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Tesla Inc. temporarily suspended production of the Model 3 electric sedan for a week in late February, a planned breather that ultimately may help increase output of the closely watched vehicle.

Model 3 production was idled from Feb. 20 to Feb. 24 before resuming at the company’s assembly plant in Fremont, California, according to the company. The automaker makes the Model S sedan, Model X sport utility vehicle and Model 3 at that site and batteries at a plant known as the Gigafactory east of Reno, Nevada.

“Our Model 3 production plan includes periods of planned downtime in both Fremont and Gigafactory 1,” a Tesla spokesman said in an emailed statement. “These periods are used to improve automation and systematically address bottlenecks in order to increase production rates. This is not unusual and is in fact common in production ramps like this.”

Tesla shares rose 0.6 percent to $329 as of 9:15 a.m. in New York, before the start of regular trading. The stock is up 5.1 percent this year.

The Model 3 is the linchpin of Chief Executive Officer Elon Musk’s plan to bring electric vehicles to the masses, but ramping up production has taken longer and been more challenging than originally anticipated. Tesla is targeting a weekly Model 3 production rate of 2,500 sedans by the end of this month and 5,000 by the end of June.

Musk, talking about his various businesses Sunday at the South by Southwest festival, said, “People have told me that my timelines historically have been optimistic.” In its last letter to shareholders, Tesla asked for patience as both buyers and investors wait for progress on deliveries, saying the Model 3 rollout has “demonstrated the difficulty of accurately forecasting specific production rates at specific points in time.”

Tesla’s Model 3 production rate has been an endless source of fascination for fans, reservation holders and investors alike, and Bloomberg developed a tool to estimate output. By late February, the Tesla Model 3 Tracker indicated that the weekly production rate had plunged. Bloomberg’s model estimates production based on Vehicle Identification Numbers, or VINs, registered by Tesla with U.S. safety regulators and from customer VINs reported to Bloomberg. Both datasets began to show production rebounded in early March.

Anticipation that the Model 3 will widen Tesla’s customer base has helped drive Tesla to a stock market value of about $55.3 billion, more than General Motors Co. or Ford Motor Co.

— With assistance by Tom Randall

( Updates with shares trading in fourth paragraph. )