2005 BMW X5 vs. 1987 BMW M6
To start off, 2005 BMW X5 is newer by 18 year(s). Which means there will be less support and parts availability for 1987 BMW M6. In addition, the cost of maintenance, including insurance, on 1987 BMW M6 would be higher. At 3,453 cc (6 cylinders), 1987 BMW M6 is equipped with a bigger engine. In terms of performance, 1987 BMW M6 (282 HP @ 6500 RPM) has 67 more horse power than 2005 BMW X5. (215 HP @ 4000 RPM) In normal driving conditions, 1987 BMW M6 should accelerate faster than 2005 BMW X5. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW X5 weights approximately 665 kg more than 1987 BMW M6.
Because 2005 BMW X5 is four wheel drive (4WD), it will have significant more traction and grip than 1987 BMW M6. In wet, icy, snow, or gravel driving conditions, 2005 BMW X5 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, 2005 BMW X5 (520 Nm @ 2000 RPM) has 186 more torque (in Nm) than 1987 BMW M6. (334 Nm @ 4500 RPM). This means 2005 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 1987 BMW M6.
Compare all specifications:
| 2005 BMW X5 | 1987 BMW M6 | |
| Make | BMW | BMW |
| Model | X5 | M6 |
| Year Released | 2005 | 1987 |
| Body Type | SUV | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2926 cc | 3453 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 215 HP | 282 HP |
| Engine RPM | 4000 RPM | 6500 RPM |
| Torque | 520 Nm | 334 Nm |
| Torque RPM | 2000 RPM | 4500 RPM |
| Engine Bore Size | 84 mm | 93.4 mm |
| Engine Stroke Size | 90 mm | 84 mm |
| Engine Compression Ratio | 18.0:1 | 10.5:1 |
| Fuel Type | Diesel | Gasoline |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 5 doors | 2 doors |
| Vehicle Weight | 2170 kg | 1505 kg |
| Vehicle Length | 4670 mm | 4760 mm |
| Vehicle Width | 1880 mm | 1730 mm |
| Vehicle Height | 1720 mm | 1360 mm |
| Wheelbase Size | 2830 mm | 2630 mm |
| Fuel Tank Capacity | 93 L | 70 L |
