gtchannel.com for more car videos. By improving the GT-R's engine efficiency, its fuel economy has been raised to 8.6km (tested under Japan's 10-15 mode) or 8.7km/L (in JC08 mode), while engine output has been significantly improved to 404kW (550ps)/6400rpm with maximum torque of 632N·m(64.5kgf·m) from 3200 to 5800 rpm. Engine response and torque at mid- and low-speeds, and power at high revolutions, has been significantly improved.