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In-Service Fuel Economy
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English
Abstract
Ford Motor Company surveyed Ford management personnel who drive Ford Motor Company lease vehicles. From the responses, in-use fuel economy data were computed on over 10,600 1978 model year cars. Analyses of the data are presented which include: fuel economy summary statistics; regressions of fuel economy ratings versus in-use fuel economy; measures of the ability of EPA ratings to rank in-use fuel economy; and the influence of car size class or transmission type on fuel economy regression and correlation. Wide ranges of fuel economies were found for each vehicle model type. The analysis shows no significant trend by car size class in the relationship between in-use fuel economy and metro highway fuel economy ratings.
Authors
Citation
South, N. and Raja, R., "In-Service Fuel Economy," SAE Technical Paper 790227, 1979, https://doi.org/10.4271/790227.Also In
References
- EPA and DOE Gas Mileage Guides
- Marks Craig “A Fuel Economy Measurement Dilemma -- Certification Testing vs. Customer Driving.” SAE Paper 780938 November 1978
- September 1977
- U.S. Department of Transportation, National Highway Traffic Safety Administration -- Rulemaking Support Paper Concerning the 1981-1984 Passenger Auto Average Fuel Economy Standards July 1977
- Cantwell E. N. et. al. “Projections of Motor Vehicle Fuel Demand and Emissions.” SAE Paper 780933 November 1978 Tests and Actual In-Use Experience, 1974-1977 Model Tear Cars,” SAE Paper 780037 February 1978
- McNutt Barry D. et. al. “A Comparison of Fuel Economy Results from EPA
- American Society for Testing and Materials 1916 Race Street, Philadelphia, Pa. “Recommended Practice for Dealing with Outlying Observations,”
- Ford Motor Company response to Proposed Rulemaking Regarding: Fuel Economy Labeling Procedures for 1979 and Later Model Year Automobiles Submitted to EPA March 31 1978
- EPA and DOE 1978 Gas Mileage Guide Second February 1978