1989 Citroen XM vs. 1987 Ford Sierra
To start off, 1989 Citroen XM is newer by 2 year(s). Which means there will be less support and parts availability for 1987 Ford Sierra. In addition, the cost of maintenance, including insurance, on 1987 Ford Sierra would be higher. At 2,975 cc (6 cylinders), 1989 Citroen XM is equipped with a bigger engine. In terms of performance, 1989 Citroen XM (168 HP @ 5600 RPM) has 56 more horse power than 1987 Ford Sierra. (112 HP @ 5300 RPM). In normal driving conditions, 1989 Citroen XM should accelerate faster than 1987 Ford Sierra. With that said, vehicle weight also plays an important factor in acceleration. 1989 Citroen XM weights approximately 285 kg more than 1987 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, 1989 Citroen XM (235 Nm @ 4800 RPM) has 55 more torque (in Nm) than 1987 Ford Sierra. (180 Nm @ 3000 RPM). This means 1989 Citroen XM will have an easier job in driving up hills or pulling heavy equipment than 1987 Ford Sierra.
Compare all specifications:
| 1989 Citroen XM | 1987 Ford Sierra | |
| Make | Citroen | Ford |
| Model | XM | Sierra |
| Year Released | 1989 | 1987 |
| Engine Position | Front | Front |
| Engine Size | 2975 cc | 2292 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Horse Power | 168 HP | 112 HP |
| Engine RPM | 5600 RPM | 5300 RPM |
| Torque | 235 Nm | 180 Nm |
| Torque RPM | 4800 RPM | 3000 RPM |
| Engine Bore Size | 93 mm | 96 mm |
| Engine Stroke Size | 73 mm | 79.5 mm |
| Number of Seats | 5 seats | 5 seats |
| Vehicle Weight | 1420 kg | 1135 kg |
| Vehicle Length | 4720 mm | 4500 mm |
| Vehicle Width | 1800 mm | 1680 mm |
| Vehicle Height | 1400 mm | 1400 mm |
| Wheelbase Size | 2860 mm | 2620 mm |
