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JONATHAN COHN MARCH 4, 2011

Low Voltage

Auto industry buffs love the Chevy Volt, the new electric car from General Motors. But buyers? Not so much. At least, not yet. Chevrolet sold just 281 Volts in February, after selling just 321 in January. The car is selling far better than its closest competitor, the Nissan Leaf, but the volume is obviously low.

GM says the problem is lack of supply, not lack of demand, and that sales will pick up once the company can make more cars. Fast Company has the story:

Slow sales of the Volt are actually part of a planned strategy, explains Volt spokesperson Rob Peterson. A significant portion all Volts produced in February were sent to dealers as demo units (all Volt dealers get a demo so that customers can take test rides).

"I wouldn't go so far as to say that sales were down, I would say that more production was earmarked towards demos," Peterson explains. "There are some Volts that are out on lots, but not many. The average daily inventory is the lowest in our fleet, if not the lowest in the industry. They're landing on the dealer lots and they're gone."

Sales will probably start to rise after April, when all 600-plus Volt dealers have their demo units.

That seems reasonable enough. Not so easy to dismiss, though, is a review just in from Consumer Reports. The magazine's drivers were happy enough with the car's style and performance. But they found that the battery discharged more quickly than expected, sometimes after just 23 miles of travel. At that point, the car started drawing on its gasoline engine.

What does that all mean for the consumer? Once you account for the cost of electricity, according to the magazine, a Volt driver spends about about 5.7 cents per mile while the car is in all-electric mode and 10 cents per mile when it's in gasoline mode. Drivers of the Toyota Prius spend 6.8 cents a mile. (The Prius is a more traditional hybrid, shifting constantly between electric and gasoline power, so there's just one cost figure and not two.)

If you use the car strictly for short trips, and charge between drives, you're still spending less per mile with the Volt. But the Prius is far cheaper, even after government tax credits, and for that reason Consumer Reports says it can't recommend the Volt. Via the Detroit News:

"When you are looking at purely dollars and cents, it doesn't really make a lot of sense. The Volt isn't particularly efficient as an electric vehicle and it's not particularly good as a gas vehicle either in terms of fuel economy," said David Champion, the senior director of Consumer Reports auto testing center at a meeting with reporters here. "This is going to be a tough sell to the average consumer."

Of course, GM made a deliberate decision to target upscale car buyers who want an all-electric car, rather than the average consumer looking for the smartest buy, with its first-generation electric vehicle. In addition, Consumer Reports ran its tests during the coldest weeks of winter, when batteries deplete faster.

Then again, GM presumably hopes to sell the Volt in northern states as well as southern ones, so performance in cold climates isn't exactly irrelevant.

Notwithstanding all of the hype--including any I might have helped create!--it's not as if the future of GM or even the future of electric cars depends on the Volt's first year success. Remember, GM as a whole still seems to be doing quite well. Still, for those of us who care about the American auto industry and a cleaner environment, the Volt's early accolades have been encouraging. This report obviously isn't.

Consumer Reports notes that its results are still preliminary; it says it's still putting the vehicle through a full testing regimen. Here's hoping more tests, and more experience, prove this initial review to be an outlier.

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3 comments

It's well known that in cold weather the battery range is about 1/2 of what it is in warm weather. Testers at Edumnd's "Inside Line" got 40-50 mi. in pure electric driving in warmer weather; cold weather testing yielded in the low 20s. Look at what GM promised: 25-50mi. of pure electric range. It delivers on what is promised. The Volt is new technology. Of course it's expensive. So is any technology when it's new. Did you check the price of a PC in 1983? Or how about a cell phone in 1984? As a first generation technology of course it'll have issues and deficiencies. And they'll get ironed out in subsequent generations and the price will come down. Virtually no one is buying a car like that because it "makes sense". I'd expect the 2nd gen. Volt to have a battery warming system (which I think Ford will have in it's electric Focus, if that vaporware ever shows up on the market). And CR is the last publication to look for advice on anything automotive. I don't remember them bashing the 1st generation Prius, which was a POS when it first came out. At least the Volt drives like a real car, something the Prius still can't claim.

- tmmats

March 4, 2011 at 4:07pm

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The battery must have been designed by male engineers.

- GSpinks

March 4, 2011 at 7:34pm

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Also, to be fair and compare apples to apples, mileage in a Prius also goes way down in cold and snowy or icy weather. When the temperature is in the single digits and the air is damp (for that temperature, obviously), I get 45 mpg; at 50F on a nice high pressure sunny day, I easily get 55 mpg on the same route. One thing that is rarely commented on is how good any hybrid in Northern climates has to be at heat management in order to maintain efficiency. If you're sitting behind 356 cci V8, heat is free. They make so much just turning over, you can't have too little to spare, and you just pipe what you want into the cabin and onto the windshield, and go. If you're in a Prius, heat is a precious commodity. The gas engine is most efficient when hot, so you don't want it to run cool. At single digit or lower temperatures, it wants to retain heat in the engine, and of course you want it in the cabin. That costs you. If you're sitting at a long traffic light or in stop and go traffic, the "no energy use when not moving" ethos of the Prius that is absolutely spot on on a mild sunny day, falls apart. The engine has to run from time to just to maintain the cabin temperature (to be fair, the same effect happens for the A/C on a HOT summer day). Plus the .25 coefficient of drag the Prius achieves dictates a windshield that is very large (because it lies flat relative to most windshields in order to maintain the bullet profile), and that means a lot of glass to warm. Finally, although I'm sure it didn't impact the Volt tests, if like me you don't garage your car, you may end up with some snow and ice firmly frozen onto your hybrid's sleek aerodynamic profile. Probably wouldn't notice that on a Hummer, but you can easily knock several mpg off a Prius just by having the hood and cabin top be the site of turbulent air flow due to rough ice or snow adhered to them. It all adds up. Love my Prius, but I do settle for about 10mpg less during the winter months than in the other seasons.

- IowaBeauty

March 6, 2011 at 9:30am

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