U.S. inflation Month-over-Month (MoM) in used cars tracks short-term price changes for pre-owned vehicles. This measure can be historically volatile, reflecting rapid fluctuations in the cost of purchasing a used car. The computation is based on the Consumer Price Index (CPI) produced by the Bureau of Labor Statistics (BLS). The BLS selects a sample of used car prices, gathers data from various sources, and calculates the CPI, which serves as a crucial indicator of inflation trends.