We build a vehicle purchase and disposal model to analyze a policy that links a new electric vehicle (EV) purchase subsidy with a used gasoline vehicle scrappage requirement. We evaluate the policy based on changes in sales, scrappage, subsidy dollars spent, and emissions reductions. We find that linking a purchase subsidy with a scrappage requirement is expected to result in fewer new EV sales and carbon dioxide emissions reductions relative to a policy without linking. Our modeling reveals that these effects are due to trade‐in vehicle eligibility requirements and opportunity costs lowering additional participation in the linked policy. However, the linked policy significantly increases used vehicle scrappage and is more progressive than the unlinked policy. We find that emissions reductions due to additional scrappage are sensitive to how remaining miles of scrapped vehicles are replaced.

中文翻译：

---

电动汽车购置补贴是否应与报废要求挂钩？


我们建立了一个车辆购买和处置模型来分析将新电动汽车（EV）购买补贴与旧汽油车报废要求联系起来的政策。我们根据销售、报废、补贴金额和减排量的变化来评估政策。我们发现，与没有挂钩的政策相比，将购买补贴与报废要求挂钩预计会导致新电动汽车销量减少和二氧化碳排放量减少。我们的模型显示，这些影响是由于车辆以旧换新资格要求和机会成本降低了相关政策的额外参与度。然而，链接政策显着增加了二手车报废量，并且比非链接政策更具进步性。我们发现，额外报废带来的减排量对报废车辆剩余里程的更换方式很敏感。