To estimate the price of the 2018 Nissan X-Trail I4 2.5L S 2WD (7-Seater) (Base+), I considered the following data points: 1. A similar car with the same variant and 126,000 km mileage sold for 49,000 SAR on 2024-04-25. 2. Another similar car with 98,300 km mileage sold for 60,500 SAR on 2023-08-06. 3. A similar car with 160,600 km mileage sold for 53,000 SAR on 2023-12-29. 4. A similar car with 217,000 km mileage sold for 41,500 SAR on 2024-08-31. 5. A similar car with 228,000 km mileage sold for 45,000 SAR on 2024-09-01. Considering the mileage of 214,000 km and the average condition, I adjusted the price accordingly.