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ABOUT RENNtech

RENNtech specializes in building Mercedes-Benz vehicles to the highest standards, increasing the performance and delivering unrivaled quality and comfort for Mercedes-Benz vehicles from every decade. Our team of engineers, fabricators, and technicians work with state-of-the-art tools at our facility in Stuart, FL. The combination of experienced specialists and highly qualified young talents ensure that the work, development and skills and skills pass to the next generation of Mercedes-Benz AMG, technicians, owners and enthusiasts. 

1989

Hartmut Feyhl establishes RENNtech, Inc. in Ft. Lauderdale, FL. By 1995 RENNtech moved to Lake Park, FL where the company stayed for over 20 years.

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2019

RENNtech celebrated its 30th Anniversary at their Head Quarters in Stuart, FL.

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1977

Hartmut Feyhl (top right), racing against Bernd Schneider (#8).

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2023

RENNtech Motorsports Team fields its AMG GT4 racecar in the SRO Pirelli World Challenge America -series for the 4th consecutive year.

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We design, engineer and manufacture a proprietary line of tuning prodcts for Mercedes-Benz AMG vehicles. Our facility features fabrication and machine shop complete with CNC and rapid prototyping capabilities, while our performance shop features 9 lifts, two dynos, engine management and software tuning capabilities along with a complete service, repair and installation facility.

RENNtech S76R 
Big, Fast, First Class

W140 S-Class Development

1992 Mercedes-Benz 600 SEL S76R. Powered by a 615 hp, 7.6 -liter M120 V12 engine, the S76R is the most powerful naturally aspirated V12 built by RENNtech and the largest displacement on record for the Mercedes Benz M120.

Interview With Hartmut Feyhl
Untold Story of the AMG Hammer

With CURATED TV

CURATED founder John Tamerian interviews Hartmut Feyhl.  Since starting at AMG in 1977, Feyhl's career as an Engineer at AMG, Feyhl has been to pursuing the limits of Mercedes-Benz AMG performance.

Archives
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AUTO, MOTOR und SPORT
500 SEC AMG | C126 4 Valve 5.0

"A Gathering of Eagles"

by Rich Ceppos for Car and Driver
December 1987

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AUTOMOBILE
300 E 6.0 AMG | W124 4 Valve 6.0

"A Gathering of Eagles"

by Rich Ceppos for Car and Driver
December 1987

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AUTOMOBILE
RENNtech SL 60 | R129 M119 6.0 -liter

"Three Days in the Slammer"

by Barry Winfield for Automobile Magazine
July 1991

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CAR and DRIVER
RENNtech E74 RS | W210 7.4 liter V12

"Think a V12 would fit in here?"  "Sure."

by Steven Cole Smith for Car and Driver
December 1998

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CAR and DRIVER
AMG 300E HAMMER | W124 4 Valve 5.6

"A Gathering of Eagles"

by Rich Ceppos for Car and Driver
December 1987

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CAR and DRIVER
300 E 6.0 AMG | W124 4 Valve 6.0

"A Gathering of Eagles"

by Rich Ceppos for Car and Driver
December 1987

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CAR and DRIVER
RENNtech E60 | W124 6.0 liter

"Supercar Speed with Four Door Comfort" 

by Arthur St. Antoine for Car and Driver
January 1992

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CAR and DRIVER
RENNtech E60 4Matic | S210 6.0 liter M113

"Mr. Feyhl's Executive Jet for Kids."

by Aaron Robinson for Car and Driver
November 2001

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AUTO, MOTOR und SPORT
300 E 6.0 AMG | W124 4 Valve 6.0

"A Gathering of Eagles"

by Rich Ceppos for Car and Driver
December 1987

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CAR and DRIVER
300TE 6.0 AMG | S124 6.0 -liter Estate

"Not a Hammer, but a muscular mallet."

by John Phillips III for Car and Driver
February 1990

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CAR and DRIVER
RENNtech SL 60 | R129 6.0 

"A M.B. hot rod shows as well as it goes." 

by Csaba Csere for Car and Driver
February 1994

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