To estimate the price of the 2015 Nissan X-Trail I4 2.5L S 2WD (7-Seater) (Base+), I considered the following data points: 1) A 2015 model with similar specs and 169076 km mileage sold for 49000 SAR in October 2023. 2) A 2014 model with similar specs and 144700 km mileage sold for 25000 SAR in February 2024. 3) A 2016 model with similar specs and 233000 km mileage sold for 34500 SAR in May 2024. 4) A 2016 model with similar specs and 126000 km mileage sold for 48000 SAR in March 2024. 5) The listed prices for similar 2015 models with higher mileage were 45000 SAR and 44000 SAR. Considering the car's higher mileage (229600 km) and average condition, I adjusted the price downwards from the higher selling prices of similar models.