mercedes sls gt amg 2015
Pricing is not planned to be made public until an official start to orders later this year. However, AMG sources suggest the GT will be pitched at around $300,000, significantly less than the recently discontinued SLS AMG, which retailed at $495,534 in Australia. Mercedes-Benz's AMG performance car division has finally unveiled the new GT. The twin-turbocharged 4.0-litre V8 powered two seater indirectly replaces the SLS, aiming to take on cross town Stuttgart rival Porsche and its iconic 911. The new rear-wheel drive performance coupe, which shares elements of its body structure with its predecessor and becomes the first Mercedes-AMG model to make use of a newly developed V8 direct injection petrol engine, is planned to reach Australia during the first quarter of 2015
The new engine, which receives dry sump lubrication and is mounted behind the front axle line in what Mercedes-AMG describes as a front-mid positioning, provides the standard GT with 340kW at 6000rpm and 600Nm of torque on a band of revs between 1600 and 5000rpm. With added turbocharger boost pressure and other internal tweaks, the 90-degree unit gains an added 35kW and 50Nm, endowing the headlining GT S, which is set to be the main focus of marketing efforts with the new car, with 375kW at 6250rpm and 650Nm of torque between 1750 and 4750rpm.
Like the earlier SLS, Mercedes-AMG's latest model is based around a lightweight aluminium body structure that is claimed to weigh 231kg. But in a move aimed at paring weight and providing it with a lower centre of gravity, the new car eschews the heavy gullwing style doors of its predecessor in favour of more conventional front hinged openings. In standard GT guise it tips the scales at 1540kg, while the GT S comes in at 1570kg. This gives them respective weight-to-power ratios of 4.5kg/kW and 4.2kg/kW.
By way of comparison, the 1620kg SLS AMG's naturally aspirated 6.2-litre V8 multi-point injected petrol power plant develops 420kW, providing it with a weight to power ratio of 3.9kg/kW in standard guise.
Channeling the GT's reserves to the rear wheels is a revised version of the Getrag engineered seven-speed dual clutch gearbox used by the SLS.
Depending on the model, the revised gearbox offers up to five different driving modes: controlled efficiency, sport, sport plus, individual and race – the latter available exclusively on the GT S. Both models receive a standard locking differential. But while the GT receives a mechanical unit, the GT S is fitted with an electronic function that is claimed to provide greater sensitivity by varying the locking effect in both acceleration and over run. Official performance figures give the standard GT a 0-100km/h time of 4.0sec and top speed of 304km/h. The GT S is claimed to possess slightly sharper performance with a 0-100km/h time that matches that of the SLS AMG at 3.8sec and a maximum speed that is 7km/h down on its predecessor at 310km/h. Combined cycle fuel consumption is put at 9.3L/100km for the GT and 9.4L/100km for the GT S, correlating to average CO2 emissions of 216g/km and 219g/km respectively.