Hyundai Sonata 2012 full specifications. Hyundai Sonata 2012 in excellent condition, fully equipped with all luxury and advanced features. Main specifications: Base engine 2.4L, 4-cylinder, 198 horsepower (200 horsepower in SE models). Higher performance engine (optional/available) 2.0L turbo, 4-cylinder, 274 horsepower. Interior and exterior features: Rear view camera, heated front and rear seats, sunroof.