In an effort to reduce consumption and improve efficiency even further, Volvo has announced the combination of start/stop technology with their automatic gearboxes. The new start/stop technology, which initially is available together with the 2.0-liter D3 turbo diesel, cuts carbon dioxide emissions with 10g/km and consumes less fuel by 0.4 liters per 100 km by shutting off the engine while stopped at an intersection.

Volvo start-stop

From early September 2011, the six-speed automatic gearbox with start/stop becomes available in the D3 versions of four Volvo models: S60, V60, V70 and S80.

Combining start/stop with automatic gearbox is a larger technology challenge than the manual start/stop version already available in most Volvo models. The engine must restart instantly when the driver moves the right foot from the brake pedal to the accelerator.

"Continuously reducing CO2 emissions from conventional powertrains is an important part of our DRIVe Towards Zero emissions. It is the most effective way to cut CO2 throughout our model range in the short term. This work is running parallel with our innovative focus on electrification technologies," says Peter Mertens, Senior Vice President Research and Development at Volvo Car Corporation.

The two-liter D3 produces 163 horsepower and 400Nm of torque. The five-cylinder 2-liter turbo diesel was introduced 2010 in the all-new Volvo S60. It is now available throughout Volvo' model range.

As a result, the new D3 series yields 18.5 km/l in the S60, 17.5 km/l in both the V60 and V70, and 17.9 km/l in the S60.