This Website offers technical reports on US light duty automotive technology and fuel economy trends for model years 1975 through the present model year. A Fact Sheet, the main body of the report, and appendices are available in .pdf format. The latter two can also be downloaded as zipped WordPerfect files. Among other things, the report reveals that average fuel economy has declined consistently since the late 1980s and now stands at its lowest level since 1980. The primary source of this decline, the report states, is the increasing market share of light trucks, which have a lower average fuel economy than cars.
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