The Mercedes-Benz E 63 AMG is now even more powerful and efficient. As part of the “AMG Performance 2015” model strategy, the high-performance car now benefits from the new AMG 5.5-litre V8 biturbo engine. This unit, already familiar from the CLS 63 AMG, delivers an output of 386 kW (525 hp) to 410 kW (557 hp), together with an impressive reduction in fuel consumption: the E 63 AMG consumes 9.8 l/100 km (24.00 mpg/US, 10.20 km/l) (Estate 10.0 l/100 km (23.52 mpg/US, 10.00 km/l) according to NEDC (New European Driving Cycle) combined, in other words 22 percent less than its predecessor with the AMG 6.3-litre V8 naturally aspirated engine. As a result the E 63 AMG, which is available in Saloon and Estate variants, is the most efficient vehicle in its class. An important contribution to this is also made by the AMG SPEEDSHIFT MCT 7-speed sports transmission, and the newly developed electromechanical AMG speed-sensitive sports steering system. Additional assistance systems now also raise occupant safety to a whole new level.
This eight-cylinder powerhouse, designated internally as the M 157, boasts a combination of innovative high-tech components: in addition to spray-guided direct petrol injection with piezo injectors, these include a full aluminium crankcase, four-valve technology with camshaft adjustment, air/water intercooling, generator management and stop/start system. With a displacement of 5461 cc, the eight-cylinder engine develops a peak output of 386 kW (525 hp) and torque of 700 Nm (516 lb-ft).
In conjunction with the optional AMG Performance package, these figures increase to 410 kW (557 hp) and 800 Nm (590 lb-ft). Both variants of the E 63 AMG achieve exceptional performance: acceleration from zero to 100 km/h (62 mph) takes 4.3 and 4.2 seconds respectively (Estate: 4.4 and 4.3 seconds), and the (electronically limited) top speed is 250 km/h (155 mph). A quick glance at the technical data reveals the tremendous accelerating power of the eight-cylinder biturbo engine: no less than 700 Nm (516 lb-ft) of torque can be called upon across a broad engine speed range from 1750 to 5000 rpm. When combined with the AMG Performance package, the driving experience becomes even more impressive: now precisely 800 Nm (590 lb-ft) of torque is available between 2000 and 4500 rpm. The result is effortlessly superior power delivery, which can be enjoyed in manual “M” transmission mode in particular.
Despite its increased output, higher torque and improved performance, the new E 63 AMG shows an improvement of 2.8 litres (0.73 gal/US) in fuel efficiency compared with the previous model with V8 naturally aspirated engine. Fuel consumption, at 9.8 l/100 km (24.00 mpg/US, 10.20 km/l) according to NEDC combined (New European Driving Cycle), corresponds to CO2 emissions of 230 grams per kilometre (Estate: 10.0 l/100 km (23.52 mpg/US, 10.00 km/l); 234 g/km). Both variants achieve the same consumption and CO2 figures either with or without the AMG Performance package. As a result, the E 63 AMG takes the lead in a competitive comparison.
The improvement in output and torque that comes with the AMG Performance package is due primarily to an increase in the maximum charge pressure from 1.0 to 1.3 bar. Visible differentiation is provided by the engine cover in genuine carbon fibre. The AMG Performance package also includes the AMG Performance steering wheel with black Alcantara in the grip area, red-painted brake callipers and, in the case of the Saloon, the genuine carbon fibre AMG spoiler lip on the boot lid and the electric rear window blind.
A major contribution to the car’s exemplary consumption figures is also made by the AMG SPEEDSHIFT MCT 7-speed sports transmission. In place of a conventional torque converter, this uses a compact wet start-up clutch. The E 63 AMG also features a stop/start function as standard: this is active in the Controlled Efficiency (“C”) transmission mode and switches the eight-cylinder engine off when the vehicle comes to a standstill. The stop/start function can be activated or deactivated using the ECO button on the centre console. When in transmission mode “C”, the vehicle will always start up in second gear. The system will also change gears noticeably early and avoid high engine speeds.
Demand-driven delivery of fuel and a generator management system with braking energy recuperation during deceleration add further to the economic use of fuel.Driving dynamics certainly don’t suffer as a result: the transmission modes “S” (Sport), “S+” (Sport plus) and “M” (Manual) enhance the car’s agility quite noticeably. Shorter response times, higher engine speeds and more spontaneous gear changes demonstrate the full potential of the new AMG V8 biturbo engine. In all three transmission modes, not only is the stop/start function deactivated but, at full load, the engine management system partially suppresses the cylinders. This carefully managed interruption to ignition and injection results in faster gear changes and an emotive acoustic effect. The automatic double-declutching function in reverse gear provides the perfect complement.