The Lotus Carlton (other names include Vauxhall Lotus Carlton, Lotus Omega and Opel Lotus Omega) was a Vauxhall Carlton/Opel Omega A saloon upgraded by Lotus to be a 177 mph (285 km/h) sports saloon with acceleration to equal contemporary supercars. Like all Lotus vehicles, it was given a type designation—Type 104 in this case. The external differences were minimal with the addition of a rear spoiler, vents on the bonnet, Lotus badges on the front wings and bootlid, a bodykit and considerably wider wheel arches distinguishing it from a standard Carlton/Omega. The car was only sold in one colour, a shade called Imperial Green, a very dark green that in anything but direct light appears black.