The Jaguar XK150 is a sports car produced by Jaguar between 1957 and 1961 as the successor to the XK140. Initially it was only available in fixed head coupé (FHC) and drophead coupé (DHC) versions. The roadster without full weather equipment which had begun the XK line was launched as the XK150 OTS (open two-seater) in 1958. Minimal rear seats were fitted in the coupés. The open two-seater was fitted for the first time with wind-up windows in taller high-silled doors, but retained the very simple folding roof of its predecessors.