Season 4

Clarkson, Hammond, and May take a break from cars and set out on an epic journey across Cambodia and Vietnam in boats. This adventure packed voyage sees the hapless trio experience thrills, spills and genuine danger as they try to navigate their way through the world’s most iconic waterway, the Mekong Delta.

The intrepid trio find themselves back on four wheels for their latest adventure. Armed with sports cars, Richard, James and Jeremy think they are in for a cushy road trip as they arrive on the exotic island of Reunion and race on the world’s most expensive piece of tarmac. But a bizarre challenge propels them to Madagascar where they must tackle the world’s toughest road.

Confined to the UK by Covid, Jeremy, Richard and James embark on a Lockdown Special to find out just why American 70s cars never took off in Britain. At the wheel of a Cadillac Coupe De Ville, a Lincoln Continental and a Buick Riviera in stunning Scottish surroundings, the three hosts undergo many mishaps and adventures before embarking on one of their toughest challenges yet.

Everyone's favourite trio are back and they're here to answer a very important question: What's going on with French cars? Join Clarkson, Hammond, and May as they investigate the wonderfully weird world of French cars on their latest Grand Tour adventure.