FINAL UPDATE: Plug-In Electric Car Sales In Jan: Winter Slump Sets In

Last year's U.S. sales of plug-in electric cars were the highest on record, but now the traditional winter sales slump has set in with a bang.

Electric car sales usually dip during the coldest months, and last January was the lowest sales month of the year--but this January's results apparently even failed to match those of the same month a year ago.

The Nissan Leaf saw 1,070 sales last month, slightly down on last year's 1,252--but considerably higher than the 650 in January 2013.

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Still, given that the Leaf's best month (August 2014) saw 3,126 sales, Leaf winter numbers are obviously down.

“We saw a significant increase in demand in December from customers looking to take advantage of Federal and state incentives at the end of the tax year," noted Brendan Jones, Nissan's director of electric vehicle sales and infrastructure.

That, he suggested, pulled some January sales ahead into December 2014--which logged a healthy total of 3,102.

The Chevy Volt, meanwhile, saw January deliveries of a mere 542, against 918 in 2014 and 1,140 in 2013. Again, that looks like some seasonal slump.

Low sales are less surprising there, since first-generation Volt sales are in a several-month wind-down before the arrival of the all-new 2016 Volt that was launched last month at the Detroit Auto Show.

And as always, Tesla Motors refuses to report monthly sales, so we have little idea how many have been sold.

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It may have been a good month for the company, though, as its production lines are apparently dedicated to cranking out the high-performance P85D all-wheel-drive model.

That's the hot car to have right now, given the blistering speed of its "Insane" mode, which accelerates from 0 to 60 mph in around 3 seconds.

The BMW i3 delivered 670 units, reverting to three-digit sales and its lowest total since last July.

Still, if BMW can resume selling at four-digit rates later in the year, the i3 will be a force to be reckoned with in the plug-in car market for the full year.

Plug-in hybrids

The Toyota Prius Plug-In Hybrid continued a several-month trend of losing steam, logging just 401 sales--its lowest total since September.

But Ford's pair of plug-in hybrid Energi models were down too.

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Just 395 C-Max and 426 Fusion deliveries were logged last month, only one-half to one-third their numbers last summer and lower than their January 2014 totals.

And the plug-in hybrid Honda Accord, which has always sold in minimal numbers, came in at 28 units--similar to its volume a year ago at this time.

Low-volume vehicles