The RS 5 Coupe runs a new twin-turbocharged 2.9-litre V6 direct injection petrol engine developing the same 331kW but a considerable 170Nm more torque than the naturally aspirated 4.2-litre V8 powerplant used by its predecessor.
An Australian debut is scheduled for later this year, with the luxuriously-equipped, four-wheel drive performance coupe having been engineered anew from the ground up.
Together with the new engine, the RS 5 Coupe also adopts a new platform that sees it grow in size over the seven-year-old model it replaces. Further developments include a new chassis featuring five-link front and rear suspension set-ups coupled to Audi Sport's Dynamic Ride Control system offering variable damping control.
Distinguishing the RS 5 Coupe from other recently introduced second-generation A5 Coupe models are a series of traditional RS exterior styling cues. They include a wider single frame grille featuring a high gloss black honeycomb insert, a new front bumper sporting larger air ducts and an intricate splitter element and headlamps with tinted graphics for the standard LED projectors.
Further back, the front fenders have been widened by 15mm and feature so-called quattro blisters together with additional vertical air ducts along the outer edges of the headlamps. The exterior mirrors get a carbon fibre optic and the side sills have been widened with high gloss black elements to reflect the added performance potential of Ingolstadt's latest two door.
At the rear, the RS 5 Coupe's wider rear fenders also extend out some 15mm more than those on the standard A5 with more pronounced quattro blisters. It also receives subtle boot deck lid spoiler, a uniquely styled bumper housing a prominent diffuser in high gloss black and two signature oval tailpipes.
The latest RS model rides on standard 19-inch wheels, with 20-inch wheels offered as an option. Two additional styling packages in either high gloss black or matt aluminium are also available. As part of a weight saving initiative, Audi Sport also offers the new RS 5 Coupe with a carbon fibre roof, which is claimed which contribute to a claimed 60kg reduction in kerb weight over the old RS 5 Coupe despite a 74mm increase in overall length with the new model.
The twin-turbocharged 2.9-litre V6 used by the new RS 5 Coupe was developed in an engineering cooperation between Audi and its Volkswagen Group sister company, Porsche. The 90-degree unit is already employed in the second-generation Porsche Panamera S, where it delivers 324kW and 550Nm of torque. With unspecified changes, it gains 7kW and 50Nm, producing 331kW and 600Nm between 1900 and 5000rpm in the new Audi Sport model.
By comparison, the naturally-aspirated 4.2-litre V8 multi-point injected engine used by the old RS 5 Coupe delivered the same 331kW while its 430Nm of torque came at a much higher 4000rpm.
The reduction in kerb weight helps to provide the new 1655kg 2017-model-year RS 5 Coupe with a weight-to-power of 5.0kg per kW. By comparison, the old 1705kg first-generation RS 5 Coupe on sale in Australia since 2010 boasted 5.15kg per kW.
In a further change to the new Audi's driveline, the latest RS 5 Coupe forgos the seven-speed dual clutch gearbox of its predecessor for an eight-speed torque converter equipped automatic from German specialist, ZF. It is allied to the latest version of Audi's quattro four-wheel drive system that apportions drive in a rear wheel biased 40:60 split and also comes with an optional sport differential offering a torque vectoring effect for the rear wheels.
Audi claims a 0-100km/h time of just 3.9sec, which is 0.6sec faster than the old RS 5. Top speed is nominally limited to 250km/h, though buyers can extend it to 280km/h though a so-called dynamic package option that provides the new coupe with altered engine management software..
Inside, the new Audi Sport model receives a full compliment of traditional RS interior appointments, including a unique RS display for the digital instrument graphics, a flat bottom multi-function steering wheel, heavily contoured sport seats and stainless steel pedals.
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