Built during the era when tougher fuel economy laws had just come into effect in the US and the national speed limit was 55 mph to save fuel, the LeSharo was intended to appeal to drivers who wanted better fuel efficiency than traditional motor homes. The chassis and cab were built by Renault, based on the same platform as the Renault Trafic. Renault soldcomplete knock down (CKD) kits to Winnebago All the 1983 models were powered by the 2068cc all aluminum OHC 4 cylinder normally-aspirated diesel engine (producing 66 hp) with a 4 speed manual transaxle, yielding 22 mpg (US). In 1984 an optional turbo charger was added, increasing power to 75 hp. In 1985, a 2165cc Bosch fuel injected 4 cylinder gasoline engine became available, with a 3 speed computer-controlled automatic transaxle, delivering more power but somewhat less fuel economy and making the vehicle 423 lb (192 kg) heavier. After 1986, the diesel engine was discontinued.