The 2018 Mercedes-AMG S65 gets a V12 making 621 hp.

The 2018 Mercedes-AMG S65 is a large ultra-luxury car with all the bells and whistles and tricks and toys you can imagine. The S65 is the top trim, the most expensive S-Class you can buy, and that includes both Maybach versions of the Mercedes luxury sedan. The cornerstone is a twin-turbocharged 6.0-liter V12 that wins every argument.

Key Competitors: BMW M760i xDrive, Porsche Panamera Turbo S E-Hybrid Executive, Bentley Flying Spur, Beechcraft Bonanza airplane

Base Price: $232,195 As-Tested Price: $243,495