1991 Buick Roadmaster vs. 2004 GMC Sierra
To start off, 2004 GMC Sierra is newer by 13 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 5,965 cc (8 cylinders), 2004 GMC Sierra is equipped with a bigger engine. In terms of performance, 2004 GMC Sierra (300 HP) has 123 more horse power than 1991 Buick Roadmaster. (177 HP) In normal driving conditions, 2004 GMC Sierra should accelerate faster than 1991 Buick Roadmaster. With that said, vehicle weight also plays an important factor in acceleration. 2004 GMC Sierra weights approximately 666 kg more than 1991 Buick Roadmaster. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2004 GMC Sierra 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, 2004 GMC Sierra 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, 2004 GMC Sierra (488 Nm) has 95 more torque (in Nm) than 1991 Buick Roadmaster. (393 Nm). This means 2004 GMC Sierra will have an easier job in driving up hills or pulling heavy equipment than 1991 Buick Roadmaster.
Compare all specifications:
| 1991 Buick Roadmaster | 2004 GMC Sierra | |
| Make | Buick | GMC |
| Model | Roadmaster | Sierra |
| Year Released | 1991 | 2004 |
| Body Type | Sedan | Pickup |
| Engine Position | Front | Front |
| Engine Size | 5731 cc | 5965 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 177 HP | 300 HP |
| Torque | 393 Nm | 488 Nm |
| Engine Compression Ratio | 8.0:1 | 9.4:1 |
| Drive Type | Rear | 4WD |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1840 kg | 2506 kg |
| Vehicle Length | 5280 mm | 5790 mm |
| Vehicle Width | 2040 mm | 2000 mm |
| Vehicle Height | 1650 mm | 1900 mm |
| Wheelbase Size | 2950 mm | 3650 mm |
| Fuel Tank Capacity | 75 L | 98 L |
