To estimate the price of the 2018 BMW X3 M Xdrive 30i I6 3.0L Twin Turbo xDrive M40i, I considered the listed prices of similar cars. The 2020 BMW X3 M with 71000 km is listed for AED 175000, the 2019 BMW X3 M 2.0L I4 with 90891 km is listed for AED 166000, and the 2017 BMW X3 M 2.0TC I4 with 110100 km is listed for AED 75000. Given that the 2018 model falls between the 2017 and 2019 models, and considering the mileage and condition, I adjusted the price accordingly. The 2018 model should be priced lower than the 2020 model but higher than the 2017 model. Factoring in the mileage and condition, I estimated the price to be slightly lower than the 2019 model.