G-Power recently put the M5, dubbed Hurricane, to the test at the Nardo high speed test track in Italy and “only” achieved a premature top speed of 322 km/h (200 mph) due to an electrical fault compared to its potential 350 km/h (217 mph) according to G-Power engineers. G-Power is currently planning to increase boost pressure to 1.0 bar for an output of 800hp. Details to follow towards the end of the month.
Source: G-Power