The Genesis can be had with a 290-hp 3.8-liter V6, or a 385-hp (using premium fuel) 4.6-liter V8. Both engines send power to the rear wheels through a six-speed automatic transmission that features manual sequential shift capability. Mechanical safety features include traction control, stability control, and panic brake assist. The interior features a full compliment of airbags, electronic active front headrests that provide whiplash protection, and a tire pressure monitor. Luxurious leather seats, automatic dual-zone climate control and woodgrain trim are just some of the appointments this car offers that are typically only found in vehicles costing much more. The Genesis receives several notable changes for 2011. The 4.6-liter gains 10 horsepower to make 385 horsepower (using premium fuel). The 4.6 now features standard aluminum interior accents, driver information system with multimedia controller, smart cruise control, electronic parking brake, high intensity discharge Xenon auto-leveling headlights, adaptive front lighting system, cooled driver's seat, and a 17 speaker audio system.