No Problem / No Problems

[jack]

Are these correct? What do they mean?
1. I have been using this car for ten years and I have no problems with it.
2. I have been using this car for ten years and I have no problem with it. (Does 'no problem' have the same meaning as #2 or does it mean 'no difficulty' or does it mean both?

Does #2 'no problem' also mean this or does it mean 'no difficulty'?
3. Could you do this for me? No problem. (This 'no problem' does not have the same meaning as #2 right?)

[Casiopea]

Originally Posted by jack

Are these correct? What do they mean?
1. I have been using this car for ten years and I have no problems with it.
2. I have been using this car for ten years and I have no problem with it. (Does 'no problem' have the same meaning as #2 or does it mean 'no difficulty' or does it mean both?

Does #2 'no problem' also mean this or does it mean 'no difficulty'?
3. Could you do this for me? No problem. (This 'no problem' does not have the same meaning as #2 right?)

1. I haven't had any mechanical difficulties with this car.
2. I like this car. Sam, on the other hand, has a problem with the car. Sam thinks the model is too old, and refuses to be seen driving it, and that causes a problem for Sam, but it doesn't cause a problem for me. I like the model.
3. That's not a problem, it won't cause me any trouble, the act is not difficult to accomplish.

4. Sam: Sorry. Pat: No problem. (Don't worry about it; it's no trouble at all)