Should the Bugatti Veryon SuperSport not top the list with 431km/h.
The official name of the "Ruf Porsche Carrera Turbo" is Ruf BTR (or Ruf 911 BTR or Ruf BTR 3.4 to avoid confusing with later BTRs).The maybe first ever 300 km/h test by Auto Motor Sport (03/87) had these results:
305 km/h - Ruf Porsche Carrera Turbo
303 km/h - AMG Mercedes 300 E 5.6
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