Japan vs Germany — 1990 vs 1986
| Eunos Cosmo 20B Type S | M635CSi E24 | |
|---|---|---|
| Horsepower | 300 hp | 286 hp |
| Torque | 300 lb-ft | 251 lb-ft |
| Engine Size | 1,962 cc | 3,453 cc |
| 0-60 mph | 5.0 sec | 6.1 sec |
| Top Speed | 158 mph | 158 mph |
| ¼ Mile | 13.5 sec | 14.4 sec |
| Weight | 3,616 lbs | 3,461 lbs |
| Wheelbase | 2,750 mm | 2,625 mm |
| Length | 4,815 mm | 4,755 mm |
| Units Produced | 8,875 | 5,855 |
| Original MSRP | — | $54,500 |
| Value (Excellent) | $80,000 | $95,000 |
| Collectibility | 8/10 | 8/10 |
| Rarity | 8/10 | 7/10 |
The 1990 Mazda Eunos Cosmo 20B Type S holds an edge across most measurable criteria, offering quicker acceleration, better value. That said, the 1986 BMW M635CSi E24 brings its own distinct appeal and remains a compelling choice for enthusiasts who value BMW heritage. The right pick depends on whether you prioritize specifications or the intangible qualities that make a car truly special.
Putting the 1990 Mazda Eunos Cosmo 20B Type S against the 1986 BMW M635CSi E24 is a comparison that enthusiasts have debated for decades. Each car reflects distinct design philosophies shaped by different automotive cultures — Japan versus Germany. On paper, the two are remarkably close in power output, with the 1990 Mazda Eunos Cosmo 20B Type S producing 300 hp and the 1986 BMW M635CSi E24 delivering 286 hp. Under the hood, the contrast is notable: the Mazda Eunos Cosmo uses a Triple-Rotor Wankel (20B-REW) displacing 1,962 cc, while the BMW M635CSi relies on a Inline-6 DOHC with 3,453 cc. In the sprint to 60 mph, the 1990 Mazda Eunos Cosmo 20B Type S edges ahead at 5.0 seconds versus 6.1 seconds. Whether you prioritize driving dynamics, heritage, or aesthetic appeal, both contenders make a strong case for themselves.