The DB5 differed only slightly from the last DB4, the Series 5 Vantage. Faired in headlights and the enlarged 4.0-liter, triple carburetor engine was standard. Just 123 DB5 convertibles were built during 1963 to 1964. They were slightly heavier than the previous DB4 due to standard electric windows and other features, including a five-speed gearbox.