1996 Buick Roadmaster vs. 2005 BMW 645
To start off, 2005 BMW 645 is newer by 9 year(s). Which means there will be less support and parts availability for 1996 Buick Roadmaster. In addition, the cost of maintenance, including insurance, on 1996 Buick Roadmaster would be higher. At 5,733 cc (8 cylinders), 1996 Buick Roadmaster is equipped with a bigger engine. In terms of performance, 2005 BMW 645 (338 HP @ 6100 RPM) has 82 more horse power than 1996 Buick Roadmaster. (256 HP @ 5000 RPM) In normal driving conditions, 2005 BMW 645 should accelerate faster than 1996 Buick Roadmaster. With that said, vehicle weight also plays an important factor in acceleration. 1996 Buick Roadmaster weights approximately 135 kg more than 2005 BMW 645.
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, 1996 Buick Roadmaster (447 Nm @ 3200 RPM) has 8 more torque (in Nm) than 2005 BMW 645. (439 Nm @ 3600 RPM). This means 1996 Buick Roadmaster will have an easier job in driving up hills or pulling heavy equipment than 2005 BMW 645.
Compare all specifications:
| 1996 Buick Roadmaster | 2005 BMW 645 | |
| Make | Buick | BMW |
| Model | Roadmaster | 645 |
| Year Released | 1996 | 2005 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 5733 cc | 4390 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 256 HP | 338 HP |
| Engine RPM | 5000 RPM | 6100 RPM |
| Torque | 447 Nm | 439 Nm |
| Torque RPM | 3200 RPM | 3600 RPM |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1850 kg | 1715 kg |
| Vehicle Length | 5490 mm | 4830 mm |
| Vehicle Width | 1990 mm | 1860 mm |
| Vehicle Height | 1450 mm | 1380 mm |
| Wheelbase Size | 2950 mm | 2790 mm |
