The Reliant Robin was first introduced in November 1973 and replaced the Reliant Regal 3/30. Designed by Ogle Design Ltd (under the code name TW8) the Robin was powered by a water cooled four-cylinder 750cc engine that yielded 32 bhp. The vehicle had a complete fiberglass body attached to a box steel chassis and featured a rear opening window that was soon a trend to be used on cars world wide. This allowed the Robin to make full use of its interior as luggage space and with the rear seats folded down had a loading capacity of 30 cubic feet. With the rear seats in use there was a loading capacity of 8.5 cubic feet behind them. Sitting on 10 inch wheels the Robin was the first Reliant 3-wheeler to be fitted with an anti-roll bar to give increased stability when cornering.
The Robin came in several variations, The Standard Robin, The Super Robin, The Robin Estate and the Robin Van. Advances in the body design by using pressed panels for certain areas made the body lighter and thus allowed the Robin to have a more luxurious interior when compared with older Reliants. The Super version featured more instruments on the dashboard than most 4-wheelers.
In 1975 the Robin received a few minor changes in its body work but the biggest change was that it was now powered by a more powerful 850cc engine which increased the power to 40 bhp and gave a top speed of 85 mph with a 0 - 60mph time of 16.1 seconds. The engine also featured a new SU type carburettor which replaced the old Zenith downdraught type. The Robin was also to receive a further boost when HRH Princess Anne brought a Robin Super Saloon when she was living at Sandhurst Royal Academy..
The Reliant Robin has become one of the most famous 3-wheelers in the UK and was produced in its thousands and shipped World wide until 1981 when in this form, it was replaced by the Reliant Rialto.