UK vs West Germany — 1975 vs 1978
| XJS V12 Coupe | Monza 3.0E GSE | |
|---|---|---|
| Horsepower | 285 hp | 180 hp |
| Torque | 320 lb-ft | 181 lb-ft |
| Engine Size | 5,343 cc | 2,969 cc |
| 0-60 mph | 7.6 sec | 8.0 sec |
| Top Speed | 150 mph | 137 mph |
| ¼ Mile | 15.7 sec | 16.0 sec |
| Weight | 3,954 lbs | 2,932 lbs |
| Wheelbase | 2,591 mm | 2,668 mm |
| Length | 4,869 mm | 4,692 mm |
| Units Produced | 115,413 | 43,728 |
| Original MSRP | $19,000 | — |
| Value (Excellent) | $55,000 | $30,000 |
| Collectibility | 6/10 | 5/10 |
| Rarity | 4/10 | 7/10 |
Two outstanding machines, each with compelling strengths. The 1975 Jaguar XJS V12 Coupe excels in more power, quicker acceleration, higher top speed, while the 1978 Opel Monza 3.0E GSE stands out for lighter weight, greater rarity, better value. The best advice? Drive both if you can, then follow your instincts.
Putting the 1975 Jaguar XJS V12 Coupe against the 1978 Opel Monza 3.0E GSE is a comparison that enthusiasts have debated for decades. Each car reflects distinct design philosophies shaped by different automotive cultures — UK versus West Germany. The 1975 Jaguar XJS V12 Coupe holds a clear advantage in raw power with 285 hp compared to 180 hp, a 105-horsepower difference that shapes the driving experience. Under the hood, the contrast is notable: the Jaguar XJS uses a V12 SOHC displacing 5,343 cc, while the Opel Monza relies on a Inline-6 OHC with 2,969 cc. In the sprint to 60 mph, the 1975 Jaguar XJS V12 Coupe edges ahead at 7.6 seconds versus 8.0 seconds. The Opel Monza carries a weight advantage, tipping the scales 1022 lbs lighter. Whether you prioritize driving dynamics, heritage, or aesthetic appeal, both contenders make a strong case for themselves.