1991 Buick Roadmaster vs. 2007 Cadillac STS
To start off, 2007 Cadillac STS is newer by 16 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, 2007 Cadillac STS (255 HP @ 6500 RPM) has 78 more horse power than 1991 Buick Roadmaster. (177 HP @ 4200 RPM) In normal driving conditions, 2007 Cadillac STS should accelerate faster than 1991 Buick Roadmaster.
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 51 more torque (in Nm) than 2007 Cadillac STS. (342 Nm @ 3200 RPM). This means 1991 Buick Roadmaster will have an easier job in driving up hills or pulling heavy equipment than 2007 Cadillac STS.
Compare all specifications:
| 1991 Buick Roadmaster | 2007 Cadillac STS | |
| Make | Buick | Cadillac |
| Model | Roadmaster | STS |
| Year Released | 1991 | 2007 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 5731 cc | 3556 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Horse Power | 177 HP | 255 HP |
| Engine RPM | 4200 RPM | 6500 RPM |
| Torque | 393 Nm | 342 Nm |
| Torque RPM | 2400 RPM | 3200 RPM |
| Engine Compression Ratio | 8.0:1 | 10.2:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Length | 5280 mm | 4990 mm |
| Vehicle Width | 2040 mm | 1850 mm |
| Vehicle Height | 1650 mm | 1470 mm |
| Wheelbase Size | 2950 mm | 2960 mm |
| Fuel Tank Capacity | 75 L | 64 L |
