Renntech Starts Mercedes-AMG GT S Tuning, Dyno Test Shows 530 HP Stock

Mercedes-AMG GT S 1 photo
Photo: screenshot from Youtube
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 SLS, it's actually faster due to the lightness of the body. In any case, if it's power you're after, why not visit the offices of famed tuner Renntech?
Started by a few skilled ex AMG engineers, they are the go-to guys if you want the fastest Mercs on the planet. One of the first GT S models to be delivered in Germany has fallen into their hands and development of both State 1 and Stage 2 kits has begun.

But before they do that, Renntech have strapped the car to a dyno to see what the new 4-liter twin-turbo engine is capable of. Official numbers say we should expect 510 PS at 6,250rpm and 650 Nm of torque. But in typical German fashion, these numbers have been understated a bit, as GT S actually puts down 532 PS. Could there be a 20 hp error from the dyno? We don't now, but for a 4-liter that's very impressive anyway.

Considering it's the fastest Mercedes ever to go around the Top Gear test track, we're not surprised AMG GT is not a boastful car. But pretty soon, the Renntech engineers will finish a Stage 1 ECU remap and give us around 600 PS. Who says there's no replacement for displacement?

Designed to compete with the Porsche 911 range, the AMG GT is a front mid-engine concept with transaxle and its intelligent aluminum lightweight construction forms the basis for a dynamic driving experience. It can be yours for as little as €115,000, but supply is very limited right now.

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About the author: Mihnea Radu
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Mihnea's favorite cars have already been built, the so-called modern classics from the '80s and '90s. He also loves local car culture from all over the world, so don't be surprised to see him getting excited about weird Japanese imports, low-rider VWs out of Germany, replicas from Russia or LS swaps down in Florida.
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