Mazda
Eunos Cosmo (JC)

Why it matters

The Eunos Cosmo was the third-generation Cosmo and the world's first mass-production car with a three-rotor engine and sequential twin turbochargers. It was also among the first cars with factory GPS navigation, and it used a dedicated platform that no other car shared.

How rare is it?

Six separate kinds of rarity – never combined into one number.

Each kind of rarity is rated separately and never combined.

Production

Every figure says what it counts.

Independent counts (e.g. engine and colour) are never combined into a calculated figure. Surviving examples are never presented as original production.

History

The Eunos Cosmo went on sale in Japan in April 1990 through the new Eunos dealer channel and remained on the market until 1995. It was offered as a two-door, four-seat coupe with a four-speed automatic only, with either a two-rotor 13B of 230 PS or the three-rotor 20B-REW of 280 PS. Mazda's table lists 8,875 cars built, without a split by engine.

A Mazda-supplied navigation and control system (CCS) was fitted to some cars, depending on grade and date. The car was sold only in Japan and stayed right-hand drive. Mazda later cancelled its Eunos plans during the Japanese financial downturn.

Technical specifications

Engine

Transmission & drivetrain

Chassis, body & dimensions

Performance

“Not yet verified” means no source has been checked for that value yet. Nothing is estimated to fill a gap.

Identification guide

How to tell an original from a replica or later conversion.

Early cars are E-JC3SE (13B) and E-JCESE (20B); later cars are E-JC3S and E-JCES. Grades are Type S, Type E and Type SX, and the Type E carries leather and a CD player with an optional CCS navigation computer. All cars have a four-speed automatic, so a manual gearbox is a conversion. Mazda's recall 592 for an air-conditioning fuse covered 8,853 cars.

Sources

Each number links to the exact facts it supports.

1. 1
   Mazda Eunos Cosmo JC guide Level B Christopher Weydert · JDMBUYSELL · 2026-10-11

   • Mazda lists 8,875 Eunos Cosmos built, with no 13B and 20B split
   • 13B twin turbo (1,308 cc) or 20B-REW (1,962 cc)
   • Front engine; no factory manual
   • The September 1991 Motor-Fan catalogue lists the 20B cars at 1,962 cc
   • rated by Mazda at 280 PS net at 6,500 rpm
   • 41.0 kgf·m net at 3,000 rpm
   • Rear-wheel drive, four-speed automatic only
   • four-speed automatic only
   • front double-wishbone suspension and a rear multilink with twin dampers
   • rear multilink with twin dampers
   • ventilated discs front and rear
   • on a 2,750 mm wheelbase with tracks of 1,520 and 1,510 mm
   • 4,815 mm long, 1,795 mm wide and 1,305 mm high
   • tracks of 1,520 and 1,510 mm
   • The booklet lists 1,610 kg for the 20B car
   • a 72-litre tank for unleaded premium fuel

   Accessed 2026-11-12
2. 2
   Rare Rides: a 1990 Mazda Eunos Cosmo – The Truth About Cars Level C

   • 8875 total built

   Accessed 2026-11-12
3. 3
   Cosmo (1975-) Level A Mazda Motor Corporation

   • three-rotor rotary engine and a sequential twin turbocharger
   • maximum power at 280ps and maximum torque at 41.0 kg-m
   • maximum torque at 41.0 kg-m

   Accessed 2026-11-12