Usually, the reviews you see on the web are made after a week or two of driving that particular car. This is a long term review of the McLaren MP4-12C. This usually means the car was driven for several months before offering an opinion about it. The new 2013 McLaren MP4-12C is powered by a 3.8-liter V8 twin turbocharged engine that spits out 625 PS and 600 Nm of torque.