Porsche Turbo S can hit 60 mph in 3.6 seconds

2012 Porsche Panamera Turbo

Porsche says the Turbo S can hit 60 mph in 3.6 seconds, 0.3 second quicker than the regular Panamera Turbo, and reach a top speed of 190 mph -- a two-mph improvement over the stock Turbo.

The power upgrades resemble those provided by a Porsche-issued Turbo Powerkit, which can be fitted on the Panamera Turbo to raise output to 540 horsepower and 553 pound-feet of torque. That kit costs $21,730.

The Panamera Turbo S goes on sale this spring for $174,175 including destination and delivery, a premium of $37,900 over a base Panamera Turbo.

2012 Porsche Panamera Turbo

2012 Porsche Panamera Turbo