Video: RENNtech Mercedes-Benz CLS 63 breaks quarter-mile record

A highly modified Mercedes-Benz CLS 63 AMG has broken the world record by running a quarter mile in a blistering 10.6 seconds. The twin-turbo V8 monster is tuned by RENNtech.

RENNtech Mercedes-Benz CLS 63 AMG record quarter mile


In its factory form, the CLS 63 AMG is far from a weak performer. In the new ’63 AMG S’ form, it comes with a 5.5-litre twin-turbo V8 producing 430kW and 800Nm. It’s able to cover 0-100km/h in around 4.0 seconds.

In the hands of RENNtech, a German vehicle tuning specialist, the engine is given a liberal dose of steroids in the form of an upgraded turbo package, a modified engine computer, a custom exhaust system, and uprated intercooling. The beast then produces a whopping 540kW at the wheels.

With further help from an uprated limited-slip differential and drag radial tyres, the machine recently ran a quarter mile in just 10.6 seconds at 220km/h. According to the team behind the build, the time makes it the quickest CLS AMG 63 in the world. We don’t doubt them.

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Brett is the editor and founder of PerformanceDrive. He's obsessed with driving, having played with Matchbox cars until he was tall enough to drive a real one. After initially working as a mechanic, Brett earned a degree in journalism and entered media as an editorial assistant at Top Gear Australia magazine. He then worked at CarAdvice. His dream is to live next door to the Nurburgring in Germany.