To estimate the price of the 2018 Kia Sportage I4 2.0L Turbocharged (Diesel) EX (Mid) with 135000 km mileage, I first looked at the selling prices of similar cars. A 2018 Kia Sportage I4 1.7L Turbocharged (Diesel) EX (Mid) with 121050 km sold for SAR 53000 in April 2024. Given the 2.0L engine and similar trim, the target car should be valued slightly higher. Another 2018 Kia Sportage I4 2.0L LX (Base) with 40080 km sold for SAR 57000 in August 2023. Considering the higher trim and higher mileage of the target car, the price should be adjusted downwards. The listed prices of similar cars range from SAR 45000 to SAR 71000, with the most relevant being a 2018 Kia Sportage I4 2.0L Turbocharged (Diesel) EX (Mid) with 135000 km listed for SAR 56000. Taking into account the actual selling prices, the higher mileage, and the listed prices, I estimate the market price to be slightly lower than the listed price of SAR 56000.