The current Audi A8 has been on sale since 2003 and since that time has only received a minor facelift to keep it fresh alongside the Mercedes-Benz S-Class, Lexus LS and soon-to-be superseded BMW 7-series. The minor styling changes implemented during the recent facelift will have to soldier on for a few more years as the next-generation ‘D4’ A8 is, according to latest reports, is expected to arrive in the second half of next year.