However, McLaren quickly upgraded the engine to 616 horsepower for 2013 and offered earlier MP4-12C owners a free upgrade. The engine mated to a seven-speed dual clutch transmission facilitated 0 to ...

but the MP4-12C also gets some transmission tweaks that result in "crisper throttle response and improved clutch control for gear changes that are both faster and smoother." McLaren says it has ...

More details of the McLaren 12C GT Sprint ... turbo engine as the showroom 12C, mated to its seven-speed twin clutch gearbox. Engine upgrades include a bespoke oil system and cooling system ...