First, I considered the selling price of a similar car: a 2018 Hyundai Avante I4 1.6L with 168000 km mileage, average condition, and non-GCC specs, which sold for SAR 38000 on 2024-04-13. This car is one year older and has higher mileage compared to the target car. Next, I looked at the listed prices of similar cars. The closest match is a 2019 Hyundai Avante I4 1.6L (Diesel) Sport (Mid) with the same mileage and specs, listed for SAR 55500. However, listed prices are generally higher than selling prices. Another relevant listing is a 2018 Hyundai Avante I4 1.6L (Diesel) Standard with 80000 km, listed for SAR 42000, delisted on 2023-09-12. Considering the target car's average condition and higher mileage, I adjusted the price downwards. Finally, I factored in the depreciation and market trends to arrive at a fair estimate.