The next Maserati Quattroporte (2013) was recently spied again stretching its legs on Ferrari's test track in Italy. Unfortunately, it's wearing the same amount of camouflage as when we last saw it, back in April, when it was running on the Nurburgring. Maserati is expected to sell the 2013 Quattroporte in at least two versions. One will be powered by a 420 hp V6 engine and the other will get a much more powerful 5.2-liter V8 with an output of around 520 hp.