1991 Buick Roadmaster vs. 2004 Jaguar XJ
To start off, 2004 Jaguar XJ 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 5,731 cc (8 cylinders), 1991 Buick Roadmaster is equipped with a bigger engine. In terms of performance, 2004 Jaguar XJ (400 HP @ 6100 RPM) has 223 more horse power than 1991 Buick Roadmaster. (177 HP @ 4200 RPM) In normal driving conditions, 2004 Jaguar XJ should accelerate faster than 1991 Buick Roadmaster. With that said, vehicle weight also plays an important factor in acceleration. 1991 Buick Roadmaster weights approximately 151 kg more than 2004 Jaguar XJ.
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, 2004 Jaguar XJ (553 Nm @ 3500 RPM) has 160 more torque (in Nm) than 1991 Buick Roadmaster. (393 Nm @ 2400 RPM). This means 2004 Jaguar XJ will have an easier job in driving up hills or pulling heavy equipment than 1991 Buick Roadmaster.
Compare all specifications:
| 1991 Buick Roadmaster | 2004 Jaguar XJ | |
| Make | Buick | Jaguar |
| Model | Roadmaster | XJ |
| Year Released | 1991 | 2004 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 5731 cc | 4193 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 177 HP | 400 HP |
| Engine RPM | 4200 RPM | 6100 RPM |
| Torque | 393 Nm | 553 Nm |
| Torque RPM | 2400 RPM | 3500 RPM |
| Engine Compression Ratio | 8.0:1 | 9.1:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1840 kg | 1689 kg |
| Vehicle Length | 5280 mm | 5220 mm |
| Vehicle Width | 2040 mm | 1870 mm |
| Vehicle Height | 1650 mm | 1450 mm |
| Wheelbase Size | 2950 mm | 3170 mm |
| Fuel Tank Capacity | 75 L | 85 L |
