design, yet was still a SOHC design. It produced . Contemporary Suzuki Swifts were available with only the four-cylinder, and only as a hatchback. The hatchback body configuration featured a three-inch lower liftover height compared to the previous generation model. Safety equipment included optional anti-lock brakes, safety cage construction with deformable front and rear crush zones and five structural crossbars engineered to spread side impact loads throughout the car's structure, steel side impact door safety beams, and daytime running lights (the second generation Metro was the second GM car to offer DRLs in the United States—the 1995 Chevrolet Corsica was the first)—and dual frontal airbags. The Saturn S-series had DRLs beginning in 1994. A new, one-piece instrument panel was mounted to one of the five crossmembers with a new, full seal filling the gap between the instrument panel and the dash. The sedan and coupe chassis were 20% and 5% stiffer respectively than the previous generation 5-door and coupe Metros, and at the time of its introduction, the Metro was the smallest car in the world to meet the impending 1997 North American side impact standards. The revised sedan was also introduced in the United States, replacing the 5-door hatchback. This generation featured a coefficient of drag of 0.32. Its twins, Pontiac Firefly and Suzuki Swift featured the same redesign. At the introduction of this generation, GM arranged for a car carrier with 1995 Metros to drive to college campuses across the country. Local writers took a half-day seminar at "Metro University" with the head product planner and senior members of the engineering, assembly, and marketing teams. At the time this generation was introduced, 41 percent of Metro buyers were first-car buyers, 62 percent of the buyers were female, and the median age of a Metro buyer was 37. The American Council for an Energy-Efficient Economy (ACEEE) named this generation of Chevrolet Metro and Suzuki Swift as the top two gasoline-fueled vehicles within their Top 12 Greenest Vehicles in 1998 and 1999. ACEEE assigns a Green Score to each vehicle make and model sold in the US, based on the vehicles' exhaust emissions, fuel economy and other specifications. 1996 – OBD-II (On-Board Diagnostics, Second generation) was added to Metro models, at a cost of some fuel efficiency. 1997 – The last year for the Geo brand. The Metro returned in 1998 with a Chevrolet nameplate. 1998 – The Metro now