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New 2013 BMW 6 Series Gran Coupe features upgraded engines, suite of EnergyDynamics technologies; ECO PRO mode

BMW introduced the 6 Series Gran Coupe&madsh;a new 4-door, 4+1 seat addition to the 6 Series line. The BMW 6 Series Gran Coupe will be offered as three distinct models in the USA. The TwinPower Turbo 6-cylinder powered 2013 BMW 640i Gran Coupe is the initial model and arrives early this summer. Later in the summer, the TwinPower Turbo V-8 powered 2013 BMW 650i Gran Coupe and the all-wheel drive 2013 BMW 650i xDrive Gran Coupe will join the range.

BMW 640i Gran Coupe. Click to enlarge.

BMW fine-tuned the inline 6-cylinder engine (N55HP) in the new BMW 640i Gran Coupe. The N55 has been the lead of a new generation of engines in which BMW TwinPower Turbo technology with High Precision Direct Injection and VALVETRONIC variable valve timing plus a twin scroll turbo made its debut.

BMW engineers extracted additional performance from the engine while maintaining its fuel efficiency. With a maximum power rating of 225 kW/315 hp at 5,800 to 6,000 rpm, the 3.0-liter 6-cylinder engine offers high peak torque of 330 lb-ft (447 N·m), on stream between 1,300 and 4,500 rpm.

The 640i Gran Coupe can accelerate from 0 to 62 mph (0-100 km/h) in 5.4 seconds. Top speed is electronically governed at 155 mph (250 km/h). Fuel consumption in the EU test cycle is rated at 7.8 L/100km (30.2 mpg US). EPA fuel economy ratings will be available closer to the on-sale date in the USA.

The 4.4-liter V-8 engine (N63) that powers the current 650i models also receives an upgrade for the new 650i Gran Coupe. The new version of the “reverse-flow” engine, whose two turbochargers are positioned in the V-area between the cylinder banks, adds BMW’s VALVETRONIC variable valve timing to the list of specifications. As a result, the new version of the engine (N63Tü) develops a maximum 445 hp (332 kW) between 5,500 and 6,000 rpm (a 45 hp increase), and makes peak torque of 480 lb-ft (651 N·m) between 2,000 and 4,500 rpm (a 30 lb-ft increase).

The new BMW 650i Gran Coupe accelerates from 0 to 62 mph (0 to 100km/h) in 4.6 seconds. Top speed is electronically limited to 155 mph. Average fuel consumption lies between 8.6 and 8.8 l/100km (26.7-27.3 mpg US), (provisional figures according to EU test cycle depending on tire options). EPA fuel economy ratings will be available closer to the on-sale date in summer 2012.

The 8-speed Sport Automatic transmission in the new BMW 6 Series Gran Coupe features minimal torque converter slip and rapid gear changes. An innovative gear set configuration allows this transmission to offer eight gears, maximizing acceleration at any road speed, yet allowing the driver to conserve fuel by cruising at low revs. The driver can choose to select gears manually via shift paddles on the standard Sport leather steering wheel.

In addition to the efficiency of the engine and 8-speed Sport Automatic transmission, an extensive range of BMW EfficientDynamics measures contribute to reducing fuel consumption and emissions. Brake Energy Regeneration, engine Auto Start-Stop, on-demand operation of ancillary components, intelligent lightweight construction and extensive aerodynamic refinement collaborate to ensure maximum efficiency.

As well as sportier or more comfortable drive settings, drivers can also opt for extra fuel efficiency. The different modes are selected using the new Driving Dynamics Control function including ECO PRO mode, which is standard on all 6 Series models. The driver can choose settings of COMFORT+, COMFORT, SPORT, SPORT+ and ECO PRO modes using the large rocker switch on the center console.

Affected parameters include the tuning of the throttle response, power steering boost assistance, shock absorbers, automatic transmission shift characteristics and—if equipped&madsh;roll stabilization and Integral Active Steering. In SPORT+ mode, the Dynamic Traction Control mode of the standard Dynamic Stability Control system is activated, raising the thresholds for stability intervention in the most sport-oriented driving circumstances.

The new ECO PRO mode supports a more efficient and economy-conscious driving style. It does this by changing the accelerator mapping so that the same pedal travel delivers less power than in the standard mode. Also in this mode, the automatic transmission control strategy is modified so as to upshift sooner and to delay downshifts, while intelligent energy and climate management reduces the mechanical power consumption and also the consumption of electrical systems such as heated mirrors and seats.

The biggest potential for improving fuel economy comes from the driver’s own personal driving habits, BMW notes. Special displays in the instrument cluster let the driver know by how much the driving range is being extended, show fuel consumption history, or, with reference to the specific driving situation, provide tips and incentives on how to develop a more economy-conscious driving style. ECO PRO mode allows average fuel consumption to be reduced by up to 20%, with a corresponding increase in driving range.



This is of interest to a GREEN Car Congress because...??

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Sporty and stylish, the BMW cars are crowd puller in its earnest sense. Hope the all new 2013 BMW 5 series will be the package of spacious and versatile car providing comfort, safety and reliability.

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