To estimate the price of the 2018 Nissan X-Trail I4 2.5L S AWD (5-Seater) (Mid) with 217000 km mileage in average condition, I considered the following data points: 1. A similar 2018 Nissan X-Trail I4 2.5L S 2WD (5-Seater) (Base) with 228000 km mileage in average condition sold for 45000 SAR on 2024-09-01. 2. A 2018 Nissan X-Trail I4 2.5L S AWD (5-Seater) (Mid) with 125000 km mileage in good condition sold for 56000 SAR on 2023-10-15. 3. A 2018 Nissan X-Trail I4 2.5L S AWD (5-Seater) (Mid) with 114000 km mileage in good condition sold for 60000 SAR on 2024-03-26. 4. A 2018 Nissan X-Trail I4 2.5L S 2WD (5-Seater) (Base) with 135000 km mileage in average condition sold for 40000 SAR on 2024-01-13. Considering the higher mileage and average condition of the target car, I adjusted the price downwards from the mid-trim AWD models in good condition and closer to the base models in average condition.