Mazda Cosmo JC
The world's only triple-rotor production car and a high-tech bubble-era masterpiece.
- Power
- 276 bhp
- 0–60 mph
- 5.8 s
- Top speed
- 158 mph
- Est. value
- $20k–$45k
About the Mazda Cosmo JC
The JC-generation Eunos Cosmo was Mazda's flagship luxury grand tourer, designed to showcase the pinnacle of rotary technology during Japan's 'bubble economy'. It remains the only production car ever fitted with a triple-rotor engine, the 20B-REW, which utilised a world-first sequential twin-turbocharging system for a production vehicle. The Type E (Executive) trim focused on supreme comfort, featuring a wrap-around leather interior and the pioneering 'Car Control System' with the world's first built-in GPS navigation. Despite its performance potential, it was exclusively paired with a four-speed automatic transmission to maintain its character as a smooth, high-speed cruiser.
Mazda Cosmo JC specs
The Mazda Cosmo JC produces 276 bhp (206 kW) and 402 Nm (296 lb-ft) of torque. It reaches 60 mph in 5.8 seconds and has a top speed of 158 mph (255 km/h).
| Make | Mazda |
|---|---|
| Model | Cosmo |
| Generation | JC |
| Trim | 20B Type E |
| Years | 1990–1995 |
| Type | JDM |
| Body style | Coupé |
| Country | Japan |
| Production | About 8,875 built |
| Engine | 2.0-litre triple-rotor twin-turbocharged |
|---|---|
| Displacement | 1,962 cc (2.0 litres) |
| Induction | Twin-turbocharged |
| Power | 276 bhp (206 kW) at 6,500 rpm |
| Torque | 402 Nm (296 lb-ft) |
| Redline | 7,000 rpm |
| 0–60 mph | 5.8 s |
| Top speed | 158 mph (255 km/h) |
| Transmission | 4-speed automatic |
| Drivetrain | Rear-wheel drive |
| Weight | 1,610 kg (3,549 lb) |
| Power-to-weight | 171 bhp per tonne |
Typical figures for the standard car; options, markets and model years vary. Where our specs come from
How much is a Mazda Cosmo JC worth?
A typical Mazda Cosmo JC is estimated to be worth $20,000 – $45,000 (about £15,000 – £34,000).
Values are directional estimates for a typical example, not appraisals. Condition, mileage, history and specification all change what a real car is worth. Pound figures use the exchange rate of 3 November 2026. How values are estimated
Mazda Cosmo JC rarity in CarSpot
The Mazda Cosmo JC is a Rare card in CarSpot, with a rarity score of 42 out of 100. Performance cars, typically worth around £50,000 to £100,000. A Rare card is worth 40 XP.
Each model's tier starts from a 0–100 score based on its value plus its power or production numbers. Once enough players have spotted a model, how often it is spotted can move it up or down one tier. How CarSpot rarity works
Rarity is a collectible game mechanic, not an assessment of real-world scarcity or value.
Mazda Cosmo JC fun facts
- The Eunos Cosmo was the first production car in the world to offer a built-in GPS navigation system, displayed on a CRT colour touchscreen.
- While officially rated at 276 hp due to the Japanese 'Gentlemen's Agreement', the 20B engine is widely known to produce over 300 hp in unrestricted form.
- The 20B-REW engine is so smooth and torquey that Mazda engineers frequently compared its power delivery to that of a contemporary V12 engine.
