A data monitoring and analysis system suitable for performing real-time monitoring of vehicle information systems installed aboard a passenger vehicle fleet and methods for manufacturing and using same. The data monitoring and analysis system includes a loadscript system for establishing a communication channel with each vehicle information system. Continuously receiving performance data accumulated by the vehicle information systems, the loadscript system validates and parses the performance data and provides the resultant performance data to a database system for further analysis. The database system enables fleet operators to generate reports with consolidated performance data for the vehicle fleet, to stratify the performance data based upon one or more variables, and/or to drill down into subsets of the performance data to understand root causes underlying system performance. A large volume of performance data accumulated by the fleet thereby can be presented in a meaningful manner for rapid human intervention, as needed.