Kia's entry-level subcompacts get subtle styling changes, a larger engine, and extra standard and optional features for '03. Among the least-expensive cars on the market, Rio offers a sedan and wagon, the latter called Cinco. Both have a 4-cyl engine that goes from 1.5 liters and 96 hp to 1.6 liters and 104 for 2003. Manual transmission is standard, automatic optional. Options include ABS, air conditioning, power steering, and power door locks, and now power windows and fog lights. Side airbags aren't offered. Added as standard for '03 are rear-seat heater ducts, cupholders in the front-door map pockets and, for Cinco, a CD player. Kia claims engineering updates reduce noise and vibration, suspension alterations improve ride comfort, and that larger front brakes increase stopping power. Kia is owned by Hyundai and both South Korean automakers share warranty coverage: 5-years/60,000-mi. basic, 10/100,000 powertrain, 5 years/unlimited roadside assistance.