1991 Buick Roadmaster vs. 2011 Chevrolet Avalanche
To start off, 2011 Chevrolet Avalanche is newer by 20 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, 2011 Chevrolet Avalanche (310 HP @ 5200 RPM) has 133 more horse power than 1991 Buick Roadmaster. (177 HP @ 4200 RPM) In normal driving conditions, 2011 Chevrolet Avalanche should accelerate faster than 1991 Buick Roadmaster. With that said, vehicle weight also plays an important factor in acceleration. 1991 Buick Roadmaster weights approximately 579 kg more than 2011 Chevrolet Avalanche.
Because 2011 Chevrolet Avalanche 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, 2011 Chevrolet Avalanche 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, 2011 Chevrolet Avalanche (455 Nm @ 4400 RPM) has 62 more torque (in Nm) than 1991 Buick Roadmaster. (393 Nm @ 2400 RPM). This means 2011 Chevrolet Avalanche will have an easier job in driving up hills or pulling heavy equipment than 1991 Buick Roadmaster.
Compare all specifications:
| 1991 Buick Roadmaster | 2011 Chevrolet Avalanche | |
| Make | Buick | Chevrolet |
| Model | Roadmaster | Avalanche |
| Year Released | 1991 | 2011 |
| Body Type | Sedan | Pickup |
| Engine Position | Front | Front |
| Engine Size | 5731 cc | 5300 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 177 HP | 310 HP |
| Engine RPM | 4200 RPM | 5200 RPM |
| Torque | 393 Nm | 455 Nm |
| Torque RPM | 2400 RPM | 4400 RPM |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 6 seats |
| Number of Doors | 4 doors | 5 doors |
| Vehicle Weight | 1840 kg | 1261 kg |
| Vehicle Length | 5280 mm | 5630 mm |
| Vehicle Width | 2040 mm | 2020 mm |
| Vehicle Height | 1650 mm | 1950 mm |
| Wheelbase Size | 2950 mm | 3310 mm |
| Fuel Tank Capacity | 75 L | 117 L |
