This is believed to be the very first image of an undisguised 2010 Hyundai Sonata/i40, codenamed YF. The automakers all-new mid-sized sedan is set to replace the ageing Sonata sedan and is most likely to appear in its production form at the 2009 Seoul Motor Show in May!

The 2010 Sonata will initially be offered as a sedan, but we have been hearing rumors spreading around that Hyundai plans to bring a Sonata wagon variant to the market as well. Details on the Sonatas powertrain are yet to be confirmed, but we have learned that both, gasoline and diesel offerings will be available at launch.

Under the bonnet, we are expecting to find four-cylinder and six-cylinder petrol engines (2,4L Theta II and 3.3L V6) along with 2.0L and 2.2L CRDI diesel units that Hyundai just recently developed. Manual and automatic gear­boxes with 6-speed will be available across the Sonata range.

The afore-mentioned engines are expected to offer class-leading performance figures, while delivering low emission outputs and fuel consumption values compared to the current Sonata sedan.

Plans are already well underway to also bring the electric-hybrid Sonata to the market. Hyundai will introduce the Sonata hybrid in 2010 and will bring it to the States and other global markets.

Hyundais parallel hybrid system mates a 2,4L gasoline engine to the 40hp electric motor and 6-speed automatic transmission so the car can move via the gasoline engine, electric power, or combination of the two. The Sonata hybrid will also be the worlds first hybrid car to use the lithium polymer battery pack.

hyundai-sonata-yf-2010-rendering1.jpg

While Hyundai has not officially released any debut information, we have learned that the 2010 Hyundai Sonata/i40 will most likely appear at the upcoming Seoul Motor Show in May, where it will make its official domestic debut.

hyundai-2010-spy.jpg   hyundai-2010-spy1.jpg   hyundai-2010-spy3.jpg

2010 Hyundai Sonata comparisson:

hyundai-sonata-yf-2010-rendering11.jpg