Complex sentence: However, The NuVinci is a variant on the "Tilting-ball drive" type of continuously-variable transmission (CVT), and the efficiency of "Tilting-ball drive" type CVTs is typically in the range of 70% to 89%.
Split into simpler sentences: However, The NuVinci is a variant on the "Tilting-ball drive" type of continuously-variable transmission (CVT). The efficiency of "Tilting-ball drive" type CVTs is reported to be typically in the range of 70% to 89%.