The 2021 AASA Replacement Rates Report contains data tables showing the percentage of private vehicles receiving specified maintenance, which can be used to calculate product durability, market size estimates and service job variables. It also features a revamped design that highlights major trends across all part categories to easily gather insights. The replacement rate is the percentage of all privately-owned light vehicles on the road that received a specific repair or service job. AASA’s replacement rates are derived from an IMR, Inc. survey of more than 100,000 households maintaining a total of ~250,000 light vehicles each year. Trends in replacement rates over time are very important, and the AASA Replacement Rates Report is the only aftermarket publication that depicts a five-year trend in replacement rates.
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