This document discusses how Accenture has developed proprietary econometric modeling techniques to determine the incremental sales impact of each component of an automaker's marketing mix. By analyzing over 150 companies, Accenture has found on average 14% of marketing budgets are ineffectively spent. Accenture piloted this approach with an automaker in South America and was able to determine which factors like advertising, pricing incentives, and product innovations most directly drove sales. This allows automakers to optimize their marketing spending. Accenture argues their approach provides a scientific, data-driven method to improve marketing ROI compared to traditional subjective methods.