James May makes friends with an army of robots and busts the myth that British manufacturing is dead. Joined by Kate Humble and Ant Anstead, James sees if they have what it takes to work on the assembly line before exploring the history of the Mini.

In the finale, James May tests his wheel fitting skills, Kate Humble learns how to test car seats and Ant Anstead heads to Germany. Back at the factory James and the team race against the clock to keep the car's production on track. Will it be finished?