To estimate the price of the 2013 BMW 520 I4 2.0L Twin Power Turbo Standard with 176000 km mileage, I considered the following data points: 1) A 2012 model with 155500 km sold for 37000 SAR on 2023-11-11. 2) A 2013 model with 234000 km sold for 31500 SAR on 2023-12-17. 3) Another 2013 model with 271000 km sold for 32000 SAR on 2023-12-17. 4) A 2012 model with 197000 km sold for 35000 SAR on 2023-12-24. 5) A 2014 model with 147000 km in good condition sold for 55000 SAR on 2023-08-16. The listed prices for similar cars were 40000 SAR and 39000 SAR. Considering the average condition and mileage of the target car, I estimated the price by averaging the selling prices of similar cars, giving more weight to the 2013 models. The average selling price of the 2013 models is around 31833 SAR. Adjusting slightly for the lower mileage of the target car, I arrived at the final estimate.