Motor technology from Model 3 helps Tesla boost Model S range 10%

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Tesla's Model S is known for its long range, with the 100kWh version rated to travel 335 miles between charges. On Tuesday, Tesla announced changes to the Model S drivetrain that boosted the range by more than 10 percent to 370 miles.

Similar improvements have pushed the range of the high-end Model X up to 325 miles. And that's all without increasing the vehicle's battery capacity. The cars are simply able to go 10 percent further for every kWh of charge-which translates to electricity savings for Tesla customers.

Several factors combined to produce these impressive efficiency gains. Tesla switched one of the motors in the Model S and Model X to a new technology pioneered in the Model 3. The company also announced an improved suspension system and other efficiency tweaks throughout the vehicle. The impressive result: greater than 93 percent energy efficiency.

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