The aim of this study is investigation enterprise resource planning ERP acceptance drivers by using path analysis. A sample of 309 employees among employees of Iranian car production companies were selected randomly. The data were collected by questionnaire and then analyzed using path analysis method. The findings showed that organizational support has a significant effect on readiness for change, perceived ease of use, perceived usefulness, and intention to use the system. Moreover, organizational commitment and innovation orientation positively influenced readiness for change and, readiness for change positively influenced perceived usefulness and perceived ease of use is significant and positive. Finally, perceived ease of use has a positive impact on perceived usefulness and these two variables have a significant and positive impact on intention to use of ERP systems.