The LS 500's 3.5-liter V6 engine has an updated piston design aimed to lower emissions and reduce NVH when the engine is cold while the hybrid variant received several hardware and software upgrades improving the acceleration of the vehicle. The interior of the LS has been further refined with revised seats, touch points, higher-resolution rearview mirror and updated leather options. The facelifted LS uses a 12.3-inch touchscreen infotainment system[58] instead of the mouse-based implementation found in prior model years.