USA vs USA — 1987 vs 1965
| Regal GNX | Riviera Gran Sport 425 | |
|---|---|---|
| Horsepower | 276 hp | 360 hp |
| Torque | 360 lb-ft | 465 lb-ft |
| Engine Size | 3,791 cc | 6,965 cc |
| 0-60 mph | 4.7 sec | 7.2 sec |
| Top Speed | 124 mph | 130 mph |
| ¼ Mile | 13.5 sec | 15.3 sec |
| Weight | 3,640 lbs | 4,500 lbs |
| Wheelbase | 2,769 mm | 3,073 mm |
| Length | 5,023 mm | 5,410 mm |
| Units Produced | 547 | 3,961 |
| Original MSRP | $29,290 | $4,424 |
| Value (Excellent) | $275,000 | $95,000 |
| Collectibility | 10/10 | 8/10 |
| Rarity | 10/10 | 7/10 |
This matchup is remarkably close. The 1987 Buick Regal GNX offers quicker acceleration, lighter weight, greater rarity, while the 1965 Buick Riviera Gran Sport 425 counters with more power, higher top speed, better value. Neither holds a decisive advantage, making this a true enthusiast's dilemma. Your choice ultimately depends on which driving philosophy resonates more with you.
Within the Buick stable, the 1987 Buick Regal GNX and 1965 Buick Riviera Gran Sport 425 represent different approaches to performance and purpose. Both carry the Buick badge, yet each carves out its own distinct identity. The 1965 Buick Riviera Gran Sport 425 holds a clear advantage in raw power with 360 hp compared to 276 hp, a 84-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Buick Regal uses a V6 Turbo displacing 3,791 cc, while the Buick Riviera relies on a V8 OHV (Buick 425 Nailhead) with 6,965 cc. In the sprint to 60 mph, the 1987 Buick Regal GNX edges ahead at 4.7 seconds versus 7.2 seconds. The Buick Regal carries a weight advantage, tipping the scales 860 lbs lighter. Rarity plays a significant role here — with only 547 units built, the 1987 Buick Regal GNX is considerably scarcer than the Buick Riviera's 3,961 examples. On the collector market, the 1987 Buick Regal GNX commands a significant premium over the 1965 Buick Riviera Gran Sport 425, reflecting differences in prestige and rarity. From a collectibility standpoint, the 1987 Buick Regal GNX rates higher among enthusiasts and auction houses.