Nissan, meanwhile, said sales of its all-electric Leaf also climbed, though more modestly, from 478 in February to 579 in March [PDF].
In early March GM suspended production of the Volt, idling some 1,300 workers. The company said then that it would bring back the workers and restart production late this month after it worked "to build market demand."
Whether it was just good luck, good weather or something mysterious that GM did, it looks like that demand might finally be showing up.
The Volt sales figure of 2,289 was 50 percent higher than the car's previous best month, December 2011, when 1,529 cars were sold. After falling to just 603 in January this year - amid talk of Volt battery fires - sales climbed to 1,023 in February before more than doubling in March.
The Volt has been part of a big push by GM to reinvent itself as a revitalized automaker but it struggled in its debut year last year, failing to crack 8,000 sales in pursuit of a goal of 10,000. With the big March, total Volt sales since its launch in December 2010 now stand at 11,912. This still looks not enough to satisfy GM goals around this vehicle, as the automaker also announced plans to add a week to planned Volt plant shutdown time this summer.
Meanwhile, on the political front, the Volt continued to be a political piñata for Republicans, with GOP presidential contender Mitt Romney taking his turn with the beating stick. Stating he didn't feel America was ready for the green car, Romney said government should stay out of dictating what kind of cars should be made.
In addition to the big Volt number, GM reported that it sold "a record 100,000 cars and crossovers that achieve an EPA-estimated 30 mpg highway rating or better" in March.