{"query_echo":{"q":"","filters":{"analysis_type":["marginal cost-marginal benefit (MCMB) analysis"]},"warnings":[{"code":"facet_value_not_in_vocabulary","message":"Value 'marginal cost-marginal benefit (MCMB) analysis' for facet 'analysis_type' is not in the controlled vocabulary."}]},"total":{"value":1,"relation":"eq"},"page":1,"page_size":20,"self":"https://climateinsightsdirectory.org/api/v1/search?analysis_type=marginal+cost-marginal+benefit+%28MCMB%29+analysis","stability":"beta","ai_marking":{"digital_source_type":{"uri":"http://cv.iptc.org/newscodes/digitalsourcetype/trainedAlgorithmicMedia","name":"Created using Generative AI"},"notice":"Summary and key insights are generated using artificial intelligence."},"results":[{"id":"ucs-001198","url":"https://climateinsightsdirectory.org/document/ucs-001198","title":"How Cost-Effective Technology Can Increase Vehicle Fuel Economy","publisher":{"name":"Union of Concerned Scientists","organization":"union-of-concerned-scientists"},"document_type":"report","language":"en","date_published":"2008-09","source_url":"https://www.ucs.org/sites/default/files/2019-09/ucs-setting-the-standard.pdf","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"The Union of Concerned Scientists (UCS) analyzes various technology studies to demonstrate that U.S. passenger vehicles can cost-effectively reach a fleet average of approximately 40 mpg by 2020 using conventional technology and over 50 mpg by 2030 with hybrid-electric technology. The report criticizes the National Highway Traffic Safety Administration's (NHTSA) historical use of marginal cost-marginal benefit (MCMB) analysis, which often undervalues environmental and security benefits, and recommends a total cost-total benefit (TCTB) approach to set more aggressive standards.","ai_generated":true,"unit":"ucs-001198#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"U.S. passenger vehicles could cost-effectively achieve a fleet average fuel economy of approximately 40 mpg by 2020 using conventional technology alone, and more than 50 mpg by 2030 when hybrid-electric technology is fully deployed.","ai_generated":true,"unit":"ucs-001198#insight-1","date_modified":"2026-10-23"},{"text":"The Union of Concerned Scientists' total cost-total benefit (TCTB) analysis indicates that a fleet average fuel economy between 39 and 55 mpg is both achievable and cost-effective.","ai_generated":true,"unit":"ucs-001198#insight-2","date_modified":"2026-10-23"},{"text":"The report argues that the National Highway Traffic Safety Administration (NHTSA) has used a flawed marginal cost-marginal benefit (MCMB) analysis that produces conservative results and has previously valued reduced heat-trapping emissions at zero dollars.","ai_generated":true,"unit":"ucs-001198#insight-3","date_modified":"2026-10-23"},{"text":"Implementing more aggressive fuel economy standards beyond the 35 mpg minimum could significantly increase oil savings and emissions reductions; for example, a 47 mpg standard by 2030 could save 445 billion gallons of fuel through 2030.","ai_generated":true,"unit":"ucs-001198#insight-4","date_modified":"2026-10-23"},{"text":"The automotive industry has historically increased vehicle weight and horsepower rather than using engineering improvements to increase fuel economy; today's average vehicle is over 900 pounds heavier than it was 20 years ago.","ai_generated":true,"unit":"ucs-001198#insight-5","date_modified":"2026-10-23"},{"text":"The report recommends that NHTSA treat the 35 mpg fleet average as a minimum for 2020 and target at least 50 mpg by 2030.","ai_generated":true,"unit":"ucs-001198#insight-6","date_modified":"2026-10-23"},{"text":"U.S. passenger vehicles are a major source of global warming pollution, emitting more CO2 than the entire economies of all but two other countries as of 2004.","ai_generated":true,"unit":"ucs-001198#insight-7","date_modified":"2026-10-23"},{"text":"The report identifies several cost-effective technology categories for improving fuel economy, including engine and drivetrain efficiency, reducing auxiliary loads, and reducing aerodynamic drag or rolling resistance.","ai_generated":true,"unit":"ucs-001198#insight-8","date_modified":"2026-10-23"}],"climate_tags":["carbon dioxide emissions","climate change","energy security","transport industry","biofuel","electric vehicle"],"geography_discussed":["Canada","Mexico","People's Republic of China","India"],"frame_perspective":[],"analysis_type":["total cost-total benefit (TCTB) analysis","marginal cost-marginal benefit (MCMB) analysis"]}]}