The XF lineup includes four models: base XF, Portfolio, Supercharged, and XFR. The base XF and Portfolio use a 385-hp 5.0-liter V8 engine. The Supercharged version utilizes the same 5.0-liter V8 and adds forced induction, which increases horsepower to 470. The XFR is powered by the supercharged 5.0-liter V8 engine and produces 510-hp. All models have an electronically controlled six-speed automatic transmission, featuring Jaguar Sequential Shift paddles. Safety features for all models include dual-stage front, seat-mounted side and side-impact curtain airbags, dynamic stability control, active head restraints, and a tire pressure monitoring system. The 2012 Jaguar XF receives a detailed interior and exterior refresh. Enhancements can be found by the new headlamp design featuring LED signatures, more upright grille, side vent design, pronounced "power bulge" hood, black rear valance, and revised tail lamps on the outside. On the inside a brighter instrument panel trim, new hard switches, improved graphics on the display, sportier steering wheel, and a completely new seat style featuring a "hoop" design element. Software enhancements include HD radio on all models, Interactive Voice control commands, DVD video player, upgraded audio system, and Hard Disk Drive based navigation system.