To estimate the price of the 2020 Nissan Sunny I4 1.5L S A/T (Base) with 131000 km mileage, I considered the following data points: 1) A similar 2020 model with 72000 km sold for 36500 SAR on 2023-12-27. Adjusting for higher mileage, the price would be lower. 2) A 2019 model with 130000 km sold for 25000 SAR on 2024-05-08, which is a close match in terms of mileage and condition. 3) A 2020 model with 105000 km was listed for 33000 SAR but not sold, indicating a likely lower market value. 4) Considering the depreciation and the average condition, the estimated price should be between 25000 and 33000 SAR, closer to the lower end due to higher mileage.