Germany vs Germany — 1975 vs 1982
| Kadett GT/E Coupe | Manta 400 | |
|---|---|---|
| Horsepower | 105 hp | 275 hp |
| Torque | 117 lb-ft | 207 lb-ft |
| Engine Size | 1,897 cc | 2,420 cc |
| 0-60 mph | 10.0 sec | 6.2 sec |
| Top Speed | 115 mph | 143 mph |
| ¼ Mile | 17.5 sec | 14.5 sec |
| Weight | 2,116 lbs | 2,337 lbs |
| Wheelbase | 2,518 mm | 2,518 mm |
| Length | 4,210 mm | 4,465 mm |
| Units Produced | 18,500 | 245 |
| Value (Excellent) | $35,000 | $350,000 |
| Collectibility | 6/10 | 9/10 |
| Rarity | 7/10 | 9/10 |
The 1982 Opel Manta 400 emerges ahead in most objective measures, offering more power, quicker acceleration, higher top speed. The 1975 Opel Kadett GT/E Coupe counters with lighter weight, better value, 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.
Within the Opel stable, the 1975 Opel Kadett GT/E Coupe and 1982 Opel Manta 400 represent different approaches to performance and purpose. Both carry the Opel badge, yet each carves out its own distinct identity. The 1982 Opel Manta 400 holds a clear advantage in raw power with 275 hp compared to 105 hp, a 170-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Opel Kadett uses a Inline-4 OHC displacing 1,897 cc, while the Opel Manta relies on a Inline-4 DOHC 16V (CIH-based) with 2,420 cc. In the sprint to 60 mph, the 1982 Opel Manta 400 edges ahead at 6.2 seconds versus 10.0 seconds. The Opel Kadett carries a weight advantage, tipping the scales 221 lbs lighter. Rarity plays a significant role here — with only 245 units built, the 1982 Opel Manta 400 is considerably scarcer than the Opel Kadett's 18,500 examples. On the collector market, the 1982 Opel Manta 400 commands a significant premium over the 1975 Opel Kadett GT/E Coupe, reflecting differences in prestige and rarity. From a collectibility standpoint, the 1982 Opel Manta 400 rates higher among enthusiasts and auction houses.