These latest spy pictures of the new BMW M5 reveal that development has now shifted to the Nurburgring.
The next M5 will be the first M5 to use turbocharging; power is set to come from the twin-turbo V8 engine used in the X5 and X6 M models.
Despite having as smaller capacity than the V10 engine it replaces, the V8 will be more powerful, have considerably lower emissions and an increase in torque of around 30 per cent.
This will boost torque from today’s 383lb ft at 6100rpm to somewhere around 500lb ft at little more than 1500rpm. The V10’s 500bhp comes at 7750rpm, but the V8’s peak power should arrive at not much more than 6000rpm.
Along with the new engine, the car will also get a new gearbox, a beefed-up version of the M3’s seven-speed DCT.
The car will get Active Aerodynamics, which blanks off parts of the grille and cooling intakes during warm-up and under light throttle load.