Heated Leather Seats, Power Moonroof, Navigational System, Factory Auto-start, Push-button Engine Start-Stop, Bluetooth Connectivity, Ipod-Iphone connector, MP3 port, DSG (Direct Shift Gearbox), DSG gearboxes comprise two independent gearbox units. As they move through the gears, the dual-clutch mechanism allows the engine to engage with each of the two gearboxes in turn via two drive shafts. The dual-clutch gearbox permits an automatic gear change with no interruption in power flow. The gearbox is controlled via a mechatronics module, which houses the electronic control unit, various sensors as well as the hydraulic control elements in a single compact unit. The DSG dual-clutch gearbox features two driving programs: normal mode and sport mode. In Sport mode, the DSG holds on to the gears for longer, as well as shifting down earlier as necessary. However, gear changes can also be made manually. Tiptronic switches on the multifunction steering wheel make this action particularly sporty. Operation of the clutch is always fully automatic, however.