Penetrating the market via the grey market first, is a valid market entry strategy. The Lamborghini Countach was initially only available as a grey market vehicle (from 1976 to 1985), as were the Range Rover and Mercedes-Benz G-Class. These automakers later made US models to meet the demand. Many otherwise unavailable vehicles did enter the US via the grey market, like the Citroën CX and Renault 5 Turbo. This avenue of vehicle availability was increasingly successful, especially in cases where the US model of a vehicle was less powerful and/or less well equipped than versions available in other markets. For example, Mercedes-Benz chose to offer only the sluggish 380SEL model in 1981 to Americans, some of whom wanted the much faster 500SEL available in the rest of the world. BMW had the same issue with their 745i Turbo.