To estimate the price of the 2019 Nissan Sunny I4 1.5L S A/T (Base) with 159500 km mileage, I first considered the selling prices of similar cars. A similar car with 130000 km mileage and average condition sold for SAR 25000 in May 2024. Given the target car's higher mileage, its value would be slightly lower. The listed prices for similar cars range from SAR 20000 to SAR 35500, with the most relevant being SAR 26500 for a car with 130000 km and SAR 27500 for a car with 157896 km. Considering the selling price and the listed prices, the estimated market price for the target car is slightly below the SAR 25000 selling price due to higher mileage and average condition.