Polestar 2 fastback adds more vroom with $1,195 press of a buy button

Polestar is dialing up the performance of the Polestar 2 fastback. All it takes is the press of the Buy button.

The Swedish electric automaker is offering a $1,195 software upgrade that boosts the Polestar 2's power and shaves 4.2 seconds off the car's zero to 60 mph time.

The performance package is available to customers in the United States and Canada via an over-the-air download.

The instant upgrade adds 68 horsepower and 15 pound-feet of torque to the dual-motor powertrain, for a total output of 476 hp and 502 pound-feet of torque.

Behind the wheel, the performance boost delivers increased responsiveness and a sportier experience overall, Polestar said.

The additional power and torque are primarily felt at speeds between 44 and 80 mph, resulting in even, rapid mid-range acceleration. With the upgrade, accelerating from 50 to 75 mph takes 2.2 seconds – half a second quicker than a standard Polestar 2.

"This upgrade highlights how connected technologies can transform the relationship a car company has with its customers," Polestar CEO Thomas Ingenlath said in a statement.

Automakers are increasingly relying on over-the-air software updates to offer on-demand features and create post-sale revenue streams.

General Motors projects it will generate up to $25 billion in annual revenue by 2030 from software and subscription services.

Mercedes-Benz is promoting an annual $1,200 Acceleration Increase subscription that unlocks horsepower and acceleration on the EQ line of electric vehicles.

"Fine tuning of the electric motors increases the maximum motor output of your Mercedes-EQ by 20 to 24%," Mercedes notes on its website. "The torque is also increased, enabling your vehicle to accelerate noticeably faster and more powerfully."

The upgrade also quickens the 0-to-60 mph time by "around 0.8 to 0.9 seconds." Mercedes said.