Okay, boys and girls, it’s time to stretch those skeptic muscles again. General Motors announced this week the impending release of the Chevy Volt, one of the, if not the first of the mass-marketed plug-in hybrids. They also touted that the Chevy Volt would get an amazing 230 miles per gallon! Well, extraordinary claims require extraordinary evidence, and since General Motors can’t have submitted their new star for outside testing, we only have their word.
Oh, only if that were the case. This is what I found in a New York Times’ article on the Volt.
An analysis by GM-Volt.com, an unofficial site that is not affiliated with G.M., runs the numbers this way: The E.P.A. city cycle is just over 11 miles, so the Volt would run 40 miles gas free, then go through an 11-mile cycle with the gas engine running in “charge-sustaining mode.” If we assume the Volt gets 50 miles a gallon in that mode (based on the number G.M. cited for its concept vehicle in 2007), then it would use .22 gallons of gas in 11 miles, the equivalent of 231.8 m.p.g.
So based on driving a 51 mile day in the city, you’d get 231 miles to the gallon. If you drive less than 40 miles a day, then you burn no gas. So the mileage claim is based on crunching the numbers the right way.
That’s not where the skeptic muscles come in. Is it worth it for you to get a Chevy Volt? If so, how long would you need to own it in order to make it pay for itself? Well that’s just a little bit of math, and to make it work, let’s make the math easy and use a gas price of $3.00 a gallon.
So you drive 51 miles a day and we’re comparing it to a car getting 23 miles a gallon. In one year, you’ll drive 49,215 miles. paying $6,419.35. With a Chevy Volt, you’ll only spend $641.94, for a total savings of $5777.41. Let’s assume that this conventional car costs $20,000 or half of the Volt’s $40,000 price tag. We’ll round time up to allow for a slight increase in your electric bill from charging the Volt every night and a decrease in fuel efficency over time, and you can pay for the Volt with the Volt in just about four years.
All in all, not bad. Of course, if you drive more, it’ll take longer, maybe longer than you’d like to own a car. I’ve kept mine for nine years, but I’ve known people to trade cars after five years. So before committing to a car like the Chevy Volt calculate how much you drive a day, and if it’s less than 40, you’re good, if it’s significantly more, say 100-200 miles a day (don’t laugh, a lot of people in the South commute 60 miles or more to work, so they can live in a rural area) than it might not be the best economic choice for you. Go to Google Maps and calculate what you drive. I drive about 20 miles a day, so it’d be a good choice, if I could afford to drop $40,000 on a Volt, and it’d pay for itself in just over 3 years. If someone drives 125 miles a day round trip, the mileage would lessen and could be out of the range of realistically paying for itself.
However, for long car trips across states, you might want a conventional car that you don’t need to plug up to get going. That’s something not mentioned in the press release.
In conclusion, yes, it may get good mileage, just maybe not the same for everyone, and it may not be a good economic decision if you have one of those 60 mile one way commutes, it might be better to invest in a used Prius.