Performance and Design: Taken from the Automotive Performance, Execution and Layout (APEAL) study, this measure is based on owner satisfaction with vehicle Performance, Style, Features and Instrument Panel, and Comfort.
Quality: Taken from the Initial Quality Study (IQS), which looks at owner-reported problems in the first 90 days of new-vehicle ownership, this score is based on problems that have caused a complete breakdown or malfunction, or where controls or features may work as designed, but are difficult to use or understand.
Dependability: Taken from the Vehicle Dependability Study (VDS), which looks at owner-reported problems in the first 3 years of new-vehicle ownership, this score is based on problems that have caused a complete breakdown or malfunction of any component, feature, or item (i.e., components that stop working or trim pieces that break or come loose).
Predicted Reliability: The predicted reliability score is based on trending the past three years of historical initial quality and dependability data from J.D. Power's automotive studies, specifically the Vehicle Dependability Study (VDS) and the Initial Quality Study (IQS).
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Green Efficiency: The green efficiency ratings are drawn from the Automotive Environmental Index, which combines publicly available U.S. Environmental Protection Agency (EPA) data with voice-of-the-customer information related to fuel economy, air pollution and greenhouse gases. Voice-of-the-customer data is also used to help determine the relative importance of these environmental factors.
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