Volkswagen Group said its German fleet business showed a clear increase in low-emission vehicles being sold or leased to key accounts.

The German carmaker said in a press release that CO2 emissions in its key account business had averaged 136 grams/km in the first half, below the European Union target of 140 grams. VW brand CO2 emissions in this segment were 127 grams/km.

VW cited a study conducted by the Dataforce market research institute.

"The study’s findings confirm the Volkswagen Group takes sustainable mobility in the fleet market, as elsewhere, very seriously," said Martin Jahn, managing director VW Group Fleet International.

VW said the study showed that environmental compatibility, low fuel consumption and low emissions are the top three criteria in the choice of fleet vehicles.

VW Group vehicles had a 47.9 pc share of the German key account passenger car business in the first half of 2011.