-ratio power steering was a new option, as were carbon-cloth seat heating pads. The Fleetwood Brougham became a separate model, still more luxuriously trimmed than the plain-roof Sixty Special and priced about $320 higher.


Vehicle numbers were found on the left center pillar post.
The original engine serial number was the same as the vehicle identification number.
The numbering system was the same employed a year earlier with the second symbol changed to a “6” for 1966 model year.
All Eldorados now utilized the first two symbols “68” for their Style Number.
The Sixty-Special Brougham was now a separate model of the Fleetwood Series with a “P” Style Number suffix applied.


  • Best ever sales and production year in Cadillac history.
  • Second year running for sales increases, despite a downturn in the overall market for U.S. cars.
  • First season for delivery of more than 200,000 new units.
  • A record of 5,570 one-week builds was marked December 5 and a record one-day output of 1,017 cars was achieved October 27.
  • The 1966 models were introduced October 14, 1965.
  • Towards the end of the summer 1966, a new assembly line was setup to manufacture front-wheel-drive Eldorados conforming to 1967 model specifications.