To estimate the price of the 2016 Peugeot 508 I4 1.6L Turbocharged Allure (Base) with 155624 km mileage, I started by looking at the new car prices for the 2025 models. The Allure+ variant is priced at SAR 151800 and the GT Line at SAR 170200. Assuming a 10% annual depreciation, the 2016 model would have depreciated for 8 years. Using the Allure+ as a reference, the depreciation calculation is: 151800 * (0.9^8) = approximately SAR 65600. However, this is for a new car in excellent condition. Considering the car's average condition and higher mileage, I adjusted the price downwards. The listed price for a similar 2016 model with 136000 km is SAR 25500. Given the higher mileage and average condition of the target car, I further adjusted the price downwards to reflect these factors.