1958 AC Ace vs. 2005 Opel Signum
To start off, 2005 Opel Signum is newer by 47 year(s). Which means there will be less support and parts availability for 1958 AC Ace. In addition, the cost of maintenance, including insurance, on 1958 AC Ace would be higher. At 3,174 cc (6 cylinders), 2005 Opel Signum is equipped with a bigger engine. In terms of performance, 2005 Opel Signum (208 HP @ 6000 RPM) has 83 more horse power than 1958 AC Ace. (125 HP @ 6000 RPM) In normal driving conditions, 2005 Opel Signum should accelerate faster than 1958 AC Ace. With that said, vehicle weight also plays an important factor in acceleration. 2005 Opel Signum weights approximately 714 kg more than 1958 AC Ace. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1958 AC Ace 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 1958 AC Ace. However, in wet, icy, snow, or gravel driving conditions, 2005 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, 2005 Opel Signum (300 Nm @ 4000 RPM) has 133 more torque (in Nm) than 1958 AC Ace. (167 Nm @ 4500 RPM). This means 2005 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 1958 AC Ace.
Compare all specifications:
| 1958 AC Ace | 2005 Opel Signum | |
| Make | AC | Opel |
| Model | Ace | Signum |
| Year Released | 1958 | 2005 |
| Body Type | Roadster | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 1969 cc | 3174 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 125 HP | 208 HP |
| Engine RPM | 6000 RPM | 6000 RPM |
| Torque | 167 Nm | 300 Nm |
| Torque RPM | 4500 RPM | 4000 RPM |
| Engine Bore Size | 66 mm | 87.5 mm |
| Engine Stroke Size | 96 mm | 88 mm |
| Engine Compression Ratio | 9.0:1 | 10.0:1 |
| Top Speed | 195 km/hour | 237 km/hour |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 896 kg | 1610 kg |
| Vehicle Length | 4010 mm | 4640 mm |
| Vehicle Width | 1540 mm | 1800 mm |
| Vehicle Height | 1270 mm | 1470 mm |
| Wheelbase Size | 2290 mm | 2840 mm |
| Fuel Tank Capacity | 59 L | 60 L |
