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The 720S features McLaren's new M840T engine which is an evolution of the M838T used in the 650S. [9] It is a 3,994 cc (4.0 L; 243.7 cu in) twin-turbocharged V8 engine. [10] [11] The engine has a rated power output of 720 PS (530 kW; 710 hp) at 7,500 rpm, giving the car its name; the maximum torque is 568 lb⋅ft (770 N⋅m) at 5,500 rpm.
The McLaren M840T engine is a 4.0 L (244.1 cu in), 90-degree, twin-turbocharged, flat-plane V8 petrol engine, designed, developed and produced by McLaren, in partnership and collaboration with Ricardo, and introduced with their 720S sports car model, in 2017. It is an evolution of the M838T engine, introduced in 2011.
The 720S is the standard bearer here for McLaren - it is an awesome engineering marvel. But the 720S doesn’t just exist in a vacuum - it exists because McLaren has competitors to battle.
1:12.6 – McLaren 720S - Series 25; 1:12.8 – Ultima GTR. After Top Gear allegedly refused to drive it because "they thought it couldn't clear a speed bump", Ultima Sports, Ltd. drove the car from Surrey to the track and set the time, verified by Plans Motorsport. [23] 1:13.2 – McLaren P1 tested by Motor Trend 2014
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The efficiency often reported for a particular engine, however, is not its maximum efficiency but a fuel economy cycle statistical average. For example, the cycle average value of BSFC for a gasoline engine is 322 g/(kW⋅h), translating to an efficiency of 25% (1/(322 × 0.0122225) = 0.2540).
Australia: Since the year 2000, the Federal Government's luxury car tax applies to new vehicles over a certain purchase price, with higher thresholds applying for cars considered as fuel efficient. [3] [4] As of 2019, the thresholds were approximately AU$66,000 (US$50,000) for normal cars and AU$76,000 (US$57,000) for fuel-efficient cars. [5]
Specific fuel consumption may refer to: Brake-specific fuel consumption , fuel efficiency within a shaft engine Thrust-specific fuel consumption , fuel efficiency of an engine design with respect to thrust output