{"aspect_id":"AS80","aspect_name":"fuel-efficiency","aspect_reference":"NIST Special Publication 1038","aspect_symbol":null,"name":"fuel-efficiency mile per gallon (U.S.)","scale_id":"SC828","scale_name":null,"scale_symbol":null,"scale_type":"ratio","symbol":null,"unit_id":"UN167","unit_name":"mile per gallon (U.S.)","unit_reference":"https://www.nist.gov/pml/special-publication-811/nist-guide-si-appendix-b-conversion-factors/nist-guide-si-appendix-b8#M","unit_symbol":"mi.gal-1"}