1968 Opel Commodore vs. 2003 Opel Signum
To start off, 2003 Opel Signum is newer by 35 year(s). Which means there will be less support and parts availability for 1968 Opel Commodore. In addition, the cost of maintenance, including insurance, on 1968 Opel Commodore would be higher. At 3,175 cc (6 cylinders), 2003 Opel Signum is equipped with a bigger engine. In terms of performance, 2003 Opel Signum (209 HP @ 6200 RPM) has 59 more horse power than 1968 Opel Commodore. (150 HP @ 5800 RPM) In normal driving conditions, 2003 Opel Signum should accelerate faster than 1968 Opel Commodore. With that said, vehicle weight also plays an important factor in acceleration. 2003 Opel Signum weights approximately 335 kg more than 1968 Opel Commodore. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1968 Opel Commodore is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 1968 Opel Commodore. However, in wet, icy, snow, or gravel driving conditions, 2003 Opel Signum, being front wheel drive (FWD), will offer much better control with better grip. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2003 Opel Signum (300 Nm @ 4000 RPM) has 102 more torque (in Nm) than 1968 Opel Commodore. (198 Nm @ 4500 RPM). This means 2003 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 1968 Opel Commodore.
Compare all specifications:
| 1968 Opel Commodore | 2003 Opel Signum | |
| Make | Opel | Opel |
| Model | Commodore | Signum |
| Year Released | 1968 | 2003 |
| Engine Position | Front | Front |
| Engine Size | 2490 cc | 3175 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 150 HP | 209 HP |
| Engine RPM | 5800 RPM | 6200 RPM |
| Torque | 198 Nm | 300 Nm |
| Torque RPM | 4500 RPM | 4000 RPM |
| Engine Bore Size | 87 mm | 87.5 mm |
| Engine Stroke Size | 69.8 mm | 88 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Front |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1210 kg | 1545 kg |
| Vehicle Length | 4580 mm | 4640 mm |
| Vehicle Width | 1760 mm | 1800 mm |
| Vehicle Height | 1440 mm | 1470 mm |
| Wheelbase Size | 2670 mm | 2840 mm |
| Fuel Tank Capacity | 70 L | 60 L |
