Shenzhen, China – Chinese vehicle company BYD has marked the one-year anniversary of the world’s largest all-electric taxi fleet and announced results of its F3DM, e6 and eBUS-12 electric vehicle pilots.

Fifty of BYD’s five-seat crossover e6 vehicles have been in service at the Shenzhen-based Pengcheng Electric Taxi Company since April 29, 2010. The fleet has now accumulated a combined 2.77 million kilometres, with the distance travelled for single fleet vehicles reaching 100,000 km. The e6 has a range of up to 300 km and a top speed of 140 km/h.

“This fleet of 50 e6 taxis has survived the very harsh operating conditions of hot Shenzhen summers and a very cold winter this year, and drivers and passengers alike have been extremely satisfied with their ride experience,” said Stella Li, senior vice-president. BYD will deliver 250 more electric cabs to the International University in Shenzhen before August 2011.

According to collected data, each car saves over US$1,167 per month in fuel, driving an average of 400 kilometres per day, and are expected to help Shenzhen avoid about 60.4 kilograms of carbon dioxide emissions per car per day.

The most important test finding was that there was no noticeable energy drop in driving range, and battery performance was stable in rapid-charging conditions over the distances tested. BYD said that it has been “challenged by the media about its claims of long-range electric vehicles and superior battery longevity in rapid-charging regimes since launching its first dual-mode, electric and plug-in hybrid electric vehicles in December 2008.” The company said that the e6 fleet was continuously rapid-charged in 20 to 30 minutes, giving it a proven record for its iron-phosphate battery technology.

BYD also reported on its F3DM fleet, which was launched in its first U.S. test at the Housing Authority of Los Angeles. The F3DM plug-in hybrid can travel over 64 km in all-electric mode and then engages as a hybrid electric to extend its range up to 482 kilometres. The fleet now has accumulated 16,785 kilometres in all-electric and 23,222 kilometres on extended range. The fleet is achieving an equivalent of 2.6 L/100 km and BYD estimates a per-car savings of 70 per cent even with charging and electricity costs.

In China, BYD launched an all-electric bus fleet, using the eBUS-12 in Shenzhen and Changsha from January 2011. The fleets have accumulated 46,380 km while undergoing a three-hour charge. The company estimates a savings of about $2,833 per bus per day at 200 kilometres per day. BYD will deliver 300 more buses to Shenzhen in August 2011.

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