Reliant Robin
Mostly unknown to the automotive public outside the United Kingdom, Reliant has been producing cars since the 1930s and three-wheel vehicles since the early ’50s. In 1973, Reliant introduced the Robin, just in time for the oil crisis, which greatly helped their sales. With its 850 cc engine delivering around 50 HP, the Reliant Robin weighed just under 1,102 pounds (via Reliant Motor Club).
That combination made it surprisingly agile and fuel-efficient. However, the three-wheel configuration was tricky in tight turns. In fact, Robins was famous for flipping if the driver entered a curve too fast. Although slow, Robins wasn’t safe at all.