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2026. 6. 30. 작업
What causes a 20% difference in fuel economy between winter and summer?
Your fuel economy change is caused by the fact you're not using the same fuel. Fuel changes twice per year from summer blend to winter blend and back again causing a change in the Reid Vapor Pressure (RVP). In summer, the hotter temperature evaporates liquids easier causing more pollution, so it is blended to lower the RVP. This blend is more costly to produce. While in the winter time, the RVP can be much higher so additives such as butane are used. While this lowers the manufacturing cost, it also burns more quickly resulting in a hit on the MPG fuel economy.
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