The Bentley Arnage was a large luxury car produced by Bentley Motors in Crewe, England from 1998 to 2009. The Arnage, and its Rolls-Royce-branded sibling, the Silver Seraph, were introduced in the Spring of 1998, and were the first entirely new designs for the two marques since 1980.

Another break from the past was to be found under the bonnet, for decades home to the same 6.75 litre V8 engine, a powerplant which could trace its roots back to the 1950s. The new Arnage was to be powered by a BMW V8 engine, with Cosworth-engineered twin-turbo installation, and the Seraph was to employ a BMW V12 engine.