The vehicle was badged as a "Sonata" in Eastern Europe, just as in North America and South Korea. Sales of the YF Sonata in South Korea began on 2 September 2009, before the production vehicle's South Korean launch. The US version of the sixth generation Sonata was unveiled at the 2009 Los Angeles Auto Show, with sales beginning in 2010 for the 2011 model year. The Sonata was the second vehicle, after the Tucson, to carry Hyundai's then-radical "Fluidic Sculpture" design language. For the US market, the sixth generation Sonata boasted a direct-injection 2.4-liter four-cylinder engine. This new engine improves fuel economy and produces a maximum of at 6300 rpm and at 4250 rpm. It is part of the Theta II engine lineup. Furthermore, a timing chain was introduced along with a new six-speed automatic transmission. This Sonata is built with hot-stamped ultra high-strength steel. In South Korea, the YF Sonata is delivered with a 2.0-liter Theta II MPi gasoline engine (Max output , Max torque of 20.2 kg·m). Its fuel economy has improved 11%. A direct-injection 2.4-liter four cylinder engine and a 2.0 turbocharged engine was available. Exclusive options for the Korean model includes a three-piece panoramic moonroof, electroluminescent instrumentation, fender-mounted turn signals, and a special Premier Beige model. Upgraded audio uses a JBL system, and certain navigation packages come with a telecommunications system with Hyundai's Mozen system. For the North American model, GLS, SE, and Limited trims were offered. A six-speed manual transmission came standard on the GLS, and a six-speed automatic is available. Differences with the Korean model include differences with the GLS model, which features a body-colored grille and door handles, and different steel wheel covers. Limited models and optional stereos on the GLS and SE now have "Dimension" audio systems, and the Limited trim has an optional Infinity stereo. Limited models have standard front and rear heated seats, the first such offering in this segment. Additional differences include different cupholders, a redesigned straight leather shifter as rather than the gated one on Korean models, and an additional exterior color choice, Indigo Blue Pearl. The 6th Hyundai Sonata was awarded Top Safety Pick from Insurance Institute for Highway Safety (IIHS) in the United States. The Sonata 2.0T was released in December 2010. For the 2012 model year, Hyundai's new Blue Link system was offered as standard equipment, and the Limited model included a new standard three-piece