The REVAi, known as G-Wiz in the UK, is a small micro electric car, made by the Indian manufacturer REVA Electric Car Company since 2001. The REVA have sold more than 4,000 vehicles worldwide by March 2011 and is available in 26 countries.

In many countries the Revai does not meet the criteria to qualify as a highway-capable motor vehicle, and fits into other classes, such as neighborhood electric vehicle (NEV) in the United States and heavy quadricycle in Europe.

The vehicle was originally known as simply the REVA, but was then improved and renamed the REVAi. Taken together, the original and current models made the best selling electric vehicle in the world until late 2009.

The REVAi is a small 3-door hatchback measuring 2.6 m (8 ft 6 in) long, 1.3 m (4 ft 3 in) wide and 1.5 m (4 ft 11 in) high. The car can accommodate two adults in the front and two children in the rear. The back seats can fold down to provide cargo space. The maximum passenger and cargo weight is 270 kg (600 lb).

The REVAi is intended for city trips and commuting, particularly in congested traffic. It is registered in Europe as a heavy quadricycle (category L7). It may be exported to the USA with a speed limiter that limits the speed to 25 miles per hour for use as a neighborhood electric vehicle (NEV).