The decline of the weak yen! Japanese automakers' profits may face significant pressure, with Toyota likely to be the biggest victim.

It has been noted that Toyota Motor Corporation and other Japanese automakers are facing risks of profit erosion, as the yen exchange rate has risen to its highest level in over six months. On Tuesday, the yen fell below the 153 yen mark against the dollar (i.e., over 1 dollar for 153 yen), reaching its highest level since February of this year. This puts pressure on many Japanese automakers that are heavily reliant on exports, as their profit forecasts are partly based on the assumption of a weaker yen. Toyota holds the most pessimistic view on exchange rates, setting its assumed rate at 1 dollar to 160 yen. The world's largest automaker stated in August that for every 1 yen rise in the yen's value, its annual operating profit would decrease by approximately 50 billion yen (equivalent to 326 million dollars). Japanese automakers are assessing the impact of the yen's strength. Exchange rate fluctuations are a source of uncertainty for Japanese automakers, highlighting the economic costs brought about by extreme currency volatility. A stronger yen diminishes the value of overseas earnings when repatriated to Japan, thereby harming companies that derive a large portion of their sales from the United States and Europe. Currently, the yen's performance has exceeded the assumptions of all Japanese car manufacturers except Nissan, which expects the yen to exchange at 150 yen against the dollar for the fiscal year ending March 2027. Toyota and Suzuki Motors have revised their currency forecasts upwards compared to May. Japanese automakers have long preferred to adopt conservative currency assumptions, which helps them meet or exceed expectations when announcing results. Additionally, many automakers produce vehicles and even parts close to the final sales markets, creating a natural hedge since production costs can be paid in the same currency. Toyota is better positioned to withstand the risks associated with adopting a weaker yen assumption. Its earnings are among the most diversified in the global automotive industry, encompassing financial services and other businesses, which provides it with additional operational flexibility to offset adverse currency fluctuations. Although a weaker yen has previously threatened to drive up domestic inflation and import prices in Japan, it has also provided breathing room for the countrys largest exporters, helping them cope with the pressures of U.S. tariffs, soaring oil prices, and supply chain disruptions. In late June, the yen exchange rate briefly fell to its lowest point since 1986, prompting the U.S. and Japan to conduct their first joint intervention in 15 years.