The 1.6-liter turbocharged hybrid V6 that's rumored to power the 300 new cars is derived from the championship winning Formula One engine, though revs would be limited to a measly 11,000 rpm. Expect electric motors to power at least the front wheels, meaning the 0-60 mph time should be ridiculously quick. We won't see the car until the Frankfurt Motor Show, but expect more hype and teasers in the meantime.
Most of these multi-million dollar hypercars (like the Porsche 918, McLaren P1, LaFerrari, or Bugatti Chiron) won't touch 10,000 miles, much less 31,000. AMG has to know that going in, which is why it focused more on performance and less on maintenance costs. Also, if you've got a few million to blow on a car, you can afford to have trained techs maintain it.