The car in question is a 2018 Kia Stonic I4 1.6L (Diesel) Three (Mid) with 58500 km mileage. The only data point available is a 2019 Kia Stonic I4 1.6L (Diesel) Standard with 95000 km listed for SAR 58000. Given that the car in question is a year older and has lower mileage, we need to adjust the price accordingly. Typically, a car depreciates by about 10% per year. Therefore, the 2018 model would be approximately 10% less valuable than the 2019 model. Additionally, the lower mileage of the 2018 model adds value. Considering these factors, I estimate the price of the 2018 Kia Stonic to be slightly lower than the listed price of the 2019 model.