2009 Acura RDX vs. 1991 Buick Roadmaster
To start off, 2009 Acura RDX is newer by 18 year(s). Which means there will be less support and parts availability for 1991 Buick Roadmaster. In addition, the cost of maintenance, including insurance, on 1991 Buick Roadmaster would be higher. At 5,731 cc (8 cylinders), 1991 Buick Roadmaster is equipped with a bigger engine. In terms of performance, 2009 Acura RDX (237 HP @ 6000 RPM) has 60 more horse power than 1991 Buick Roadmaster. (177 HP @ 4200 RPM). In normal driving conditions, 2009 Acura RDX should accelerate faster than 1991 Buick Roadmaster. With that said, vehicle weight also plays an important factor in acceleration. 1991 Buick Roadmaster weights approximately 56 kg more than 2009 Acura RDX.
Because 2009 Acura RDX is four wheel drive (4WD), it will have significant more traction and grip than 1991 Buick Roadmaster. In wet, icy, snow, or gravel driving conditions, 2009 Acura RDX will offer significantly more control. 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 Buick Roadmaster (393 Nm @ 2400 RPM) has 133 more torque (in Nm) than 2009 Acura RDX. (260 Nm @ 4500 RPM). This means 1991 Buick Roadmaster will have an easier job in driving up hills or pulling heavy equipment than 2009 Acura RDX.
Compare all specifications:
| 2009 Acura RDX | 1991 Buick Roadmaster | |
| Make | Acura | Buick |
| Model | RDX | Roadmaster |
| Year Released | 2009 | 1991 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2297 cc | 5731 cc |
| Engine Cylinders | 4 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Horse Power | 237 HP | 177 HP |
| Engine RPM | 6000 RPM | 4200 RPM |
| Torque | 260 Nm | 393 Nm |
| Torque RPM | 4500 RPM | 2400 RPM |
| Engine Compression Ratio | 8.8:1 | 8.0:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1784 kg | 1840 kg |
| Vehicle Length | 4600 mm | 5280 mm |
| Vehicle Width | 1880 mm | 2040 mm |
| Vehicle Height | 1660 mm | 1650 mm |
| Wheelbase Size | 2660 mm | 2950 mm |
| Fuel Tank Capacity | 68 L | 75 L |
