The MINI plant in Oxford is one of the biggest in the UK, building over a thousand cars a day. In this episode James tests his wheel fitting skills on the assembly line and learns how to engineer the sound of a car door. Kate gets to the bottom of how manufacturers test car seats and Ant heads to Germany to put his faith in a driverless car on the autobahn.

In this episode of Building Cars James races against the clock on the production line and embraces the Japanese philosophy of Kaizen. Kate heads to Norway to discover why the electric car is King of the Norwegian road and Ant learns why loading a triple decker car transporter requires nerves of steel.

James makes friends with an army of diligent robots and busts the myth that British manufacturing is dead. Kate sees if she has what it takes to work on the assembly line and Ant explores the history and heritage of one of the most iconic cars ever built.