A frugal new hybrid system is the highlight of the updated version of Volkswagen’s Cross Coupe Concept – the compact SUV that serves as a preview to the second-generation Tiguan expected to arrive in 2014. The advanced four-wheel drive is underpinning VW’s lineup at the Geneva Motor Show. This model is fitted with a new plug-in diesel-electric system that VW intends to use in upcoming production models.
VW claims that the drivetrain can provide the updated 4,096-pound Cross Coupe with combined fuel consumption of 131 mpg (U.S.) on the European test cycle. This new hybrid system is the replacement for the gasoline-electric arrangement of the initial Cross Coupe concept, which has a similar aim.
It is partnered to a 187hp variant of Volkswagen's new 2.0-liter, four-cylinder common-rail diesel engine. It uses twin balance shafts and a couple of electric motors. The one up front can deliver 54 hp and when combined with the diesel engine, it provides drive to the front wheels. Meanwhile, the second electric motor integrated at the rear develops 114 hp and drives the rear wheels. A 9.8 kilowatt-hour lithium-ion battery pack placed in the central tunnel is driving the electric motors, which are built in house at Volkswagen's Braunschweig-based r&d center in Germany.
Charging this pack is done by either plugging in, or through a regenerative kinetic energy made on the run or, in range-extender mode, direct from the diesel engine. The latest Cross Coupe has a combined system output of 302 hp and can offer up to 516 lb-ft of torque (of which 295 lb-ft is available from just 1,750 rpm).
It could accelerate from zero to 62 mph in 6.5 seconds and could reach an electronically limited top speed of 137mph. With a fuel economy rating of 131 mpg, the vehicle can be driven as far as 800 miles in hybrid mode on its 14.5-gallon fuel tank. This is much better than the 105 mpg average of the earlier gasoline-electric Cross Coupe concept.