To estimate the price of the 2018 Renault Koleos I4 2.5L LE (Top) with 75000 km mileage, I started with the new car price of the 2025 Renault Koleos 2.5L LE (4WD) which is SAR 131250. Assuming a 10% depreciation per year, the car would depreciate approximately 50% over 5 years (10% per year compounded). This results in an estimated depreciation of around SAR 65625. Subtracting this from the new car price, the estimated value is SAR 65625. Given the car's good condition and European specs, this estimate seems reasonable.