To estimate the price of the 2017 Cadillac XT5 V6 3.6L AWD Luxury (Mid) with 83800 km mileage, I considered several data points. First, a similar 2018 model with 13600 km sold for AED 98500 in September 2023. Given the higher mileage of the target car, a downward adjustment is necessary. Next, a 2017 model with 53400 km had an accepted offer of AED 75000 in October 2023, and another 2017 model with 90000 km had an accepted offer of AED 60000 in April 2024. The target car's mileage is closer to the latter, suggesting a price closer to AED 60000-75000. Additionally, a similar 2017 model with 83800 km is listed for AED 69500, which aligns with the accepted offers. Considering these factors, the estimated market price is derived by averaging these values and adjusting for the target car's specific condition and mileage.