Here are some options depending on your definition:
* Longest wheelbase: The Mercedes-Maybach S-Class boasts the longest wheelbase amongst sedans, measuring 130.6 inches. This makes it a very spacious car, particularly for rear passengers.
* Longest overall length: The Rolls Royce Phantom is the longest sedan based on overall length at 228.9 inches. This also makes it a very spacious car, but its size comes with a premium price tag.
* Longest in history: The 1955 Cadillac Eldorado Brougham is considered to be the longest production sedan of all time, measuring 228.5 inches long.
Ultimately, the "longest" sedan depends on what criteria you're using. If you're looking for the most spacious sedan with the longest wheelbase, the Mercedes-Maybach S-Class is a good choice. If you're looking for the longest sedan overall, the Rolls Royce Phantom takes the crown. And if you're looking for the longest sedan ever produced, the 1955 Cadillac Eldorado Brougham holds that title.
