I just came across this article, my apologies if it's been posted already (.i.e, if it's old news).
The company, which will show off its Fisker Karma next week at the Frankfurt Auto Show, said that the plug-in Karma will consume about 3.5 liters for every 100 kilometers of driving, according to calculations developed by the Society of Automotive Engineers. There are 3.785 liters per gallon, giving the Karma a rating of 100 kilometers per 0.925 gallons of gas, or 108.1 kilometers per gallon. In miles, that comes to around 67.6 miles per gallon. (It is unclear at the moment whether or not the figure includes the electricity required to charge the battery: We are checking.) The average car in the U.S. gets about 22.4 miles per gallon. The Karma is a serial hybrid: It drives on electricity for the first 50 miles, but a gas engine recharges the battery while the car drives.The Karma uses GM's turbocharged, direct-inject 2.0L four-cylinder to run its generator. The drive train produces 408 horsepower and can propel the car to 60 mph in 5.8 seconds and onto to a top speed of 125 mph.
If the Karma can get 67.6 MPG, maybe the Volt can get 50 MPG? Of course, the article leaves a lot of unanswered questions, namely:
- (1) Is this City, Highway or Combined.
- (2) Does that value include the first 50 miles on electric (50 miles = 80 Km) -- does it use 3.5 litres to go the last 20 KM (12.427 miles/.925 Gallons = 13.4 MPG)
Hopefully, the answer is not (2).