1992 Alfa Romeo 155 vs. 2003 BMW 645
To start off, 2003 BMW 645 is newer by 11 year(s). Which means there will be less support and parts availability for 1992 Alfa Romeo 155. In addition, the cost of maintenance, including insurance, on 1992 Alfa Romeo 155 would be higher. At 4,398 cc (8 cylinders), 2003 BMW 645 is equipped with a bigger engine. In terms of performance, 2003 BMW 645 (325 HP @ 6100 RPM) has 138 more horse power than 1992 Alfa Romeo 155. (187 HP @ 6000 RPM) In normal driving conditions, 2003 BMW 645 should accelerate faster than 1992 Alfa Romeo 155. With that said, vehicle weight also plays an important factor in acceleration. 2003 BMW 645 weights approximately 346 kg more than 1992 Alfa Romeo 155. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1992 Alfa Romeo 155 is four wheel drive (4WD), it will have significant more traction and grip than 2003 BMW 645. In wet, icy, snow, or gravel driving conditions, 1992 Alfa Romeo 155 will offer significantly more control. 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 BMW 645 (450 Nm @ 3600 RPM) has 159 more torque (in Nm) than 1992 Alfa Romeo 155. (291 Nm @ 2500 RPM). This means 2003 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 1992 Alfa Romeo 155.
Compare all specifications:
| 1992 Alfa Romeo 155 | 2003 BMW 645 | |
| Make | Alfa Romeo | BMW |
| Model | 155 | 645 |
| Year Released | 1992 | 2003 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 1995 cc | 4398 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 187 HP | 325 HP |
| Engine RPM | 6000 RPM | 6100 RPM |
| Torque | 291 Nm | 450 Nm |
| Torque RPM | 2500 RPM | 3600 RPM |
| Engine Bore Size | 84 mm | 92 mm |
| Engine Stroke Size | 90 mm | 82.7 mm |
| Engine Compression Ratio | 8.0:1 | 10.5:1 |
| Top Speed | 225 km/hour | 250 km/hour |
| Acceleration 0-100mph | 7 seconds | 5.9 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1344 kg | 1690 kg |
| Vehicle Length | 4450 mm | 4830 mm |
| Vehicle Width | 1710 mm | 1860 mm |
| Vehicle Height | 1410 mm | 1380 mm |
| Wheelbase Size | 2550 mm | 2890 mm |
| Fuel Tank Capacity | 60 L | 70 L |
