1980 saw the arrival of the Excalibur Series IV, the model of Excalibur that brought about the first real change in appearance of the marque. It was also the first Excalibur to have glass side windows, a trunk/boot integrated within the bodywork and an electrically operated soft-top for the phaeton, as well as roadster models. The chassis, especially unchanged relative to the Series III's, was again stretched, this time by 13 inches. The styling had also evolved. It still undeniably evoked vintage Mercedes-Benz, but this time emulated the 500/540K series rather than the SS/SSK. This Series IV Phaeton utilizes a 350-cid General Motors V-8 engine and is also equipped with an automatic transmission. Although the performance continued to be decreased due to ever-increasing Federal requirements, the buying public seemed to readily accept this as they appeared more concerned with comfort and appointments than out-and-out performance dynamics.

The silver with black Excalibur Series IV Phaeton that is being offered has been in the same family since 1987 and is in original condition with 50,000 actual miles. It has power steering, power brakes, power windows, a radio with cassette tape player and both a hardtop and soft-top that are presented in black. Additional features include chrome wire wheels, dual spotlights, dual side-mounted spares, faux external exhaust and integral trunk.