1989 Citroen XM vs. 2007 Porsche 911
To start off, 2007 Porsche 911 is newer by 18 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 3,824 cc (6 cylinders), 2007 Porsche 911 is equipped with a bigger engine. In terms of performance, 2007 Porsche 911 (351 HP @ 6600 RPM) has 243 more horse power than 1989 Citroen XM. (108 HP @ 4300 RPM) In normal driving conditions, 2007 Porsche 911 should accelerate faster than 1989 Citroen XM. With that said, vehicle weight also plays an important factor in acceleration. 2007 Porsche 911 weights approximately 138 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 2007 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, 2007 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, 2007 Porsche 911 (400 Nm @ 4600 RPM) has 165 more torque (in Nm) than 1989 Citroen XM. (235 Nm @ 2000 RPM). This means 2007 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 | 2007 Porsche 911 | |
| Make | Citroen | Porsche |
| Model | XM | 911 |
| Year Released | 1989 | 2007 |
| Engine Position | Front | Rear |
| Engine Size | 2088 cc | 3824 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Horse Power | 108 HP | 351 HP |
| Engine RPM | 4300 RPM | 6600 RPM |
| Torque | 235 Nm | 400 Nm |
| Torque RPM | 2000 RPM | 4600 RPM |
| Engine Bore Size | 85.1 mm | 99 mm |
| Engine Stroke Size | 92 mm | 82.8 mm |
| Engine Compression Ratio | 21.5:1 | 11.8:1 |
| Fuel Type | Diesel | Gasoline - Premium |
| Drive Type | Front | 4WD |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 1337 kg | 1475 kg |
| Vehicle Length | 4720 mm | 4430 mm |
| Vehicle Width | 1800 mm | 1860 mm |
| Vehicle Height | 1400 mm | 1310 mm |
| Wheelbase Size | 2750 mm | 2360 mm |
| Fuel Consumption Overall | 11.9 L/100km | 11.8 L/100km |
| Fuel Tank Capacity | 80 L | 67 L |
