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Estimating the elasticities of gasoline demand: an instrumental variable approach

ABSTRACT This article uses a new identification strategy to estimate the demand for gasoline. I show that the monthly gasoline price is endogenous to gasoline demand at the state level, and that gasoline tax and domestic oil first purchasing price together are strong and valid instruments to correct for the endogeneity bias. In addition to estimating the price elasticity, this article also provides an estimate of the income elasticity. These updated estimates are critical factors in evaluating the environmental effect of gasoline tax and forecasting gasoline consumption.