Indonesia, the world's largest archipelago, faces a significant environmental challenge: CO2 emissions. Indonesia's CO2 emissions have a significant impact on global climate change, ranking as the sixth most polluting country on the planet in 2023. This research conducted a characterization of the variables CO2 emissions and vehicles in use, a normality test was applied to the data by Shapiro Wilk analysis, a Pearson correlation test that resulted in a correlation of r= 0.9143, which means that there is a strong correlation between the two variables, indicating a positive relationship between the variables, growth in one variable is associated with growth in the other variable. A future projection was made using the least squares model, year by year, resulting in CO2 emissions of 669.7 Mt in 2024, which will increase until 2030 to 766.4 Mt, putting at risk the global environmental goals of reducing CO2 emissions and maintaining the global temperature of the planet at less than 1.5 degreesC.