“Earlier this year, the Labor Department put greater importance on the shelter component of CPI, which accounts for more than a third of the overall figure and has been in the spotlight over "owners' equivalent rent." It also lessened its focus on things like used cars, which recently underwent its own methodology refresh. The survey last year incorporated third-party data to ease the burden on respondents, like information from the J.D. Power Information Network that measures changes in vehicle prices, further dividing investors on what should be factored into their decision-making. “