To estimate the price of the 2018 Nissan X-Trail i4 2.5L S 2WD (7-Seater) (Base+), I considered several data points. The most relevant comparable is a similar variant sold on 2024-04-25 for SAR 49000 with 126000 km. Given the target car has higher mileage (167000 km), I adjusted the price downwards. Other relevant data points include a 2018 S 2WD (5-Seater) (Base) with 135000 km sold for SAR 40000 on 2024-01-13, and a 2018 S AWD (5-Seater) (Mid) with 142000 km sold for SAR 65500 on 2023-10-06. Considering the higher mileage and the fact that the car is in good condition, I estimated the price to be slightly lower than the SAR 49000 benchmark.