Independent study is The purpose is to 1. Factors influencing the decision not to install gas in the car. 2. Study by demographics, consumer behavior who decide not to install gas in the car 3. Cognitive basics of installing gas in the car. The sample used in this study was that people in Chanthaburi. The decision not to install gas in the car, according to a sampling of 400 samples. The study used interviews Questionnaires were analyzed using descriptive statistics and frequencies, percentages and averages and using the chi-square test.