2008 Cadillac XLR vs. 1991 Ford Sierra
To start off, 2008 Cadillac XLR is newer by 17 year(s). Which means there will be less support and parts availability for 1991 Ford Sierra. In addition, the cost of maintenance, including insurance, on 1991 Ford Sierra would be higher. At 4,566 cc (8 cylinders), 2008 Cadillac XLR is equipped with a bigger engine. In terms of performance, 2008 Cadillac XLR (320 HP @ 6400 RPM) has 245 more horse power than 1991 Ford Sierra. (75 HP @ 4500 RPM). In normal driving conditions, 2008 Cadillac XLR should accelerate faster than 1991 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 2008 Cadillac XLR weights approximately 493 kg more than 1991 Ford Sierra. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2008 Cadillac XLR (420 Nm @ 4400 RPM) has 268 more torque (in Nm) than 1991 Ford Sierra. (152 Nm @ 2200 RPM). This means 2008 Cadillac XLR will have an easier job in driving up hills or pulling heavy equipment than 1991 Ford Sierra.
Compare all specifications:
| 2008 Cadillac XLR | 1991 Ford Sierra | |
| Make | Cadillac | Ford |
| Model | XLR | Sierra |
| Year Released | 2008 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 4566 cc | 1751 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 320 HP | 75 HP |
| Engine RPM | 6400 RPM | 4500 RPM |
| Torque | 420 Nm | 152 Nm |
| Torque RPM | 4400 RPM | 2200 RPM |
| Engine Compression Ratio | 10.5:1 | 21.5:1 |
| Fuel Type | Gasoline | Diesel |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1638 kg | 1145 kg |
| Vehicle Length | 4520 mm | 4430 mm |
| Vehicle Width | 1840 mm | 1700 mm |
| Vehicle Height | 1290 mm | 1370 mm |
| Wheelbase Size | 2690 mm | 2620 mm |
| Fuel Tank Capacity | 68 L | 60 L |
