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Without any fanfare, the EPA has released its range rating for the second version of the Tesla Model S to come to market.
The 2013 Tesla Model S fitted with a 60-kilowatt-hour battery pack has a rated range of 208 miles.
That compares to 265 miles for the Model S version with the largest 85-kWh battery pack.
The new 60-kWh Model S has a higher efficiency rating (95 MPGe versus 89 MPGe) and uses slightly less energy to cover 100 miles: 35 kWh versus 38 kWh.
The Miles-Per-Gallon-equivalent (MPGe) rating measures how far a vehicle can travel on the amount of electricity equivalent to the energy content of one gallon of gasoline.
The 85-kWh Tesla Model S received its 265-mile range rating in June.
The new model's 95-MPGe efficiency rating is close to the 99-MPGe rating of the 2012 Nissan Leaf, an impressive number for a larger, heavier, more capacious, and faster luxury sport sedan.
The differences in the two Model S versions may be attributable to the 60-kWh version's lighter weight and some differences in standard features.
Tesla Motors [NSDQ:TSLA] will begin delivering the 60-kWh Model S versions early next year.
The final and lowest-range version of the Model S, fitted with a 40-kWh lithium-ion battery, will be the last to enter production--by March, Tesla has said.
That version has not yet been rated by the EPA.
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The better efficiency compared to the 85KW version must be due to lower weight. Too bad Tesla's website still quotes 4,647.3 lbs as the vehicles curb weight which is only correct for the 85KW version. Knowing this version's weight would give an indication of the battery's energy density at the pack level since the vehicles are otherwise completely the same.
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