Sick 'supertuner' cars

European tuning companies specialize in customizing high-end luxury cars for buyers who want even more over-the-top vehicles.

Techart GrandGT

techart european tuner cars

Porsche tuner Techart can take the stock Panamera Turbo, not a slow car to begin with, and boost the horsepower all the way to 630 from 500. Techart also adds its own aerodynamic package with body add-ons made from carbon fiber. The car is also about an inch wider at the front wheels and an inch and a half wider in the back.

  @peterdrives - Last updated March 20 2013 06:13 AM ET

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