June 8, 2005

New Mercedes-Benz diesel concept car gets 4.3 L/100 km

Washington, D.C. – DaimlerChrysler unveiled a four-passenger, diesel-powered Mercedes-Benz concept car that offers fuel economy of up to 4.3 L/100 km (66 mpg) (Imperial gallons) in combined city/highway driving. At a constant speed of 90 km/h, its direct-injection 140 hp diesel engine consumes only 2.8 litres per 100 kilometres (101 mpg) (Imperial gallons).

Using two new technologies, Selective Catalytic Reduction (SCR) and an additional operating fluid “AdBlue”, nitrogen oxide emissions of the direct-injection diesel engine can be reduced by up to 80 percent. “AdBlue” is an aqueous urea solution which is sprayed into the exhaust system in precisely metered quantities, depending on the engine operating status. This converts the nitrogen oxides into harmless nitrogen and water. The reservoir for this service fluid is located in the spare wheel recess of the concept car, and its capacity is sufficient for a mileage corresponding to the service interval for a current Mercedes diesel model. The Mercedes-Benz concept car is also equipped with a maintenance-free diesel particulate filter.

Though it looks boxy, the concept car has a drag coefficient of just 0.19, and is approximately one third lighter without diminishing crash protection.

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