To estimate the price of the 2016 Chevrolet Impala V6 3.6L LTZ (Top) with 86000 km mileage, I considered the following data points: 1. A 2016 Impala LTZ (Top) with 180000 km sold for 57500 SAR on 2024-06-01. Given the lower mileage of the target car, it should be valued higher. 2. A 2016 Impala LT (Base) with 153000 km sold for 42500 SAR on 2024-02-04. The LTZ trim is higher, and the target car has significantly lower mileage, suggesting a higher value. 3. A 2016 Impala LT (Base) with 214000 km sold for 42000 SAR on 2023-10-13. Again, the LTZ trim and lower mileage of the target car indicate a higher value. 4. A 2016 Impala LTZ (Top) with 86000 km is listed for 37500 SAR. This is a useful reference but likely lower than the actual market value. Considering these points, the estimated market price is derived by adjusting for the lower mileage and higher trim level of the target car.