The 300 is available in rear-wheel or all-wheel drive, with V6 or V8 power. The 3.6-liter V6 sends power through a five-speed (Base) or eight-speed (Limited and S) transmission. S V8 models use a 5.7-liter V8 and five-speed automatic transmission. The performance oriented SRT8 receives a mammoth 6.4-liter V8 and five-speed automatic transmission. Standard safety features include antilock disc brakes, active-headrests, driver knee, seat-mounted side and overhead curtain airbags, traction control, stability control and ignition disable. Available features include heated and ventilated leather front bucket seats, navigation system, Bluetooth and automatic dual-zone climate control. The 300 receives several new trims and all-wheel drive for 2012. The new trims are; Limited, S, and SRT8 (rear wheel drive only).