To estimate the price of the 2021 Kia K5 GDI I4 2.5L LX (Base), I first considered the selling price of a similar 2022 Kia K5 I4 2.0L LX (Base) with 112,400 km mileage, which sold for SAR 52,000 in October 2024. This car has a smaller engine and is a year newer, but it was in average condition. The target car has a larger engine and is in good condition, which could increase its value. Next, I looked at listed prices for similar 2021 models. A 2021 Kia K5 I4 2.5L LX (Base) with 119,000 km was listed for SAR 65,000, and another with 62,000 km was listed for SAR 57,000. These listings suggest a range, but they are higher than the selling price, indicating they might not reflect actual market value. Considering the selling price of the 2022 model and adjusting for the larger engine and better condition of the target car, I estimate the market price to be slightly higher than the 2022 model's selling price but lower than the listed prices for 2021 models.