Umdasch Celero R-6.3: Austria’s One-Off Hand-Built Sports Car

Speed Sculpture - Some cars don’t just roll off the production line — they’re crafted, almost like a piece of art. They carry the fingerprints of the people who dreamed them up, shaped them, and brought them to life. The Umdasch Celero R-6.3 is one of those rare creations, a machine that looks like it was sculpted for speed and built with a single goal in mind: to stand apart from anything else on the road.  

The Umdasch Celero R-6.3, born in Austria from the workshop of Umdasch Sportwagenmanufaktur, is a Corvette-based creation sculpted for speed and built with a singular purpose. (Picture from: GTPlanet)

Born in Austria from the workshop of Umdasch Sportwagenmanufaktur, a company usually known for tuning everything from Volkswagens to Ferraris, this one-off sports car marked a bold step into making something truly their own. Six years went into turning the idea into reality. The name itself is a small story: “Celero” comes from the Latin word for “hurry,” the “R” stands for “Race,” and “6.3” tells you exactly what’s under the hood. 

The Umdasch Celero R-6.3 made its public debut at the 2015 Essen Motor Show, a perfect stage for such an unapologetically unique creation. (Picture from: Autogen.pl)

The starting point was the chassis of a Chevrolet Corvette, but this wasn’t a simple rebody job. The Corvette’s engine and transmission were completely dismantled, reworked, and paired with a freshly engineered structure. The body was made entirely from lightweight, glass-fiber-reinforced plastics, giving the car both rigidity and a striking, exotic appearance.

The Umdasch Celero R-6.3 houses a 6.3-liter small-block V8 producing 504 horsepower in its base form, paired with a six-speed manual gearbox and rear-wheel drive. (Picture from: Autogen.pl)

The Celero R-6.3’s dimensions are low and wide — 4.46 meters long, 2.06 meters wide, and just 1.2 meters tall — with a fighting weight of 1,420 kilograms. It rides on forged, three-piece Umdasch wheels wrapped in Hankook rubber, 19 inches at the front and 20 inches at the back. Braking is handled by an in-house Umdasch system, with huge 356-millimeter front discs and eight-piston calipers for serious stopping power.

The Umdasch Celero R-6.3 features a cockpit with two bucket racing seats, a three-spoke steering wheel, and a simple dashboard equipped with instrument panels for water temperature, oil temperature, hydraulic gauges, and various knobs. (Picture from: GTPlanet)

Up front sits the heart of the beast: a 6.3-liter small-block V8 producing 504 horsepower in its base form, paired with a six-speed manual gearbox and rear-wheel drive. That output might sound “modest” by today’s extreme supercar numbers, but the Celero wasn’t about chasing outrageous specs. 

The Umdasch Celero R-6.3 features a body crafted entirely from lightweight, glass-fiber-reinforced plastics, providing both rigidity and a striking, exotic look. (Picture from: GTPlanet)

Umdasch hinted at several planned tuning stages to increase power, but even in its initial form, it promised a visceral, old-school driving experience. The prototype was first shown to the public at the 2015 Essen Motor Show, a fitting stage for something so unapologetically unique. Only one example of the Celero R-6.3 was ever built, making it as rare as they come. Back when it surfaced, it even went to auction, though the final result remains a mystery. | Wn1XT6Hq1fo | D2L6eNDzGTM | N14PI3xh5AA |

Today, it stands as a reminder of what can happen when a tuning house decides not just to improve someone else’s vision, but to create their own from the ground up. It’s a car that blends passion, craftsmanship, and a refusal to follow trends — a snapshot in time when one Austrian workshop decided to put its name on something that could never be mistaken for anything else. *** [EKA | FROM VARIOUS SOURCES | UMDASCH-TUNING IN X | AUTOGEN.PL | GTPLANET | ALLCARINDEX ]

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