The IS 350 is propelled with authority, benefitting from a 306-hp 3.5-liter V6. It has VDIM electronic stability control that steps in very early to keep the driver out of trouble. More sophisticated braking and electronic stability systems augment its additional performance. Safety features include driver and front-passenger knee airbags. The brakes are large and effective four-wheel discs, clamped at the front by aluminum four-piston calipers. Augmenting the big brakes have ABS, Electronic Brake-force Distribution, and Brake Assist.New for 2007 is the X-Package a sporty performance package.