Three budget off-roaders face a brutal 1,200-mile winter expedition through the Scottish Highlands, testing the limits of budget engineering against sub-zero temperatures. From snapping tow ropes in deep snow to exploring the hallowed halls of the Grampian Transport Museum, the journey reveals which of these aging 4x4s is truly built to survive. Discover why the most expensive build isn't always the one that gets you home when the terrain turns vertical.