ABSTRACT
Many modern vehicles come with a means for providing feedback and advice to the driver about fuel efficiency, be they traditionally powered (i.e., by internal combustion engine [ICE]) or powered by more novel means (e.g., hybrid, electric, hydrogen). A fairly wellestablished finding is that the way in which a car is driven significantly affects the amount of fuel used-a difference that varies from around 15% in ICE vehicles (Evans, 1979; Waters and Laker, 1980) to as much as 30% in electric vehicles (Bingham et al., 2012). To support such fuel-efficient driving styles would clearly be a worthwhile activity; however, there exists great variance in the ways different vehicle manufacturers go about this, in terms of the actual type of information presented, and in the way it is presented.
