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Exchange Rate Changes Cause Conflicting Effects on Improving the Quality and Increasing Market Share of Eco-friendly Vehicles

환율 변화의 친환경 자동차 품질 향상과 시장점유율 확대에 대한 상충효과

  • Received : 2020.05.11
  • Accepted : 2020.08.04
  • Published : 2020.09.30

Abstract

This paper shows that when the exchange rate changes, there are conflicting effects on improving the quality and increasing market share of eco-friendly vehicles. In a vertically differentiated duopoly model consisting of high quality clean cars and low quality internal combustion engine cars, I set up a two-stage noncooperative game under perfect information that the quality levels and the prices of the cars are competitively determined. The vehicles are assumed to be produced in countries that use distinct currencies. When the exchange rate of the country that produces low quality cars rises, the producer prefers to intensify competition due to the relatively lowed cost, and the incentive for quality improvement arises from the intension of attempting to reduce the degree of differentiation of quality level. At this time, the clean car manufacturing firm tries to avoid competition due to weakened competitiveness, and increases the quality level to expand quality differentiation. However, in this case, the market share of eco-friendly vehicles shrinks. On the other hand, if the exchange rate changes in the opposite direction, the market share of eco-friendly vehicles is expected to increase, but the quality of both cars are deteriorated, causing a conflict effect.

본 연구는 생산비에 영향을 미치는 요인의 하나로서 환율이 변화할 때, 친환경 자동차의 품질 향상과 시장점유율 확대에 상충적 효과가 유발됨을 보인다. 우선 고품질의 친환경 자동차와 저품질의 내연기관 자동차로 구성된 수직적 차별화 복점 모형에서, 각 기업이 품질 수준과 가격을 순차적으로 결정하는 완전정보하의 두 단계 비협조게임을 설정한다. 그리고 각 종류의 자동차가 서로 다른 화폐를 사용하는 두 국가에서 구분되어 생산될 때, 내연기관 자동차를 생산하는 국가 화폐의 환율이 상승하여 그 자동차 생산비가 상대적으로 저렴해지면, 생산자는 경쟁 심화를 선호하게 되고, 품질 수준 차별화 축소의 시도로부터 품질 향상 유인이 발생한다. 이때 친환경 자동차 생산 기업은 경쟁력 약화로 인해 경쟁을 회피하려고, 품질 차별화 확대를 위한 품질 수준 제고의 동기를 갖는다. 그렇지만 이 경우 친환경 자동차의 시장점유율은 위축된다. 만일 환율이 반대 방향으로 변화하면, 친환경 자동차의 점유율 확대가 기대되지만, 두 자동차의 품질 수준은 모두 저하되는 상충적 효과가 유발된다.

Keywords

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