Why is the coolant leaking from the hose where it connects to the cabin in my 2001 Astra hatchback?

Coolant leaking from the hose where it connects to the cabin in your 2001 Astra hatchback could be due to a few reasons, such as a worn or damaged hose, a loose clamp, or a faulty connection. Over time, hoses can become brittle and develop cracks, leading to leaks. Additionally, if the clamp securing the hose is loose or corroded, it may not hold the hose tightly enough, causing coolant to escape. It's important to inspect the hose and connections for any visible damage and replace or tighten them as necessary.