I started by examining the selling prices of similar cars. The most relevant data point is the 2013 Audi Q5 3.0SC V6 S Line with a selling price of AED 24000, sold in May 2024, which is a similar variant and condition. Another relevant data point is the 2013 Audi Q5 3.2L SC V6, sold for AED 33500 in June 2023, but it has a higher mileage. The 2015 Audi Q5 Sline 40TFSI 2.0L TC I4 sold for AED 35000 in March 2024, but it's a newer model. The accepted offer for a 2013 Audi Q5 3.0 Turbo TFSI V6 was AED 30000 in October 2023, which is a good reference point. Considering these data points, the estimated market price for the 2013 Audi Q5 Turbocharged I4 2.0L 40 TFSI S Line (Top) with 135000 km in average condition is likely around AED 28000.