Well my starter is a 10 tooth which according to minispares is wrong. However I'm pretty sure it's the original due to the cars history and the date code.
But it's something to bare in mind if I ever have starting issues.
Nope. It is good to know so you replace like with like. The Metro had 10t starters you could easily have had an engine swap and numbers swapped or updated....
little things like this are always good to check when able a# it can save money and agro later.