XL1 dive and drive: Volkswagen aggressively optimizes for efficiency in its sleek diesel plug-in hybrid
Green Car Congress
JUNE 24, 2013
Even a sportscar like the Porsche Boxster is 5.1 The ceramic brakes make a sound similar to sliding out on gravel, or swooshing through water. The mechanical water pump actively cools the engine only when operating conditions require it. two-cylinder diesel, 20 kW electric motor and 5.5 XL1 is visually striking; 153.1
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