Consumer education regarding the costs of plug-in electric vehicles (PEV), particularly in comparison with similar gasoline vehicles, is important for adoption. However, the complexity of comparing gasoline and electricity prices, and balancing long-term return-on-investment from fuel and maintenance savings with purchase premiums for PEVs, makes it difficult for consumers to assess potential economic advantages of PEVs. Online vehicle cost calculators (VCCs) may help consumers navigate this complexity by providing tailored estimates of different types of vehicle costs for users and enabling comparisons across multiple vehicles. However, VCCs range widely and there has been virtually no behavioral research to identify functionalities and features that determine their usefulness in engaging and educating consumers and promoting PEV adoption. This research draws on a systematic review of available VCCs and findings from usability studies with three VCCs to articulate design specifications for effective VCCs.  

Key words: Electric vehicles, consumer adoption, cost calculators, usability, user experience