In its standard version the Porsche Panamera Diesel is powered by a 3.0 liter V6 diesel engine that delivers a total of 250 HP. Good, but not very impressive for a luxury sedan like this. So, this is where the German tuner TechArt comes into focus. The tuner has just unveiled a pretty cool tuning package that increases the output from 250 HP to 280 HP (a 30 HP increase). Peak torque goes from 405 lbs-ft to 442 lbs-ft.