Germany vs Germany — 1970 vs 1975
| Manta GT/E | Kadett GT/E Coupe | |
|---|---|---|
| Horsepower | 105 hp | 105 hp |
| Torque | 116 lb-ft | 117 lb-ft |
| Engine Size | 1,897 cc | 1,897 cc |
| 0-60 mph | 10.5 sec | 10.0 sec |
| Top Speed | 115 mph | 115 mph |
| ¼ Mile | 17.5 sec | 17.5 sec |
| Weight | 2,160 lbs | 2,116 lbs |
| Wheelbase | 2,420 mm | 2,518 mm |
| Length | 4,242 mm | 4,210 mm |
| Units Produced | 498,553 | 18,500 |
| Value (Excellent) | $30,000 | $35,000 |
| Collectibility | 6/10 | 6/10 |
| Rarity | 6/10 | 7/10 |
Numbers favor the 1975 Opel Kadett GT/E Coupe with quicker acceleration, greater rarity. The 1970 Opel Manta GT/E offers its unique character, and has its own devoted following. For those who let their heart decide, either car delivers a rewarding ownership experience.
Opel has long offered a diverse lineup, and comparing the 1970 Opel Manta GT/E with the 1975 Opel Kadett GT/E Coupe highlights the breadth of the marque's engineering philosophy. On paper, the two are remarkably close in power output, with the 1970 Opel Manta GT/E producing 105 hp and the 1975 Opel Kadett GT/E Coupe delivering 105 hp. Under the hood, the contrast is notable: the Opel Manta uses a Inline-4 CIH displacing 1,897 cc, while the Opel Kadett relies on a Inline-4 OHC with 1,897 cc. In the sprint to 60 mph, the 1975 Opel Kadett GT/E Coupe edges ahead at 10.0 seconds versus 10.5 seconds. Rarity plays a significant role here — with only 18,500 units built, the 1975 Opel Kadett GT/E Coupe is considerably scarcer than the Opel Manta's 498,553 examples. Both trade at comparable values on the collector market, making the choice between them largely one of personal preference.