The Zonda F (or Zonda Fangio - named after Formula One driver Juan Manuel Fangio) debuted at the 2005 Geneva Motor Show. It was the most extensive re-engineered variant of the Zonda yet, though it shared much with its predecessors including the 7.3 L AMG V12 engine which through enhanced intake manifolds, exhaust and a revised ECU now had a power output of at 6,150 rpm and at 4,000 rpm. The transmission is largely the same as the C12 S but had stronger internals and differential gears.