BYD unveiled the Si Rui at the Shanghai auto show (Photo: BYD)

BYD will use Nuance speech technology to operate a range of functions in its new models.

The Chinese car and battery systems maker will use the software to operate functions such as radio, TV and DVD player as well as the navigation system in its new Si-Rui models.

BYD, which showed the new models and their infotainment systems at the Shanghai auto show in April, said voice technology is part of its strategy to bring new and innovative infotainment systems to the Chinese market.