Chevrolet Volt Gets Expected 230 MPG Rating

Chevrolet announced the fuel economy on its upcoming Volt range-extended electric vehicle today, and the automaker expects 230 miles per gallon of city driving.

The Chevrolet Volt has an expected electric range of 40 miles on a single charge. If one were to drive that amount or less between charges, one would never need to use any gasoline. The flex fuel-capable range extending generator provides extra electrical power when the charge is depleted, and allows for an overall range of over 300 miles.

It should be a blast to drive, too, if we're not mistaken.

The Volt should begin production in 2010 as a 2011 model year vehicle.

Check out the Chevrolet Volt images in the gallery above, or scroll down to read the press release.

Chevrolet Volt Expects 230 mpg in City Driving

    * First mass-produced vehicle to claim more than 100 mpg composite fuel economy
    * Tentative EPA methodology results show 25 kilowatt hours/100 miles electrical efficiency in city cycle
    * Plugging in daily is key to high-mileage performance

WARREN, Mich. - The Chevrolet Volt extended-range electric vehicle is expected to achieve city fuel economy of at least 230 miles per gallon, based on development testing using a draft EPA federal fuel economy methodology for labeling for plug-in electric vehicles.

The Volt, which is scheduled to start production in late 2010 as a 2011 model, is expected to travel up to 40 miles on electricity from a single battery charge and be able to extend its overall range to more than 300 miles with its flex fuel-powered engine-generator.

"From the data we've seen, many Chevy Volt drivers may be able to be in pure electric mode on a daily basis without having to use any gas," said GM Chief Executive Officer Fritz Henderson. "EPA labels are a yardstick for customers to compare the fuel efficiency of vehicles. So, a vehicle like the Volt that achieves a composite triple-digit fuel economy is a game-changer."

According to U.S. Department of Transportation data, nearly eight of 10 Americans commute fewer than 40 miles a day http://tinyurl.com/U-S-DOTStudy .

"The key to high-mileage performance is for a Volt driver to plug into the electric grid at least once each day," Henderson said.

Volt drivers' actual gas-free mileage will vary depending on how far they travel and other factors, such as how much cargo or how many passengers they carry and how much the air conditioner or other accessories are used. Based on the results of unofficial development testing of pre-production prototypes, the Volt has achieved 40 miles of electric-only, petroleum-free driving in both EPA city and highway test cycles.

Under the new methodology being developed, EPA weights plug-in electric vehicles as traveling more city miles than highway miles on only electricity. The EPA methodology uses kilowatt hours per 100 miles traveled to define the electrical efficiency of plug-ins. Applying EPA's methodology, GM expects the Volt to consume as little as 25 kilowatt hours per 100 miles in city driving. At the U.S. average cost of electricity (approximately 11 cents per kWh), a typical Volt driver would pay about $2.75 for electricity to travel 100 miles, or less than 3 cents per mile.

The Chevrolet Volt uses grid electricity as its primary source of energy to propel the car. There are two modes of operation: Electric and Extended-Range. In electric mode, the Volt will not use gasoline or produce tailpipe emissions when driving. During this primary mode of operation, the Volt is powered by electrical energy stored in its 16 kWh lithium-ion battery pack.

When the battery reaches a minimum state of charge, the Volt automatically switches to Extended-Range mode. In this secondary mode of operation, an engine-generator produces electricity to power the vehicle. The energy stored in the battery supplements the engine-generator when additional power is needed during heavy accelerations or on steep inclines.

"The 230 city mpg number is a great indication of the capabilities of the Volt's electric propulsion system and its ability to displace gasoline," said Frank Weber, global vehicle line executive for the Volt. "Actual testing with production vehicles will occur next year closer to vehicle launch. However, we are very encouraged by this development, and we also think that it is important to continue to share our findings in real time, as we have with other aspects of the Volt's development."

About Chevrolet
Chevrolet is one of America 's best-known and best-selling automotive brands, and one of the fastest growing brands in the world. With fuel solutions that go from "gas-friendly to gas-free," Chevy has nine models that get 30 miles per gallon or more on the highway, and offers three hybrid models. More than 2.5 million Chevrolets that run on E85 biofuel have been sold. Chevy delivers expressive design, spirited performance and provides the best value in every segment in which it competes. More information on Chevrolet can be found at www.chevrolet.com. For more information on the Volt, visit http://media.gm.com/volt/.

General Motors Company, one of the world's largest automakers, traces its roots back to 1908. With its global headquarters in Detroit, GM employs 235,000 people in every major region of the world and does business in some 140 countries. GM and its strategic partners produce cars and trucks in 34 countries, and sell and service these vehicles through the following brands: Buick, Cadillac, Chevrolet, GMC, GM Daewoo, Holden, Opel, Vauxhall and Wuling. More information on the new General Motors Company can be found at www.gm.com.

 

Nissan's 367 mpg riposte is covered here .

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Comments

chartguy

At $40K each, with a battery range of 40 miles, that's $1000/mile of range.

Who would buy this? Maybe somebody who commutes less than 20 miles a day, over relatively level terrain, and cares more about image than money. 

Advanced calculus won't come up with a way for the volt to make economic sense.

 

"Houston, er, Detroit, we have a problem!"

dieselhead

I found your thought to be so disconnected from reality that it inspired me to start a thread on Fuel Economy Calculus in the Unguzzle forum. Fortunately, simple +-/X was all I needed to show why your "problem" isn't one.

Kingsman42sc

I cannot tell from the article if the batteries are recharged while driving with the gasoline engine. If so, the car would be switched back to battery operation after gasoline is depleted or the batteries are recharged.  If I wanted to take a 300 mile drive would I be able to switch back and forth between battery and gas operation to make the trip within a day OR would I have to stop once or twice for several hours each to recharge the battery?  I'm not sure this is a superior system to the Toyota Prius hybrid. IF GM had stuck with the electric vehicle program started in the 1990s they would be ahead of the game now.  I've lost faith in GM.

 

Tom Martin

To be clear, the Volt always is powered by the electric motor. The gasoline engine on board is there to charge the batteries as they get close to depletion, and to operate a generator that can power the electric motor. When gasoline is depleted you must refuel (or recharge the batteries from an electric source). GM says a Volt that has run out of gas can actually "limp" a short distance by deep discharge of the batteries. Of course, all vehicles require some energy source, so every car must be refueled/recharged eventually.

The range of the Volt is about 40 miles using no gasoline; when gasoline is also used, the total range is thought to be about 400-600 miles (the car isn't production ready, so we'll know in the future). 

To take a 300 mile trip without recharging, you must have enough gas on board to make it, just as with a gasoline powered car, or you must refuel en route (again just like a gas powered car or a hybrid).  If you have access to gas, you never have to plug the car in.

The Volt is an electric car with gasoline back up. The idea is that it is superior to a hybrid (e.g. Prius) because under the right circumstances it never needs gasoline and it can be vastly more fuel efficient (this is what GM is trying to show with the 230 mpg number). It is thought to be superior to a pure EV because you can never be stranded (assuming you have gas) and can go long distances.

Jeff

Hate to be a party pooper, but there are a lot of misconceptions about the Volt.
#1 The engine provides power for the electric motor and DOES NOT recharge the battery.
#2 The driver cannot manually switch from gas and battery.
Basically to sum it up think "train locomotive". While the battery is within it's range of charge the electric motor will be powered by that battery. Once the charge drops below a threshold, the gasoline engine turns on and provides electricity for the drive motor. There have been preview drives of test mules of the Volt but interestingly none have been demonstrated under gasoline power. Another auto publication discussed the power deficit that the Volt will have while driving with the gasoline engine providing the electricity. The problem is the engine/generator will not be able to provide the peak current that the battery can. This may lead to drop in performance and/or high NVH while under hard acceleration (highway on-ramp) or going up grade. This is the reason the very similar Fisker Karma is using a turbo engine. Despite these shortcomings, the Volt is probably the best way to make a hybrid. It is well known that an electric motor is great for propulsion. Great torque delivery and the ability to spin up to real high RPM. This is why most industrial lift trucks are electric as well as train locomotives. The ongoing problem has been and will continue to be how to provide enough electricity on board to provide power for the motor.
 
"Just because you read the manual doesn't mean you can drive the car."

 

Tom Martin

Yes, the gas engine is primarily there to operate the electric generator which in turn powers the electric motor. This happens when the battery is depleted to a certain point of around 30% "full"(avoiding deep discharge prolongs battery life). The car then automatically switches over from battery as the electricity source to engine/generator as the electricity source. Normally in series hybrids, like the Volt, it is also possible for the engine to recharge the batteries at certain times. GM says the gasoline engine/generator are designed to run at a constant speed for maximum efficiency, and there may be load cycles that mean the engine/generator set temporarily dumps some of its power into the batteries. Similary, regenerative braking will replenish the batteries. GM says the Volt engine/generator will not fully recharge the battery. That's because primarily one doesn't want to use the engine to charge the batteries since the conversion losses of going from electric (generator) to chemical storage (battery) back to electric are inefficient.

In any event, the big point is that the Volt has the zero gasoline usage advantage of EVs for typical short distance driving, while having the advantage of long range and quick refueling of internal combustion cars. 

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