Not wanting to get left behind in a world of 500 horsepower Euro-bruisers, RENNtech announced today its new "stage 3" kit designed to squeeze an impressive 695 horsepower and 895 lb-ft of torque out ...

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 ...

Mercedes-AMG’s hottest coupe, the AMG GT S, is not underpowered, but Renntech felt the need to give it extra oomph. The tuning company that specializes in vehicles with the three-pointed star logo now ...

Apparently squeezing an additional 102hp and 128lb-ft (174Nm) of torque from the 4.0-liter V8 engine that powers the Mercedes-Benz G500 4×4² makes it an “ultimate off-road machine” for Renntech. The ...

Sometimes,” says Hartmut Feyhl, “I am a little ashamed to call myself a tuner.” Not because the calling itself isn’t noble (how can making cars go faster and handle better be otherwise?), but because ...

The E63 S is probably the most exciting sub-$200,000 car of the year. By no means it is the first Mercedes-AMG that comes with AWD, but it sets the bar higher than its predecessors. "How fast can I ...

Mercedes' GLK compact SUV is still not officially on sale despite being revealed in production form ahead of the Beijing Motor Show in April. But that's not stopping RENNtech from tuning a special ...

Today, Kirby’s focus has shifted toward following industry news, and he has a sincere passion for one-off and tuned vehicles, car toys (especially LEGO brand,) and anything else even closely related ...

A lightweight Japanese sports coupe and a high-power German heavyweight are two different ways to experience 1990s greatness, at the only car show that celebrates the era. Steven Ewing spent his ...

Back in 1997, Mercedes-Benz had yet to formally acquire aftermarket tuning group AMG. But when it wanted to impress Jerry Seinfeld with a loaner Tri-Star, it couldn’t just give him a base model E420.