To estimate the price of the 2018 Lincoln MKZ I4 2.0L Turbo Charged Reserve (Top) with 128913 km mileage, I started with the new car price for the 2025 model, which is SAR 171000. Given that cars depreciate by approximately 10% per year, I calculated the depreciation over 6 years (2018 to 2024). The depreciation factor is 0.9^6, which equals approximately 0.531. Applying this factor to the new car price: 171000 * 0.531 = 90801. Since the car is in good condition and has a mileage of 128913 km, which is slightly above average, I adjusted the price downwards by around 5% to account for the higher mileage. Therefore, the estimated price is 90801 * 0.95 = 86261 SAR.