1991 Opel Astra vs. 2004 Alfa Romeo 166
To start off, 2004 Alfa Romeo 166 is newer by 13 year(s). Which means there will be less support and parts availability for 1991 Opel Astra. In addition, the cost of maintenance, including insurance, on 1991 Opel Astra would be higher. At 3,177 cc (6 cylinders), 2004 Alfa Romeo 166 is equipped with a bigger engine. In terms of performance, 2004 Alfa Romeo 166 (247 HP @ 6200 RPM) has 191 more horse power than 1991 Opel Astra. (56 HP @ 4600 RPM) In normal driving conditions, 2004 Alfa Romeo 166 should accelerate faster than 1991 Opel Astra. With that said, vehicle weight also plays an important factor in acceleration. 2004 Alfa Romeo 166 weights approximately 505 kg more than 1991 Opel Astra. 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, 2004 Alfa Romeo 166 (289 Nm @ 4800 RPM) has 184 more torque (in Nm) than 1991 Opel Astra. (105 Nm @ 2400 RPM). This means 2004 Alfa Romeo 166 will have an easier job in driving up hills or pulling heavy equipment than 1991 Opel Astra.
Compare all specifications:
| 1991 Opel Astra | 2004 Alfa Romeo 166 | |
| Make | Opel | Alfa Romeo |
| Model | Astra | 166 |
| Year Released | 1991 | 2004 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 1698 cc | 3177 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Horse Power | 56 HP | 247 HP |
| Engine RPM | 4600 RPM | 6200 RPM |
| Torque | 105 Nm | 289 Nm |
| Torque RPM | 2400 RPM | 4800 RPM |
| Engine Bore Size | 82.5 mm | 93 mm |
| Engine Stroke Size | 79.5 mm | 78 mm |
| Engine Compression Ratio | 23.0:1 | 10.5:1 |
| Top Speed | 150 km/hour | 245 km/hour |
| Drive Type | Front | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1035 kg | 1540 kg |
| Vehicle Length | 4250 mm | 4730 mm |
| Vehicle Width | 1690 mm | 1810 mm |
| Vehicle Height | 1430 mm | 1420 mm |
| Wheelbase Size | 2530 mm | 2550 mm |
| Fuel Tank Capacity | 52 L | 69 L |
