WOLFSBURG, Germany --- Volkswagen has introduced a suite of fuel-saving technologies and engines, collectively dubbed BlueMotion Technologies, which initially will be available only in Europe.

The systems include a new start-stop system and energy recovery by regenerative braking, electric drives and hybrid systems as well as drive systems like the one in the new TSI EcoFuel. The aim is "to bring the cleanest and most economical cars to the streets," Volkswagen said.

BlueMotionTechnologies are already being launched on the market in three Passat versions: Blue­Motion with fuel consumption under 5 liters, EU-6 conformance in the BlueTDI, and the TSI EcoFuel that emits just 119 g/km CO2.

Here are examples:

Passat BlueMotion -- A common rail TDI (81 kW/110 PS) provides for 4.9 liter fuel consumption and CO2 emissions of just 128 g/km. The Passat BlueMotion has a start-stop system and conforms to limits of the Euro-5 emissions standard. It has a range of over 1,400 kilometers (868 miles) on one tank of fuel. The Passat BlueMotion will also be available as a wagon.

Passat BlueTDI -- This TDI conforms to limits of the Euro-6 emissions standard that will go into effect in 2014. A Selective Catalytic Reduction converter reduces nitrogen oxides to less than 80 mg/km. Fuel economy of the sedan shifted by a 6-speed gearbox: 5.2 liter/100-km (CO2 emissions: 137 g/km). The BlueTDI will also be available as a wagon, and it will be available with a 6-speed DSG.

Passat TSI EcoFuel -- With its 110 kW engine, the Passat TSI EcoFuel has maximum speed of 210 km/h (130.2 mph) despite its excellent fuel economy. The car accelerates to 100 km/h (62 mph) in just 9.7 seconds. The turbocharged and supercharged direct-injection engine is configured for natural gas operation and is satisfied with just 4.4 kilograms of natural gas. With a 7-speed DSG, the Passat breaks the CO2 limit of 120 g/km in this class (6-speed transmission: 4.5 kg/100-km and 123 g/km CO2). If the natural gas on board should run low before the next fill-up station, the engine controller switches over to gasoline mode. The car has a total range of more than 900 kilometers (558 miles).

Touareg V6 TSI Hybrid -- Volkswagen is presenting a prototype of the future Touareg V6 TSI Hybrid (333 PS / under 9.0 l/100 km). This car, entering production in 2010, is a hybrid SUV with 3.5 metric ton towing capacity. Volkswagen is using a high-tech alliance of a V6 TSI (245 kW) boosted by supercharger and an electric motor (38 kW). Up to a speed of 50 km/h (31 mph), the Touareg V6 TSI Hybrid can be driven by just the electric motor. In this case, no emissions are generated.