The New Bentley Arnage would be powered by a BMW V8, with Cosworth-engineered dual turbo installation, and Seraph was to employ a BMW V12. The Bentley Arnage is over 5 meters (200 inches) long, 1.9 meters (75 inches) wide and has a curb weight of more than 2.5 metric tons. For a brief period, it was the most powerful and fastest four-door sedan on the market.