1998 BMW 845 vs. 2004 BMW 645
To start off, 2004 BMW 645 is newer by 6 year(s). Which means there will be less support and parts availability for 1998 BMW 845. In addition, the cost of maintenance, including insurance, on 1998 BMW 845 would be higher. Both 1998 BMW 845 and 2004 BMW 645 are equipped with a 4,398 cc engine. In terms of performance, 2004 BMW 645 (328 HP @ 6100 RPM) has 46 more horse power than 1998 BMW 845. (282 HP @ 5700 RPM) In normal driving conditions, 2004 BMW 645 should accelerate faster than 1998 BMW 845. With that said, vehicle weight also plays an important factor in acceleration. 2004 BMW 645 weights approximately 65 kg more than 1998 BMW 845. 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 (451 Nm @ 3600 RPM) has 31 more torque (in Nm) than 1998 BMW 845. (420 Nm @ 3900 RPM). This means 2004 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 1998 BMW 845. 2004 BMW 645 has automatic transmission and 1998 BMW 845 has manual transmission. 1998 BMW 845 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2004 BMW 645 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1998 BMW 845 | 2004 BMW 645 | |
| Make | BMW | BMW |
| Model | 845 | 645 |
| Year Released | 1998 | 2004 |
| Body Type | Coupe | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 4398 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 282 HP | 328 HP |
| Engine RPM | 5700 RPM | 6100 RPM |
| Torque | 420 Nm | 451 Nm |
| Torque RPM | 3900 RPM | 3600 RPM |
| Engine Bore Size | 92 mm | 92 mm |
| Engine Stroke Size | 82.7 mm | 82.7 mm |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1750 kg | 1815 kg |
| Vehicle Length | 4790 mm | 4830 mm |
| Vehicle Width | 1860 mm | 1860 mm |
| Vehicle Height | 1350 mm | 1380 mm |
| Wheelbase Size | 2690 mm | 2790 mm |
