1991 Mazda 121 vs. 2008 Opel Signum
To start off, 2008 Opel Signum is newer by 17 year(s). Which means there will be less support and parts availability for 1991 Mazda 121. In addition, the cost of maintenance, including insurance, on 1991 Mazda 121 would be higher. At 2,197 cc (4 cylinders), 2008 Opel Signum is equipped with a bigger engine. In terms of performance, 2008 Opel Signum (153 HP @ 5600 RPM) has 82 more horse power than 1991 Mazda 121. (71 HP @ 6000 RPM) In normal driving conditions, 2008 Opel Signum should accelerate faster than 1991 Mazda 121. With that said, vehicle weight also plays an important factor in acceleration. 2008 Opel Signum weights approximately 635 kg more than 1991 Mazda 121. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are front wheel drive (FWD). Which offers better traction when its slippery than rear wheel drive vehicles. 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, 2008 Opel Signum (220 Nm @ 3800 RPM) has 116 more torque (in Nm) than 1991 Mazda 121. (104 Nm @ 3700 RPM). This means 2008 Opel Signum will have an easier job in driving up hills or pulling heavy equipment than 1991 Mazda 121.
Compare all specifications:
| 1991 Mazda 121 | 2008 Opel Signum | |
| Make | Mazda | Opel |
| Model | 121 | Signum |
| Year Released | 1991 | 2008 |
| Engine Position | Front | Front |
| Engine Size | 1323 cc | 2197 cc |
| Engine Cylinders | 4 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 71 HP | 153 HP |
| Engine RPM | 6000 RPM | 5600 RPM |
| Torque | 104 Nm | 220 Nm |
| Torque RPM | 3700 RPM | 3800 RPM |
| Engine Bore Size | 71 mm | 86 mm |
| Engine Stroke Size | 83.6 mm | 94.6 mm |
| Engine Compression Ratio | 9.4:1 | 12.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 155 km/hour | 211 km/hour |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 900 kg | 1535 kg |
| Vehicle Length | 3820 mm | 4640 mm |
| Vehicle Width | 1660 mm | 1800 mm |
| Vehicle Height | 1480 mm | 1470 mm |
| Wheelbase Size | 2400 mm | 2840 mm |
| Fuel Tank Capacity | 43 L | 60 L |
