GM says new Volt to get 230 mpg in city driving

If the figure is confirmed by the EPA, the Volt would be the first car to exceed triple-digit gas mileage.

By
August 12, 2009 09:28
2 minute read.
GM says new Volt to get 230 mpg in city driving

volt car 88 248. (photo credit: )

General Motors Corp. said Tuesday its Chevrolet Volt rechargeable electric car should get 230 miles per gallon (98 kilometers per liter) of gasoline in city driving, more than four times the current champion, the Toyota Prius. The Volt is powered by an electric motor and a battery pack with a 40-mile (65-km.) range. After that, a small internal combustion engine kicks in to generate electricity for a total range of 300 miles (480 km.). The battery pack can be recharged from a standard home outlet. GM came up with the 230-mile (370-km.) figure in early tests using draft guidelines from the US Environmental Protection Agency for calculating the mileage of extended-range electric vehicles, said Tony Posawatz, GM's vehicle-line director for the Volt. If the figure is confirmed by the EPA, which does the tests for the mileage posted on new-car door stickers, the Volt would be the first car to exceed triple-digit gas mileage, Posawatz said. GM has produced about 30 Volts so far and is making 10 a week, CEO Fritz Henderson said during a presentation of the vehicle at the company's technical center in the Detroit suburb of Warren. Henderson said charging the volt would cost about 40 cents a day. "The EPA labels can and will be a game-changer for us," he said. Most automakers are working on similar plug-in designs, but GM could be the leader with the Volt, which is due in showrooms late in 2010. Toyota's Prius, the most efficient car now sold in the US, gets 48 mpg (20 kpl) of gas. It is a gas-electric hybrid that runs on a small internal-combustion engine assisted by a battery-powered electric motor to save gasoline. The first-generation Volt is expected to cost near $40,000, making it cost-prohibitive to many people even if gasoline returns to $4 per gallon. The price is expected to drop with future generations of the Volt, but GM has said government tax credits and the savings on fuel could make it cost-effective, especially at 230 mpg (98 kpl). "We get a little cautious about trying to forecast what fuel prices will do," Posawatz said. "We achieved this number, and if fuel prices go up, it certainly does get more attractive even in the near-term generation," he said. Figures for the Volt's highway and combined city/highway mileage have not yet been calculated, Posawatz said. The combined mileage will be in the triple digits as well, he said, but both combined and highway will be worse than city because the engine runs more on longer highway trips. The EPA guidelines, developed with input from automakers, figure that cars like the Volt will travel more on straight electricity in the city than on the highway. If a person drives the Volt less than 40 miles (65 km.), in theory they could go without using gasoline. The mileage figure could vary as the guidelines are refined and the Volt gets further along in the manufacturing process, Posawatz said.


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