To estimate the price of the 2016 Audi A8 V6 3.0L Twin Turbo 60 TFSI (Top) with 99000 km mileage, I considered several data points. First, I looked at the selling prices of similar cars. A 2014 Audi A8 V6 3.0L with 231500 km sold for 49500 SAR, and another 2014 Audi A8 V8 4.0L with 116000 km sold for 72500 SAR. A 2016 Audi A8 V6 3.0L with 171000 km sold for 59500 SAR, and a 2015 Audi A8 V6 3.0L with 81000 km sold for 89000 SAR. A 2018 Audi A8 V6 3.0L with 104000 km sold for 160000 SAR, and a 2016 Audi A8 V8 4.0L with 35000 km sold for 71400 SAR. The most relevant comparison is the 2015 model with similar specs and mileage, which sold for 89000 SAR. I also considered listed prices: a 2016 model with 99000 km listed for 97500 SAR, another with 90000 km listed for 83500 SAR, and another with 88000 km listed for 100000 SAR. Given these data points, I estimated the market price by averaging the most relevant selling prices and considering the listed prices.