Loaded LTZ model, 3.9L V6 SFI Flex Fuel engine, 4-Speed Automatic transmission with Overdrive, 4-Wheel Disc Brakes, 8 Speakers, Heated door mirrors, Heated front seats, Leather-Accent Seating, Power driver seat, Power Sunroof w/Sunshade, Power windows, and XM Radio. Creampuff! This beautiful 2010 Chevrolet Impala is not going to disappoint. There you have it, short and sweet! J.d. Power and Associates gave the 2010 Impala 4.5 out of 5 Power Circles for Overall Initial Quality Mechanical. It's the combination of advanced design and precision engineering that makes the 3.9L V6 SFI Flex Fuel engine such an impressive powerplant.