The chassis was reportedly crushed. The V10 engines were detuned, shoved into a drawer, and forgotten. Or so we thought.
In the annals of automotive history, certain codes become legend: 250 GTO, 959, R34. Others, like Honda 27-01 , remain whispers—ghost codes that haunt the periphery of enthusiast forums and forgotten patent filings. What is 27-01? It is not a production vehicle. It is not a chassis code. It is, I believe, the key to understanding Honda’s most daring road not taken. honda 27-01
The chassis was carbon fiber, sourced from the same looms that made the MP4/6. But the true innovation was the suspension: a computer-controlled active system that could lean into corners like a motorcycle. The patent for this system (filed January 27, 1991—hence “27-01”?) shows a complex array of hydraulic rams and gyroscopic sensors. It was decades ahead of its time. The chassis was reportedly crushed
The brief, as reconstructed from interviews with retired engineers, was audacious. Mid-engine, yes. But instead of a V6, 27-01 would house a bespoke, 3.5-liter V10. Why a V10? Because Honda’s F1 engineers had just finished studying the life cycle of a V10 crank shaft at 22,000 rpm (in test cells). They wanted a road engine that screamed to 12,000 rpm—a sound described by one witness as “a sheet of titanium being torn in half by an angel.” In the annals of automotive history, certain codes
Because in 2017, a YouTuber touring a private collection in Chiba, Japan, filmed a brief, 2-second shot of a tarp-covered shape. Under the tarp was a glimpse of a carbon-fiber monocoque and a set of five-lug wheels that match no known Honda production part. The curator muttered a single word before closing the door: “ Nijuunana-ichi .” Twenty-seven-one.
Honda 27-01 is the ultimate “what if.” It represents the moment Honda could have beaten the McLaren F1 to the punch, could have invented the active-suspension hypercar a decade before Ferrari. Instead, it remains a phantom—a code name for ambition that was too pure, too expensive, and too early.