Hyundai's First Direct-Injection 4-Cyl Engine Unveiled, Replaces V6 in Next Sonata

Hyundai has officially unveiled its new direct-injected four-cylinder, which Hyundai claims delivers more power and a 10 percent improvement in fuel economy.

The 2.4L Theta II GDI four-cylinder took four years to develop and will debut in the 2011 Sonata. The engine officially puts out 198 horsepower and 184 lb-ft. of torque. The Theta II engine delivers 7-12 percent more torque across its rev range compared to a conventional engine. The engine is expected to see a 10 percent improvement in fuel economy, although final numbers have not been released. In addition to the direct-injection technology, the engine also gets variable valve timing on both camshafts.

When the 2011 Sonata debuts next year a V6 will not be offered.

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