Tesla’s Model 3, the most important car to come out in decades, has a confirmed range of 310 miles, according to the Environmental Protection Agency. That figure applies to the long-range version of the Model 3, and echoes the vehicle specs released by Tesla back in July. It also makes the Model 3 one of the most efficient passenger electric vehicles on the market.

The EPA’s range is used as the advertised figure for electric vehicles that are sold in the US. The 310-mile range is an estimate of the number of miles the vehicle should be able to travel in combined city and highway driving from a full charge. That’s 131 miles per gallon gasoline equivalent (MPGe) for city driving, 120 MPGe on the highway, and 126 MPGe combined.

one of the most efficient passenger electric vehicles on the market

You’ll have to pay more to get that extended range, though. Tesla said it would be selling a standard version of the Model 3, with just 220 miles of range, for $35,000. The long-range version will start at $44,000, the automaker says. Production on the standard version isn’t expected to begin until 2018.

Of course, that’s assuming you’ll be able to get any version of the Model 3 in the near future. In the last quarter, Tesla produced only 260 Model 3s; that’s about three cars a day and well behind a normal pace of about one car per minute. Earlier this month, Tesla pushed back its target for volume production on the Model 3 — widely seen as crucial to the company’s long-term future — by about three months to fix production bottlenecks.

Meanwhile, GM’s Chevy Bolt, the first battery-electric car to go on sale with more than 200 miles of range at a price of less than $40,000, has been increasing its sales each quarter. Last September, Chevy delivered a whopping 2,632 Bolt EVs in what is only the car's ninth full month on sale.