marque was a part of Chevrolet, itself a part of General Motors, in the 1990s. Geo was formed to compete with the small and compact car import market, then dominated by Japanese automakers. The Geo nameplate was used from 1989 to 1997, when it was folded into the Chevrolet brand. Most Geo vehicles were joint ventures with Japanese automakers, including Toyota, Suzuki, and Isuzu.
The most popular Geo model was the Metro, introduced in 1989 and based on the Suzuki Swift/Cultus. The Metro was a subcompact car with very high fuel economy and markedly low price tag. These cars are still popular in the used market and are often repaired an driven into the several hundreds of thousand miles. They are also popular conversion vehicles for converting to electric drive, diesel, and other drivetrains by engine replacement.
The Geo Prizm was also a popular sedan and five-door hatchback built based on the Toyota E90 and replaced the Chevrolet Nova. This compact sedan sold well and won several awards for its value and economy.
The Geo Spectrum was the Chevrolet Spectrum re-badged with the advent of the Geo marque, but was quickly replaced by the Geo Storm, which proved to be a more popular model. The Storm was sporty, being based on the Isuzu Impulse, and was available as a two-door fastback or three-door hatchback. This is now a popular used Geo with tuners and enthusiasts upgrading the engine and exhaust systems to make the car into a true sports car.
The Geo Tracker was perhaps the most popular Geo model outside of the Metro. The Tracker was a small SUV based on the Suzuki Sidekick, itself a popular model. It was low-cost in comparison to alternatives from Jeep and others, had good capability, and was most often purchased in its convertible option. The Tracker remained popular enough that after the Geo marque was dropped, it continued as a Chevrolet model until 2004 when it was replaced by the Chevrolet Equinox. The Tracker is one of the most often asked for Geo models in the used car marketplace.