1991 Buick Roadmaster vs. 2009 Porsche 911
To start off, 2009 Porsche 911 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 Porsche 911 (321 HP @ 6800 RPM) has 144 more horse power than 1991 Buick Roadmaster. (177 HP @ 4200 RPM) In normal driving conditions, 2009 Porsche 911 should accelerate faster than 1991 Buick Roadmaster. With that said, vehicle weight also plays an important factor in acceleration. 1991 Buick Roadmaster weights approximately 545 kg more than 2009 Porsche 911.
Because 2009 Porsche 911 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 Porsche 911 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 23 more torque (in Nm) than 2009 Porsche 911. (370 Nm @ 4250 RPM). This means 1991 Buick Roadmaster will have an easier job in driving up hills or pulling heavy equipment than 2009 Porsche 911.
Compare all specifications:
| 1991 Buick Roadmaster | 2009 Porsche 911 | |
| Make | Buick | Porsche |
| Model | Roadmaster | 911 |
| Year Released | 1991 | 2009 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Rear |
| Engine Size | 5731 cc | 3596 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Horse Power | 177 HP | 321 HP |
| Engine RPM | 4200 RPM | 6800 RPM |
| Torque | 393 Nm | 370 Nm |
| Torque RPM | 2400 RPM | 4250 RPM |
| Engine Compression Ratio | 8.0:1 | 11.3:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1840 kg | 1295 kg |
| Vehicle Length | 5280 mm | 4430 mm |
| Vehicle Width | 2040 mm | 1320 mm |
| Vehicle Height | 1650 mm | 1860 mm |
| Wheelbase Size | 2950 mm | 2360 mm |
| Fuel Tank Capacity | 75 L | 67 L |
