Redesigned gauges feature a blue backlight, and a touch-screen navigation system, optional on the Limited trim level only, includes satellite radio capability. Bluetooth capability is available as an optional unit, separate from the audio or navigation system, and all models include both a USB port along with an auxiliary input jack. An optional USB adaptor cord allows integration of an iPod, and chrome interior door handles are standard on the Limited trim. The 2.4-liter G4KC Theta engine was rated at 6000 rpm and ( for PZEV model), 2.0-liter G4KA Theta engine was rated at 6000 rpm and at 4250 rpm and the 3.3-liter Lambda V6 was rated at 6000 rpm and at 4500 rpm. The Diesel engine (D4EA) variant is available for the UK market with the option of 4-speed automatic or 6 speed manual, and was introduced into the Australian market for the first time, replacing the V6 option. The base model GLS is available with a manual five-speed transmission. GLS, SE and Limited models feature a newly available, manually shiftable five-speed automatic transmission marketed as "Shiftronic". There are minimal changes for the 2010 model, which includes the optional navigation system on the SE as opposed to being a Limited-exclusive option, and the V6 engine is no longer offered on the GLS model. Sonata Ling Xiang Beijing Hyundai launched a redesigned Sonata called the Ling Xiang, also known as NFC Sonata, for the Chinese market. Production commenced in December 2008 for the 2009 model year. This variant has an updated exterior and revised rear seating. Following Hyundai's success with their Hyundai Elantra Yue Dong, Ling Xiang was created specifically to target the Chinese market. Hyundai first introduced this car to the market at The 6th China Guangzhou International Automobile Exhibition in 2008. Engine and transmission choices include the 2.0 litre and 2.4 litre Theta engine paired to 3 gear separate gearboxes, a 5 speed manual, 5 speed automatic and 4 speed automatic. Trim levels consisted of the 2.0GL Manual and Automatic, 2.0 GLS Manual and Automatic, 2.0 DLX AT, 2.0 Top, 2.4 GLS, 2.4DLX AT and 2.4 Top. Sixth generation (YF; 2009) Hyundai commenced development of the YF Sonata in 2005, with a development cost of ₩450 billion (US$372 million). In the Australian, New Zealand, Singapore, and Colombian markets, the YF is retailed under the name Hyundai i45, following the alphanumeric i-series nomenclature established by Hyundai in these markets.