To understand the Eunos Cosmo, you have to understand the air in Tokyo circa 1989. It was the peak of the “Bubble Era,” a brief window in history where logic was suspended. Mazda, emboldened by limitless capital, hatched a plan to create a luxury flagship that would silence Jaguar and BMW. They aimed for the stars. They ended up with the Cosmo.
Absurdity as Standard
Think of this car as a capsule of excess! It wasn’t built; it was curated. The interior veneers were sliced from French elm and finished in Italy, a move that makes zero financial sense today.
It wasn’t just luxury; it was sci-fi. The interior was designed as a ‘continuous ring’ wrapping around the passengers like a lounge. And the buttons? They were tiny and labelled with phrases that sounded like a bad translation of Star Trek, such as ‘Full Logical Control’ and ‘Diversity System.’ Nobody knew what they meant, but they felt expensive.
While the rest of the world was unfolding paper maps, the Cosmo had a CRT touchscreen with GPS navigation. And the suspension? They put four dampers on the rear wheels alone. Two per side. Why? Just because they could.
The Rotary V12
Forget the leather. The real insanity was buried under the hood. You remember the 13B engine from the RX-7? It’s iconic, indeed. But the 20B-REW? That’s the Holy Grail.
Mazda added a third rotor. Not just for power—though it had plenty—but for the character. A two-rotor buzzes like a chainsaw. A three-rotor hums. Mathematically, its firing frequency mimics a V12. To control this soundtrack, engineers installed butterfly valves in the exhaust—technology unheard of in 1990. At low RPM, they closed to keep the car silent as a library. At full throttle, they opened to unleash the rotary scream. It was active noise control, analogue style. They strapped two sequential turbos to it—another world first—and claimed it pushed 280 HP. A total lie, obviously. The “Gentleman’s Agreement” said 280, but the dyno said “way more.” It was a torque monster wearing a tuxedo.
The Crash
So why isn’t it an icon like the Lexus LS400? Because the music stopped right before it was possible, the Japanese economic bubble burst with the force of a nuclear bomb. The Amati brand died in the womb.
The Cosmo was left stranded—a dinosaur wandering into a new ice age. It was too expensive, it drank fuel like a cargo ship, and it was trapped in the domestic market. It remains a beautiful tragedy—a capsule of pure, unfiltered hubris, frozen in time.
