I gather that the VVTi is a high revving engine as today on a motorway run was revving up to 4500 rpm then changing gear. In 5th was doing 70mph @ 3200rpm. Question is at 4500 rpm (nowhere near redline) engine sounded like it was starting to scream. At what point does the VVTi max out rev-wise. How safe to take revs higher. The acceleration was very quick, for me, anyway. Normally only do around town runs, lots of stop/start and taking it steady. Will occasionally 'Thrashing' the engine give it a clear out or potentially cause problems. Hope this all makes sense