1991 Buick Roadmaster vs. 1991 Infiniti Q45
To start off, both 1991 Buick Roadmaster and 1991 Infiniti Q45 were released in the same year (1991). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 5,731 cc (8 cylinders), 1991 Buick Roadmaster is equipped with a bigger engine. In terms of performance, 1991 Infiniti Q45 (277 HP @ 6000 RPM) has 100 more horse power than 1991 Buick Roadmaster. (177 HP @ 4200 RPM) In normal driving conditions, 1991 Infiniti Q45 should accelerate faster than 1991 Buick Roadmaster. With that said, vehicle weight also plays an important factor in acceleration. 1991 Buick Roadmaster weights approximately 90 kg more than 1991 Infiniti Q45.
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, 1991 Infiniti Q45 (397 Nm @ 4000 RPM) has 4 more torque (in Nm) than 1991 Buick Roadmaster. (393 Nm @ 2400 RPM). This means 1991 Infiniti Q45 will have an easier job in driving up hills or pulling heavy equipment than 1991 Buick Roadmaster.
Compare all specifications:
| 1991 Buick Roadmaster | 1991 Infiniti Q45 | |
| Make | Buick | Infiniti |
| Model | Roadmaster | Q45 |
| Year Released | 1991 | 1991 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 5731 cc | 4494 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 177 HP | 277 HP |
| Engine RPM | 4200 RPM | 6000 RPM |
| Torque | 393 Nm | 397 Nm |
| Torque RPM | 2400 RPM | 4000 RPM |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1840 kg | 1750 kg |
| Vehicle Length | 5280 mm | 5080 mm |
| Vehicle Width | 2040 mm | 1830 mm |
| Vehicle Height | 1650 mm | 1440 mm |
| Wheelbase Size | 2950 mm | 2890 mm |
| Fuel Tank Capacity | 75 L | 72 L |
