Engine and powertrain
Infiniti's latest 3.7-litre V6 is a potent, high revving, 24-valve twin cam unit producing 235 kW at 7,000 rpm (320 PS) and an impressive 360 Nm of torque at 5,200 rpm.
Constructed from lightweight aluminium, the engine features a two-part bed-plate construction which is more rigid than a single piece casting for reduced vibration levels. It also permits sustained use at higher revs: the V6 is red-lined at 7,500rpm.
The VQ37 unit features VVEL (Variable Valve Event and Lift) technology to optimise efficiency and, in turn, the balance between power, response, fuel efficiency and emissions.
By continually altering valve lift and therefore the quantity of air in the combustion chamber it provides a more powerful combustion phase to increase torque and power. Best of all, as the valves control the intake rather than a conventional butterfly, response to throttle inputs is immediate. VVEL improves fuel economy and lowers emissions compared to standard valve lift systems.
Precise mapping of the ECU, meanwhile, helps the engine provide a progressive 'swell' of power and torque, providing a 'building wave' of acceleration rather than a peaky power delivery.
It delivers a top speed of 250 km/h (155 mph) with 0-100 km/h (0-62 mph) taking 5.8 seconds (on M/T version). Fuel economy over the combined cycle is 10.5 l/100kms (26.9 mpg) while the Coupé has a CO2 figure of 249 g/km. The engine is fully compliant with Euro 5 emission level requirements.
In keeping with the performance profile of the Coupé, Infiniti engineers have developed a special aural soundtrack for the car. Equal length tubular exhaust manifolds and a symmetrical exhaust and silencer system have allowed the engineers to create a linear sound with a good balance between low and high frequency notes.
As well as a smooth shifting six-speed manual transmission, the Infiniti G37 Coupé is available with a new seven-speed automatic option with Adaptive Shift Control (ASC) and magnesium paddle shifters mounted behind the steering wheel.
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