The fourth-generation 4Runner incorporated serious changes to the chassis and body of the vehicle, but was targeted at approximately the same demographics as the third generation. Based on the Land Cruiser Prado 120 series, the new 4Runner retained the same basic exterior styling themes, and was still marketed as a mid-size semi-luxury SUV with off-road capabilities. Available trims were the SR5, Sport Edition, and Limited models. An all-new LEV certified 4. 0 L 1GR-FE V6 which produces 245 hp (183 kW) and 282 lb⋅ft (382 N⋅m) of torque is standard, but for the first time, a V8 became available, the ULEV certified 4. 7 L 2UZ-FE engine which in the US produced 235 hp (175 kW) and 320 lb⋅ft (434 N⋅m). In 2004, for the 2005 model year, the addition of VVT-i increased output to 268 hp (200 kW) and 315 lb⋅ft (427 N⋅m). Fuel economy is estimated at 17 mpg city, 20 mpg highway for the V6 and 15/19 mpg for the V8. Towing capacity is 5,000 lb (2,300 kg) on V6 models and 7,300 lb (3,300 kg) on RWD V8 models (7000 pounds w/4WD). The 4Runner first entered dealer showrooms in October 2002 for the 2003 model year. Three trims levels were offered, SR5, Sport Edition, and Limited. When it was first introduced the SR5 and Sport Edition models used gray plastic cladding and bumpers. Sport models also featured a non-functional hood scoop.