The AMG GT is one of the most exciting sportscars of the moment, a jewel in the Mercedes crown from both the engineering and design point of view. Even though on paper it's down on power compared to ...

The W140 Mercedes S-Class was always available with plenty of grunt, but AMG tuner Renntech has seen fit to give the mighty luxobarge a bonkers 615-horsepower V12 upgrade. The resulting beast is known ...

Renntech, a specialized Mercedes-Benz tuner from the United States of America, has revealed a new package for the S 63 in Coupe guise. We are writing about an evolution (pun intended) of a previous ...

Having already impressed us with its initial tuning for the Mercedes-AMG GT S, which we might add saw the car creep into the 10s over the quarter mile, America’s Renntech used the recent SEMA show to ...

The ad for today's Nice Price or No Dice SL600 claims the car's twin-turbo V12 has been massaged by RENNTech, resulting in a 635-horsepower output. That's nothing to sneeze at, but we'll still have to ...