The Audi CTD engine is an advanced engine technology developed by Audi, which may stand for “Clean Turbo Diesel”. These engines typically combine high-efficiency fuel injection, turbocharging, and advanced emission control systems to achieve higher fuel efficiency and lower emissions.

Audi CTD engines may offer excellent power performance while maintaining high fuel economy. In addition, Audi may employ advanced driver assistance systems and intelligent technologies to provide a better driving experience and greater safety.