The best time to buy a car from a dealer in Japan is during the fiscal year-end in March. Dealers often offer significant discounts to meet sales targets and clear inventory. Another ideal period is during the Obon holiday in August, when promotions are common. For second-hand cars in Yokohama, Japan, visiting dealers at the end of the month can yield better deals, as they aim to boost monthly sales. Additionally, consider purchasing after new models are released, as older models drop in price. Researching local dealerships and negotiating can help you secure the best deal on second-hand cars in Yokohama, Japan.