After finishing the 1990s with only subcompacts cars and an SUV, Kia introduced a large compact four-door, front-wheel-drive sedan named Optima for 2001. The Optima was based on the Hyundai Sonata, produced by Kia's South Korean corporate parent. Sales of the five-passenger "flagship" sedan began late in 2000. Both LX and uplevel SE Optimas used the Sonata's four-cylinder and V6 engines. The four-cylinder teamed with a manual gearbox or four-speed automatic transmission, but the 2.5-liter V6 was automatic-only. Optimas with V6 power had Tiptronic technology, with a separate gate for manual shifting, when desired. Front side airbags were standard. Antilock braking and leather upholstery were optional with the V6 version, though Optima did not offer the Sonata's available traction control. Optimas with the V6 also had rear disc brakes in place of drums. As it did with other products, Kia promoted the Optima's low price and abundant standard features, compared to Japanese-brand competitors. At 106.3 inches, the Optima's wheelbase was nearly identical to the Honda Accord. Overall, the Optima was 3 inches shorter than an Accord, but about the same as a Nissan Altima. Optimas had a fully independent suspension and either 14- or 15-inch tires. Standard LX equipment included air conditioning, power windows and locks, power mirrors, and variable intermittent wipers. The SE added alloy wheels with Michelin tires, fog lights, a moonroof, keyless entry, a cassette/CD player, and an eight-way power driver's seat.