The car to be estimated is a 2017 GMC Terrain SLE V6 3.6L SLE2 (Base+). The most relevant data point is the 2015 GMC Terrain V6 3.6L SLE2 (Base+) with 161,000 km listed for SAR 28,000, as it shares the same engine and trim. The 2015 model with 118,000 km was listed for SAR 24,500. The 2019 GMC Terrain Turbo Charged I4 1.5L SLE2 (Base+) sold for SAR 65,000, but it is a newer model with a different engine. The 2016 I4 2.4L models sold for SAR 30,000 to SAR 32,000, but they have a smaller engine. Considering the 2017 model year and the V6 engine, the estimated price should be higher than the 2015 V6 listings but lower than the 2019 model. Adjusting for the 2017 model year and mileage, the estimated price is around SAR 35,000.