I started by looking at the selling prices of similar cars. The most relevant data points are the 2015 Audi A3 I4 1.4L Turbocharged 35 TFSI (Base) with similar mileage and condition. One sold for SAR 24000 on 2023-09-28 and another for SAR 27000 on 2023-10-17. These are the most recent and relevant data points. The listed prices for similar cars are SAR 27000 and SAR 24000, which align with the selling prices. Considering the car's condition and mileage, I used the lower end of the selling prices as a more accurate reflection of the market value.