To estimate the price of the 2013 BMW X5 3.0L i6 TC 35i, I considered the following data points: 1) A 2012 BMW X5 3.0L I6 AWD with 90071 miles, similar specs, and condition sold for AED 21000 on 2024-06-01. Given the similar condition and specs, this is a strong reference point. 2) The same 2012 model with the same mileage and specs is currently listed for AED 21000, which aligns with the selling price. 3) A 2014 BMW X5 3.0 Twin Turbo I6 with higher mileage (123700 miles) and a different variant (40i) is listed for AED 80000, but this is less relevant due to the different variant and higher mileage. Considering the 2013 model year and slightly lower mileage (71000 miles), I adjusted the price slightly higher than the 2012 model sold price.