How do you drain a petrol tank on corsa sxi 2003?

To drain the petrol tank on a 2003 Corsa SXi, first ensure the vehicle is parked on a flat surface and the engine is off. Disconnect the fuel pump fuse to prevent the engine from starting, then locate the fuel tank drain plug or remove the fuel line from the fuel pump. Using a siphon pump or a similar device, carefully drain the petrol into an approved container. Always follow safety precautions and dispose of petrol according to local regulations.