1992 Buick Roadmaster vs. 2007 BMW 645
To start off, 2007 BMW 645 is newer by 15 year(s). Which means there will be less support and parts availability for 1992 Buick Roadmaster. In addition, the cost of maintenance, including insurance, on 1992 Buick Roadmaster would be higher. At 5,000 cc (8 cylinders), 1992 Buick Roadmaster is equipped with a bigger engine. In terms of performance, 2007 BMW 645 (328 HP @ 6100 RPM) has 160 more horse power than 1992 Buick Roadmaster. (168 HP @ 4200 RPM) In normal driving conditions, 2007 BMW 645 should accelerate faster than 1992 Buick Roadmaster. With that said, vehicle weight also plays an important factor in acceleration. 1992 Buick Roadmaster weights approximately 310 kg more than 2007 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, 2007 BMW 645 (450 Nm @ 3600 RPM) has 104 more torque (in Nm) than 1992 Buick Roadmaster. (346 Nm @ 2400 RPM). This means 2007 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 1992 Buick Roadmaster.
Compare all specifications:
| 1992 Buick Roadmaster | 2007 BMW 645 | |
| Make | Buick | BMW |
| Model | Roadmaster | 645 |
| Year Released | 1992 | 2007 |
| Body Type | Station Wagon | Coupe |
| Engine Position | Front | Front |
| Engine Size | 5000 cc | 4398 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 168 HP | 328 HP |
| Engine RPM | 4200 RPM | 6100 RPM |
| Torque | 346 Nm | 450 Nm |
| Torque RPM | 2400 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 | 5 doors | 2 doors |
| Vehicle Weight | 2000 kg | 1690 kg |
| Vehicle Length | 5540 mm | 4830 mm |
| Vehicle Width | 2040 mm | 1860 mm |
| Vehicle Height | 1540 mm | 1380 mm |
| Wheelbase Size | 2950 mm | 2790 mm |
