1951 Allard J2 vs. 2003 Opel Vectra
To start off, 2003 Opel Vectra is newer by 52 year(s). Which means there will be less support and parts availability for 1951 Allard J2. In addition, the cost of maintenance, including insurance, on 1951 Allard J2 would be higher. At 5,415 cc (8 cylinders), 1951 Allard J2 is equipped with a bigger engine. In terms of performance, 1951 Allard J2 (158 HP @ 3800 RPM) has 59 more horse power than 2003 Opel Vectra. (99 HP @ 4400 RPM). In normal driving conditions, 1951 Allard J2 should accelerate faster than 2003 Opel Vectra. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Vectra weights approximately 515 kg more than 1951 Allard J2.
Compare all specifications:
| 1951 Allard J2 | 2003 Opel Vectra | |
| Make | Allard | Opel |
| Model | J2 | Vectra |
| Year Released | 1951 | 2003 |
| Engine Position | Front | Front |
| Engine Size | 5415 cc | 1998 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 158 HP | 99 HP |
| Engine RPM | 3800 RPM | 4400 RPM |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 980 kg | 1495 kg |
| Vehicle Length | 3780 mm | 4830 mm |
| Vehicle Width | 1730 mm | 1800 mm |
| Vehicle Height | 1300 mm | 1510 mm |
| Wheelbase Size | 2550 mm | 2640 mm |
| Fuel Tank Capacity | 38 L | 60 L |
