1990 BMW 320 vs. 2004 BMW 645
To start off, 2004 BMW 645 is newer by 14 year(s). Which means there will be less support and parts availability for 1990 BMW 320. In addition, the cost of maintenance, including insurance, on 1990 BMW 320 would be higher. At 4,398 cc (8 cylinders), 2004 BMW 645 is equipped with a bigger engine. In terms of performance, 2004 BMW 645 (328 HP @ 6100 RPM) has 213 more horse power than 1990 BMW 320. (115 HP @ 4800 RPM) In normal driving conditions, 2004 BMW 645 should accelerate faster than 1990 BMW 320. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW 645 weights approximately 454 kg more than 1990 BMW 320. 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, 2004 BMW 645 (450 Nm) has 226 more torque (in Nm) than 1990 BMW 320. (224 Nm). This means 2004 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 1990 BMW 320.
Compare all specifications:
| 1990 BMW 320 | 2004 BMW 645 | |
| Make | BMW | BMW |
| Model | 320 | 645 |
| Year Released | 1990 | 2004 |
| Body Type | Station Wagon | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2199 cc | 4398 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 115 HP | 328 HP |
| Engine RPM | 4800 RPM | 6100 RPM |
| Torque | 224 Nm | 450 Nm |
| Engine Compression Ratio | 8.8:1 | 10.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1236 kg | 1690 kg |
| Vehicle Length | 4330 mm | 4830 mm |
| Vehicle Width | 1650 mm | 1860 mm |
| Vehicle Height | 1390 mm | 1380 mm |
| Wheelbase Size | 2580 mm | 2830 mm |
