with GM offering a sedan version of the Geo Metro instead. The Geo Metro sedan was not available from Chevrolet dealers in the United States until 1995, although a Suzuki Swift-branded version was on sale from 1990. Design patents were filed by the Toyota Motor Corporation on December 6, 1985, using a final design 1:1 representation, under application number 1985-051078 and registered on July 13, 1988, under registration number 0718088-005. Trims & options Sedan: base • 1990-1992 GSi • 1990-1992 LSi • 1990-1992 Hatchback: base • 1990-1992 GSi • 1990-1992 LSi • 1990-1992 Second generation (E100) The Prizm's second generation, and the last under the Geo brand name, debuted in 1992 for the 1993 model year. The Prizm gained more room (resulting in an upgrade to United States Environmental Protection Agency "compact" car status), a driver's-side airbag, and a new 1.8-liter four-cylinder engine optional on LSi trim. With the larger engine came a rear stabilizer bar, wider tires, and an optional automatic transmission with four speeds instead of three. A second airbag became standard in 1993 for the 1994 model year; leather seats were an option on the LSi of this generation. In contrast with the Sprinters sold in Japan, this generation Prizm lacked a front stabilizer bar in its suspension. U.S. Electricar used the Prizm as the basis for an electric vehicle conversion that replaced the gasoline drivetrain with an electric traction motor and high-voltage lead-acid storage battery. It was marketed in 1994. Trims & options Sedan: base • 1993-1997 LSi • 1993-1997 Third generation (E110) The Prizm's 1998 redesign coincided with the conversion of all remaining Geo models into Chevrolets, as General Motors made the decision to discontinue the Geo brand entirely after 1997. The most notable change was the new 1.8-liter engine, which was now all-aluminum, driven by a timing chain (instead of a timing belt), and making more power (with the same fuel economy) than the engines from the Geo era. The new all-aluminum engine known as the 1ZZ-FE powered all Corollas, Sprinters, and Prizms, making this generation lighter than its predecessor. This new engine incorporated laser etched valve guides directly in the block, rather than the old shrink-to-fit valve guides in the preceding Corolla motors (4A-FE & 7A-FE). This prevents oil burning and valve guide failure in the future. The Prizm, alongside the Corolla, became the first car in the compact class to offer optional