Kia Optima are the hybrid badging, application specific wheel design, a lowered ride height by approximately , and the availability of a special light platinum graphite paint color. It also utilizes an active shutter system behind the upper grille, allowing the car to redirect airflow when the gas engine's heat levels allow (such as when the car is operating in EV mode to improve aerodynamics, or to assist in more rapid warming up of the gas engine). In September 2011, the Optima Hybrid set a Guinness World Record for "Lowest Fuel Consumption in a Hybrid Gasoline Vehicle" while driving across the continental United States for 14 days, starting from the Kia factory in West Point, Georgia. In its 7,899-mile drive across the 48 states, the car recorded an average of 64.55 miles per gallon while consuming a total of five and a half tanks of gasoline. In order to qualify for the record, the car had two people and luggage throughout the entire trip. Fourth generation (JF; 2015) The 2016 Kia Optima went on-sale towards the end of 2015. It shares a platform with the 2015 Hyundai Sonata, and offers a new design, with new features and enhancements. As with the previous-generation Optima, the new model was designed by Kia's Chief of Design, Peter Schreyer. Unveiled at the 10th Seoul Motor Show in April 2015, the new K5 was released in the South Korean market on 15 July 2015. For the Malaysian market, the fourth generation Kia Optima was launched in May 2017 powered by the Theta II 2.0 liter turbocharged four-cylinder gasoline engine with a 6-speed automatic transmission. Sportswagon At the 2016 Geneva Motor Show, Kia revealed the Sportswagon variant of the Optima. Developed mainly for the European market by Kia's European design team, Kia says the model represents a significant growth opportunity in Europe, as two thirds of all models sold in the class are estates, rising to three quarters when looking purely at fleet sales. In its case, Kia says the estate could outsell the sedan version six to one. Powertrain Plug-in hybrid A plug-in hybrid variant was unveiled at the 2016 Chicago Auto Show. The Kia Optima PHEV shares the powertrain of the Hyundai Sonata PHEV, and like its sibling, it has a 9.8 kWh battery pack that delivers an all-electric range of , but the Optima plug-in hybrid has a lower drag coefficient, which at