1987 Alfa Romeo 90 vs. 2006 BMW 645
To start off, 2006 BMW 645 is newer by 19 year(s). Which means there will be less support and parts availability for 1987 Alfa Romeo 90. In addition, the cost of maintenance, including insurance, on 1987 Alfa Romeo 90 would be higher. At 4,398 cc (8 cylinders), 2006 BMW 645 is equipped with a bigger engine. In terms of performance, 2006 BMW 645 (328 HP @ 6100 RPM) has 198 more horse power than 1987 Alfa Romeo 90. (130 HP @ 4200 RPM) In normal driving conditions, 2006 BMW 645 should accelerate faster than 1987 Alfa Romeo 90. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 645 weights approximately 730 kg more than 1987 Alfa Romeo 90. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front 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, 2006 BMW 645 (450 Nm) has 274 more torque (in Nm) than 1987 Alfa Romeo 90. (176 Nm). This means 2006 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 1987 Alfa Romeo 90.
Compare all specifications:
| 1987 Alfa Romeo 90 | 2006 BMW 645 | |
| Make | Alfa Romeo | BMW |
| Model | 90 | 645 |
| Year Released | 1987 | 2006 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 1997 cc | 4398 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 130 HP | 328 HP |
| Engine RPM | 4200 RPM | 6100 RPM |
| Torque | 176 Nm | 450 Nm |
| Engine Compression Ratio | 10.0:1 | 10.0:1 |
| Drive Type | Rear | Rear |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1080 kg | 1810 kg |
| Vehicle Length | 4400 mm | 4830 mm |
| Vehicle Width | 1650 mm | 1860 mm |
| Vehicle Height | 1430 mm | 1380 mm |
| Wheelbase Size | 2520 mm | 2790 mm |
