In 1957 Jaguar introduced the XK-150, a replacement for the XK-140. The XK-150 had many similarities to its predecessors but it featured modern styling and improved mechanics. Only 4,450 Coupes were produced of the XK-150 between 1957 and 1961 with 10,000 XK-150’s produced total. The XK-150 was plusher and more civilized, and substantially restyled, with a re-contoured beltline, wider grille and a one-piece windshield. The curvature of the line from front to rear fender was much straightened, resulting in a heavier look. For better drivability, disc brakes were fitted with servo assist.