AUDI A7 Sportback 4G8 Quattro 3.0 BITDI Automatic 8 Speed Gearbox NVF 2014. This Audi A7 sportback Quattro 3.0 BI-TDI automatic 8 speed gearbox is fully functional and working perfectly. This gearbox comes with the torque as pictured. Gearbox code is NVF.