1989 Citroen XM vs. 2008 Porsche 911
To start off, 2008 Porsche 911 is newer by 19 year(s). Which means there will be less support and parts availability for 1989 Citroen XM. In addition, the cost of maintenance, including insurance, on 1989 Citroen XM would be higher. At 3,600 cc (6 cylinders), 2008 Porsche 911 is equipped with a bigger engine. In terms of performance, 2008 Porsche 911 (473 HP @ 6000 RPM) has 305 more horse power than 1989 Citroen XM. (168 HP @ 5600 RPM) In normal driving conditions, 2008 Porsche 911 should accelerate faster than 1989 Citroen XM. With that said, vehicle weight also plays an important factor in acceleration. 2008 Porsche 911 weights approximately 235 kg more than 1989 Citroen XM. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2008 Porsche 911 is four wheel drive (4WD), it will have significant more traction and grip than 1989 Citroen XM. In wet, icy, snow, or gravel driving conditions, 2008 Porsche 911 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, 2008 Porsche 911 (620 Nm @ 1950 RPM) has 385 more torque (in Nm) than 1989 Citroen XM. (235 Nm @ 4800 RPM). This means 2008 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 1989 Citroen XM.
Compare all specifications:
| 1989 Citroen XM | 2008 Porsche 911 | |
| Make | Citroen | Porsche |
| Model | XM | 911 |
| Year Released | 1989 | 2008 |
| Engine Position | Front | Rear |
| Engine Size | 2975 cc | 3600 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | boxer |
| Horse Power | 168 HP | 473 HP |
| Engine RPM | 5600 RPM | 6000 RPM |
| Torque | 235 Nm | 620 Nm |
| Torque RPM | 4800 RPM | 1950 RPM |
| Engine Bore Size | 93 mm | 100 mm |
| Engine Stroke Size | 73 mm | 76.4 mm |
| Engine Compression Ratio | 9.5:1 | 9.0:1 |
| Top Speed | 220 km/hour | 310 km/hour |
| Acceleration 0-100mph | 10.9 seconds | 4 seconds |
| Drive Type | Front | 4WD |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1420 kg | 1655 kg |
| Vehicle Length | 4720 mm | 4440 mm |
| Vehicle Width | 1800 mm | 1840 mm |
| Vehicle Height | 1400 mm | 1300 mm |
| Wheelbase Size | 2860 mm | 2360 mm |
| Fuel Tank Capacity | 80 L | 67 L |
