1991 Buick Roadmaster vs. 1985 Volvo 780
To start off, 1991 Buick Roadmaster is newer by 6 year(s). Which means there will be less support and parts availability for 1985 Volvo 780. In addition, the cost of maintenance, including insurance, on 1985 Volvo 780 would be higher. At 5,731 cc (8 cylinders), 1991 Buick Roadmaster is equipped with a bigger engine. In terms of performance, 1991 Buick Roadmaster (177 HP @ 4200 RPM) has 50 more horse power than 1985 Volvo 780. (127 HP @ 4800 RPM). In normal driving conditions, 1991 Buick Roadmaster should accelerate faster than 1985 Volvo 780. With that said, vehicle weight also plays an important factor in acceleration. 1991 Buick Roadmaster weights approximately 370 kg more than 1985 Volvo 780. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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 Buick Roadmaster (393 Nm @ 2400 RPM) has 143 more torque (in Nm) than 1985 Volvo 780. (250 Nm @ 2400 RPM). This means 1991 Buick Roadmaster will have an easier job in driving up hills or pulling heavy equipment than 1985 Volvo 780. 1991 Buick Roadmaster has automatic transmission and 1985 Volvo 780 has manual transmission. 1985 Volvo 780 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1991 Buick Roadmaster will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1991 Buick Roadmaster | 1985 Volvo 780 | |
| Make | Buick | Volvo |
| Model | Roadmaster | 780 |
| Year Released | 1991 | 1985 |
| Engine Position | Front | Front |
| Engine Size | 5731 cc | 2383 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Horse Power | 177 HP | 127 HP |
| Engine RPM | 4200 RPM | 4800 RPM |
| Torque | 393 Nm | 250 Nm |
| Torque RPM | 2400 RPM | 2400 RPM |
| Engine Compression Ratio | 8.0:1 | 23.0:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1840 kg | 1470 kg |
| Vehicle Length | 5280 mm | 4800 mm |
| Vehicle Width | 2040 mm | 1760 mm |
| Vehicle Height | 1650 mm | 1410 mm |
| Wheelbase Size | 2950 mm | 2780 mm |
| Fuel Tank Capacity | 75 L | 80 L |
