1991 Buick Roadmaster vs. 2007 Lexus IS
To start off, 2007 Lexus IS 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 5,002 cc (8 cylinders), 1991 Buick Roadmaster is equipped with a bigger engine. In terms of performance, 2007 Lexus IS (205 HP @ 6400 RPM) has 37 more horse power than 1991 Buick Roadmaster. (168 HP @ 4200 RPM) In normal driving conditions, 2007 Lexus IS should accelerate faster than 1991 Buick Roadmaster. With that said, vehicle weight also plays an important factor in acceleration. 1991 Buick Roadmaster weights approximately 235 kg more than 2007 Lexus IS.
Because 2007 Lexus IS 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, 2007 Lexus IS 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 (346 Nm @ 2400 RPM) has 95 more torque (in Nm) than 2007 Lexus IS. (251 Nm @ 4800 RPM). This means 1991 Buick Roadmaster will have an easier job in driving up hills or pulling heavy equipment than 2007 Lexus IS.
Compare all specifications:
| 1991 Buick Roadmaster | 2007 Lexus IS | |
| Make | Buick | Lexus |
| Model | Roadmaster | IS |
| Year Released | 1991 | 2007 |
| Body Type | Station Wagon | Sedan |
| Engine Position | Front | Front |
| Engine Size | 5002 cc | 2499 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | V |
| Horse Power | 168 HP | 205 HP |
| Engine RPM | 4200 RPM | 6400 RPM |
| Torque | 346 Nm | 251 Nm |
| Torque RPM | 2400 RPM | 4800 RPM |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Rear | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 2000 kg | 1765 kg |
| Vehicle Length | 5540 mm | 4580 mm |
| Vehicle Width | 2040 mm | 1810 mm |
| Vehicle Height | 1540 mm | 1430 mm |
| Wheelbase Size | 2950 mm | 2740 mm |
