Japan vs USA — 1967 vs 1963
| Cosmo Sport 110S (L10A) | Riviera 1st Generation | |
|---|---|---|
| Horsepower | 110 hp | 325 hp |
| Torque | 96 lb-ft | 425 lb-ft |
| Engine Size | 982 cc | 6,571 cc |
| 0-60 mph | 10.2 sec | 8.0 sec |
| Top Speed | 115 mph | 120 mph |
| ¼ Mile | 17.5 sec | 15.5 sec |
| Weight | 2,072 lbs | — |
| Wheelbase | 2,200 mm | 3,023 mm |
| Length | 4,140 mm | 5,334 mm |
| Units Produced | 1,519 | 40,000 |
| Value (Excellent) | $350,000 | $65,000 |
| Collectibility | 9/10 | 5/10 |
| Rarity | 9/10 | 5/10 |
The 1963 Buick Riviera 1st Generation emerges ahead in most objective measures, offering more power, quicker acceleration, higher top speed. The 1967 Mazda Cosmo Sport 110S (L10A) counters with greater rarity, stronger collectibility, but the numbers favor its rival. Still, both are remarkable machines, and the final choice often comes down to which driving experience speaks to you.
Putting the 1967 Mazda Cosmo Sport 110S (L10A) against the 1963 Buick Riviera 1st Generation is a comparison that enthusiasts have debated for decades. Each car reflects distinct design philosophies shaped by different automotive cultures — Japan versus USA. The 1963 Buick Riviera 1st Generation holds a clear advantage in raw power with 325 hp compared to 110 hp, a 215-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Mazda Cosmo Sport uses a Twin-Rotor Wankel 10A displacing 982 cc, while the Buick Riviera relies on a V8 OHV with 6,571 cc. In the sprint to 60 mph, the 1963 Buick Riviera 1st Generation edges ahead at 8.0 seconds versus 10.2 seconds. Rarity plays a significant role here — with only 1,519 units built, the 1967 Mazda Cosmo Sport 110S (L10A) is considerably scarcer than the Buick Riviera's 40,000 examples. On the collector market, the 1967 Mazda Cosmo Sport 110S (L10A) commands a significant premium over the 1963 Buick Riviera 1st Generation, reflecting differences in prestige and rarity. From a collectibility standpoint, the 1967 Mazda Cosmo Sport 110S (L10A) rates higher among enthusiasts and auction houses.