To estimate the price of the 2016 Mazda 3 1.6L i4 R Grade (Top) with 86100 km mileage, I considered several data points. First, I looked at the selling prices of similar cars. A 2016 Mazda 3 1.6L (Base) with 135000 km sold for 34000 AED on 2023-09-22, and a 2016 Mazda 3 1.6L (Mid) with 130000 km sold for 30500 AED on 2024-03-10. Given that the target car is a top variant with lower mileage, it should be valued higher. A 2017 Mazda 3 1.6L (Mid) with 57500 km sold for 32000 AED on 2024-07-01, and another 2017 Mazda 3 1.6L (Mid) with 87500 km sold for 31500 AED on 2024-07-23. These prices suggest a higher value for the top variant. Additionally, a dealer sold a 2016 Mazda 3 1.6L V with 70880 km for 33991.5 AED on 2024-05-11. Considering the lower mileage and top variant, the estimated price should be slightly higher than these mid-variant prices. The listed price of a similar car with the same mileage and variant is 31000 AED, which aligns with the selling prices. Therefore, I estimate the market price to be around 33000 AED.