Book excerpt: A renowned Jaguar expert offers a comprehensive historical review of the highly collectable XJS series of coupes, cabriolets and convertibles with particular emphasis on quality evaluation, maintenance and upgrades. Jaguar XJS takes the reader through the 20-year history of a model series which, after a lukewarm reception in 1975 by Jaguar enthusiasts who expected a replacement for the famed E-Type, matured through many evolutions into some of the most stylish cars ever to wear the Jaguar badge, earning along the way an enviable reputation on the international motor racing scene.