Inside the High-Tech Renault Production Line

China's automotive companies have accelerated their global expansion in recent years, leaving the competition struggling to keep up.

We explore what's driving Chinese brands' acceleration into international markets. And we look at how established carmakers are having to tighten their belts to compete with low-cost rivals.

Some claim Chinese cars are a security risk because they could, in theory, be hacked - but could they really be used to spy on their owners?

Presented and produced by Theo Leggett

(Picture: BYD Yangwang U9 electric supercar on display during 2025 China Mobility Show at Hangzhou International Expo Center in Hangzhou, Zhejiang Province of China, June 2025. Credit: Getty Images)