Volkswagen said it is still seeking the cause of a weekend power outage at its Wolfsburg plant in Germany and said production had been cut by several hundred vehicles, more than it initially estimated.

The outage affecting generators at Wolfsburg occurred early on Saturday and lasted for several hours, also affecting adjacent parts of the northern German city, where Europe’s largest automotive group is headquartered.

VW is running extra shifts in Wolfsburg during the first quarter to cope with demand for the seventh-generation Golf hatchback, its top-selling model, and the Tiguan compact SUV.

VW initially pegged the loss of production in Wolfsburg at about 100 cars. The biggest plant in VW’s global network of over 100 factories employs more than 50,000 workers and assembles up to 3,800 cars per day.

“We’re a bit clearer now on the impact of what happened,” a spokesman said on Monday. “Final effects of the power failure will be fixed over the next few days,” he said, noting delivery dates were not at risk. “The search for the cause of the incident is continuing.”

VW has a 2014 goal to “moderately” increase deliveries from last year’s record 9.7 million autos.