This high-tech package leads to a high output and torque yield, together with
fuel consumption figures that are unrivalled in the competitive lineup. The AMG
5.5-litre V8 biturbo engine develops a peak output of 400 kW (544 hp) and maximum
torque of 800 newton metres. In conjunction with the AMG Performance
package these figures are increased to 420 kW (571 hp) and 900 newton metres.
A look at the performance diagrams shows that no other engine in this output
class achieves the figures delivered by the new AMG biturbo. The major difference
between the two performance classes is an increase in the maximum charge
pressure from 1.0 to 1.3 bar.
Quantum leap: fuel consumption reduced by 25 percent
With a provisional NEDC fuel consumption of 10.5 litres per 100 kilometres, the
new S 63 AMG is 3.9 litres more economical than the preceding model powered
by the naturally aspirated AMG 6.3-litre V8 – despite an increase in output by
14 kW (19 hp) resp. 34 kW (46 hp) and in torque by 170 and 270 newton metres.
Engine specialists consider this achieved fuel saving of more than 25 percent to
be nothing less than a quantum leap. CO2 emissions have likewise been significantly
reduced: at 246 grams per kilometre, the figure is 28.5 percent lower than
for the previous model.
With figures like these, the new S 63 AMG is not only considerably better than all
its competitors, but also more fuel-efficient than much less powerful cars in this
segment. Taking into account its enormous performance and torque figures the
new AMG 5.5 litre V8 biturbo engine is in parts twice as efficient as many midsegment
or compact-class diesel engines.
At the same time the S 63 AMG delivers superior performance at sports car level:
the high-performance saloon accelerates from zero to 100 km/h in 4.5 seconds,
and has an electronically limited top speed of 250 km/h. The 100 km/h mark is
reached in just 4.4 seconds with the AMG Performance package, with the top
speed increased to an electronically limited 300 km/h.
Engine production – tradition of hand-built excellence
Like all other AMG engines, the new eight-cylinder biturbo is assembled by hand
in the AMG engine shop taken into commission in 2002. A single, highly-qualified
technician assembles the M 157 according to the "one man, one engine" philosophy,
maintaining the very strictest quality standards. This painstaking care is
attested to by his signature on the characteristic AMG engine plate.
AMG CEO Volker Mornhinweg: "Efficiency plus performance"
"With the new AMG V8 biturbo engine and the AMG SPEEDSHFT MCT 7-speed
sports transmission, we are confronting the challenges of the future and focussing
on fuel consumption and exhaust emissions even more intensively than before.
Our new high-performance engine shows that AMG occupies a leading position
in terms of both efficiency and our brand commitment to "performance," says
Volker Mornhinweg, Chairman of Mercedes-AMG GmbH.
"The new AMG V8 biturbo engine is yet another milestone in our impressive V8
history. For the first time we have combined spray-guided direct petrol injection
with turbocharging. With this high-tech package we are "best in class" with
respect to fuel consumption, output and torque," says Friedrich Eichler, Head
of Engine and Powertrain Development at Mercedes-AMG.
Exciting power delivery, characteristic sound
These on-paper figures raise high expectations which the 400 kW (544 hp)
AMG 5.5-litre V8 biturbo certainly meets. The flat torque curve ensures enormous
pulling power in all speed ranges: 670 newton metres are already available at
1500 rpm, and the maximum torque of 800 newton metres is delivered just
500 rpm later, remaining constant to 4500 rpm. Even more effortless performance
is ensured by the engine variant with the AMG Performance package, which has
a peak output of 420 kW (571 hp). In this case the eight-cylinder delivers
875 newton metres of torque at just 2000 rpm, with a constant 900 newton
metres available between 2500 and 3750 rpm.
It is not only the unrivalled torque delivery of this turbocharged eight-cylinder
that makes the heart beat faster, as the agile responsiveness with no irritating
charger delay leads to an effortlessness and dynamism previously unknown in
this output class. All perfectly matched by the characteristic, sonorous engine
note. Moreover, this AMG high-performance engine naturally meets all the
requirements with respect to smooth, quiet running and the comfort on long
journeys that is to be expected of a Mercedes.
MCT 7-speed sports transmission with Controlled Efficiency mode and
start/stop function
Power is transferred by the AMG SPEEDSHIFT MCT 7-speed sports transmission
used exclusively by AMG, which is already familiar from the SL 63 AMG and
E 63 AMG and combines high emotional appeal with outstanding driving dynamics
and a high level of efficiency. The wet start-up clutch replaces a conventional
torque converter, and helps to save fuel. The exemplary fuel economy is also in
large measure due to the standard start/stop function. This system is active in the
transmission's Controlled Efficiency ("C") mode, and switches the eight-cylinder
engine off when the car comes to a stop. In "C" mode the sports saloon always
starts off in second gear, and the transmission shifts to the next, higher gears at
a decidedly early stage. With its high torque at low engine speeds, the V8 engine
encourages a smooth, effortless driving style.
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