Transportation energy efficiency

Improving fuel economy standards in light-duty vehicles (LDVs) would help reduce transport sector emissions.

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  • ~12%
  • Road transportation represents ~12% of all anthropogenic GHG on a CO2-equivalent basis.

Emissions

Global greenhouse gas emissions – share of total (2019).

Background

By improving fuel economy, vehicles can travel more miles per gallon of fuel consumed, reducing the amount of carbon dioxide released into the atmosphere.

  • Vehicle
  • fuel efficiency reduces CO2 exposure.

Improving LDV fuel economy is an important complement to efforts to increase EV penetration.

  • Improved fuel economy
  • complements an increase in EVs.

Source: Climate Watch; World Resources Institute; Our Word in Data; IEA

Current State

The majority of historical improvements in LDV fuel economy have been driven by stricter government standards.

Despite significant improvements in engine efficiency, fuel economy has not improved at a similar rate due to increasing vehicle weight.

The consumer preference for SUV models has been a global trend, particularly in the U.S. and China.

Solution Details

Fuel economy is improved by maximizing the energy efficiency of the vehicle's engine and drivetrain, reducing internal friction, optimizing aerodynamics, and minimizing weight.

Government policy will be a significant lever in improving LDV fuel economy, as will advanced engine technologies and shifting consumer preferences toward smaller, lighter vehicle models.

Other Solutions

CCUS in electricity & industry

CCUS in electricity & industry

Scaling renewables

Scaling renewables