Sovereign 3.4 163 KM / 120 kW od 1975.05 do 1978.12 benzyna 3442 ccm 6 cyl. XK
Sovereign 4.2 205 KM / 151 kW od 1979.03 do 1986.10 benzyna 4235 ccm 6 cyl. XK 4.2 (82-87)