This chart shows the Consumer Price Index (CPI) for motor fuel in the Western U.S. in size class A cities, covering the period from 1977 to October 2024. It provides insights into the price fluctuations of motor fuel, such as gasoline, in this region. The CPI is reported in index format (not monetary values or percentages), highlighting long-term trends in motor fuel costs and reflecting the influence of factors like global oil prices, supply chain dynamics, and regional economic conditions.