The S-Class stable includes the S350 BlueTEC, S400 Hybrid, S550 (available with rear-wheel or all-wheel drive), S600, S63 and S65. Virtually every comfort and convenience item comes standard, with a huge option list that allows the owner to personalize their vehicle. Safety features include multiple airbags, stability control, tire pressure monitoring and Pre-Safe accident-readiness. The top-of-the-line S600 is powered by a twin-turbo V12 engine mated to a heavy-duty five-speed automatic. Equipped with exceedingly high levels of standard equipment, the S600 has advanced features such as front and rear automatic climate control, Parktronic front and rear parking radar system, and Distronic radar-controlled cruise control. For the performance oriented driver, Mercedes offers two models; the S63 AMG and the S65 AMG. The S63 AMG features a 5.5-liter bi-turbo V8 engine. For the ultimate performance S-Class, the S65 AMG provides a bi-turbo 6.0-liter V12 engine. Both enhance their sporting aspirations with features such as 20-inch performance tires and AMG-specific bucket seats. Specially tuned computer-controlled ABC active suspension system with AMG shock absorbers delivers decidedly sharper handling characteristics. The S-Class range receives a new S350 BlueTEC model for 2012. The S350 BlueTEC features a 3.0-liter turbo diesel engine and all-wheel drive. The S550 receives a new 4.6-liter direct-injection V8.