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UMTRI: fuel economy improvements are present throughout the sales-weighted distributions of same MY vehicles

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Building on research that shows average fuel economy has improved 4.5 mpg between model years 2008 and 2014, University of Michigan Transportation Research Institute (UMTRI) researchers Michael Sivak and Brandon Schoettle have documented sales-weighted distributions for the same model year vehicles (cars, pickup trucks, vans and SUVs).

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EPA to maintain light-duty vehicle GHG standards unchanged through 2025

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In an expected ruling, US Environmental Protection Agency (EPA) Administrator Gina McCarthy finalized her decision to maintain the current greenhouse gas (GHG) emissions standards for model years 2022-2025 cars and light trucks. mpg-e (if all reductions were achieved exclusively through fuel economy improvements).

EPA 150
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2011 edition of EPA Fuel Economy Trends report shows several advanced powertrain technologies making significant gains

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Light duty vehicle characteristics for seven model years. Conventional gasoline vehicles continue to account for more than 95% of all light-duty vehicles. Fuel economy improvements for the hybrid vehicles vary considerably from 5-10% for the larger, luxury hybrid vehicles to more than 40%. Click to enlarge. and from 2.6%

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Study concludes that automakers tweak vehicle fuel economy to qualify for more favorable treatment; focus on car notches

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In response to federal policies to boost gas mileage, manufacturers have changed vehicle weights, improved tire-rolling resistance and added aerodynamic features to push fuel-economy rates past government-mandated thresholds. mpg and 22.4 mpg) that lead to large changes in tax liability or the amount of a subsidy.

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Global Automakers calls on EPA to withdraw proposed determination on MY 2022-2025 GHG standards, get back in alignment with NHTSA, provide more time

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l/100 km), if achieved exclusively through fuel economy improvements. Global Automakers believes that the EPA’s acceleration of its proposed determination process so that it no longer aligns with NHTSA’s rulemaking was improper and contrary to the spirit and intent of the joint national fuel economy/GHG program.

EPA 150
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US EPA and NHTSA Jointly Propose New Fuel Economy and Greenhouse Gas Regulations for Vehicles

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Greenhouse gas and fuel economy levels under the EPA NHTSA joint proposed rulemaking. NHTSA is proposing CAFE standards for passenger cars and light trucks under 49 U.S.C. These standards would require them to meet an estimated combined average fuel economy level of 34.1 mpg in model year 2016.

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DOT, EPA Set National Standards for Fuel Economy and First Greenhouse Gas Emission Levels For Light-Duty Vehicles

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Final MY 2011 and MY 2012-2016 passenger car fuel economy targets, based on vehicle footprint. mpg for the combined industry-wide fleet (cars and light-trucks) for model year 2016. mpg for the combined industry-wide fleet (cars and light-trucks) for model year 2016. Source: NHTSA. Click to enlarge.