US reports suggest Toyota delivered 1654 Prius PHEVs in its first full sales month in April and followed up with 695 in June.
With Toyota claiming "over 6000" Prius PHEV sales in the first six months since its launch in a limited number of US states in March, this would indicate Prius PHEV is selling a little more than 1000 units a month.
August sales figures issued by General Motors show Volt achieved 2831 sales, taking its eight-month year-to-date tally to 13,497 units.
Nissan says it sold 685 Leafs in August - down by half on its August 2011 tally of more than 1300 units - taking its YTD Leaf sales to 4228 vehicles (down 31.5 per cent).
The decline in Leaf sales is attributed to the drying up of early-adopter buyers - a common issue with full-electric cars.
With pricing starting from US$32,000 ($39,000), the Prius PHEV is cheaper in the US than either the Volt or Leaf, which have sticker prices starting at US$39,645 and US$35,200 respectively.
All of these models qualify for federal tax breaks of up to US$7500.
Now on sale in Europe and Japan following its debut at the Frankfurt motor show in September last year, the Prius PHEV achieves fuel economy of 2.1 litres per 100km and carbon emissions of 49 grams per kilometre. It can travel on electric power up to 23km at up to 100km/h, and its lithium-ion battery can be recharged from an external charge point in about 90 minutes.
This compares with a maximum range of 2km at speeds of less than 50km/h in full-electric mode for the standard, non-plug-in Prius hybrid.
Toyota New Zealand has had three plug-in models for testing and hopes to introduce the model in 2015.
"However Toyota is providing vehicles to larger countries with government subsidies first," said a Toyota NZ insider.
-Go Auto