It is evident that vinegar acts as an active water spot remover for cars, but sometimes people have questions like using vinegar on car paint! Well, the vinegar might be an excellent solution to remove the water spots effectively, but it is also a concern because it may somehow leave etch spots on the area where it is used, and thus, the look of the car would still be affected. Therefore, it is recommended that either you use a professional water spot remover or you may have to polish the vehicle again to bring back the original essence of the car paint.