Third-generation Golf BlueMotion concept lowers fuel consumption to 3.2 l/100 km (73.5 mpg US); on sale in summer 2013
|The latest Golf BlueMotion. Click to enlarge.|
At the Mondial de l’Automobile in Paris, Volkswagen is unveiling a new Golf BlueMotion concept car. This Golf concept, powered by another new 1.6-liter TDI (turbodiesel) consumes 3.2 l/100 km (73.5 mpg US), equivalent to 85 gCO2/km. The 81 kW / 108 hp Golf BlueMotion is a five-seater that is capable of 202 km/h (125 mph). This third generation Golf BlueMotion will be launched into the market in summer 2013.
The first generation of the Golf BlueMotion made its debut five years ago at the Geneva Motor Show; the car was launched into the market at the end of 2007. At that time, the Golf BlueMotion offered fuel consumption 4.5 l/100 km (52.3 mpg US). In 2009, Volkswagen showed the second generation Golf BlueMotion, also in Geneva; its fuel consumption had been reduced to 3.8 l/100 km (62 mpg US) (earlier post); first deliveries of the production version of this Golf BlueMotion were made in October of the same year.
Fuel consumption for the third generation Golf BlueMotion is thus reduced by another 0.6 liters (15%) and CO2 emissions by 14 grams per km.
With a 50-liter fuel tank and 3.2 l/100 km fuel consumption, the new Golf has a theoretical range of 1,562 km (971 miles). Given an average annual driving distance of 15,000 km, most drivers will only have to refuel this Volkswagen ten times per year. At the current price of fuel in Germany (Source: German Petroleum Industry Association, July 2012) this would amount to a total fuel cost for the year of a €694 (US$893).
The car’s combined fuel consumption— the lowest yet attained in a conventionally-fueled Golf— was enabled by innovative lightweight design (including 26 kg less weight in the chassis and 37 kg less in the superstructure); engine-related modifications; and a collection of other measures. These include super low rolling resistance tires with higher air pressure; longer gear ratios (5-speed manual gearbox); the Stop/Start system; and battery regeneration mode that are standard in all new Golf cars and specific aerodynamic modifications.
In the area of aerodynamics, the frontal area of the new Golf was reduced by 0.03 m2 and aerodynamic drag (cD x A) by nearly 10%. Compared to other Golf models, the aerodynamics of the BlueMotion were also refined by a lowered chassis (by 15 mm); a roof spoiler; lateral air guide elements on the rear window; a radiator grille that is closed to the outside; partially closed air inlet screens; optimized cooling airflow; special underfloor panels; optimized brake cooling channels; and a C-pillar spoiler. These measures take the Golf BlueMotion to a cD value of 0.27, making it one of the most aerodynamic vehicles in its class.
In the Golf BlueMotion concept car, Volkswagen is employing a 1.6-liter turbodiesel direct injection engine from the newly developed EA288 engine series. (Earlier post.) The sixteen-valve, four-cylinder engine develops its maximum torque of 250 N·m (184 lb-ft) at a low 1,500 rpm; this torque is available up to an engine speed of 2,750 rpm. Various measures and technologies such as reduced internal friction; an innovative thermal management system with shortened warm-up phase; exhaust gas recirculation (EGR); cylinder pressure sensor; two-stage oil pump; switching water pump and water-cooled intercooler right in the intake manifold result in successfully reducing fuel consumption and emissions.
To reduce emissions values further, Volkswagen has also implemented an oxidation catalytic converter, a diesel particulate filter and a NOx storage catalytic converter.
Until now, the most fuel-efficient Golf was only offered as a single specific BlueMotion model. That will change with the new production model, which will be available as either a Trendline or Comfortline equipment version. The new Golf BlueMotion will also be exclusively offered with 15- and 16-inch wheels to optimize weight, aerodynamics and rolling resistance.