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The use of plastic products nowadays almost comply all needs because of plastic products have advantages such as being more economical, flexible and lightweight. Yet, Environment and Sustainability become important issues for company and society. Companies must reproduce and recycle all plastic products related with that issues. CV Jordan Plastics in producing M500 bottles often produces reject products exceeding the target set by the company. This research was conducted to determine the current process capability in producing the M500 bottle, where the process capability index can be calculated from the results of control chart whose data is considered to be statistically controlled. Multivariate control chart can be used to control the quality of the process at CV Jordan Plastics, because the quality characteristics of the products are more than one and the controls must be carried out together. Correlated variables that are used in making multivariate control chart are different of thicknesses, leaks, and dents. The results of the T2 Hotelling control charts show that the process has not been controlled, because there are 4 observations that are out of control. From the Mason, Young and Tracy (MYT) decomposition results, it is obtained that the variables that cause observations to become uncontrolled are different of thicknesses and dents. After revised the control chart, it is known that the current multivariate process capability index is 0.79, which means the process is not capable yet and needs to be improved. The proposed improvement are given to solve the problem of different thicknesses is to position the die right in the middle so that the thickness on all sides is same and for dented conditions can be reduced by setting the temperature and blowing pressure according to the standard.