2006 BMW X5 vs. 1991 Mercedes-Benz 400
To start off, 2006 BMW X5 is newer by 15 year(s). Which means there will be less support and parts availability for 1991 Mercedes-Benz 400. In addition, the cost of maintenance, including insurance, on 1991 Mercedes-Benz 400 would be higher. At 4,392 cc, 2006 BMW X5 is equipped with a bigger engine. In terms of performance, 2006 BMW X5 (315 HP @ 5400 RPM) has 29 more horse power than 1991 Mercedes-Benz 400. (286 HP @ 5700 RPM). In normal driving conditions, 2006 BMW X5 should accelerate faster than 1991 Mercedes-Benz 400. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW X5 weights approximately 231 kg more than 1991 Mercedes-Benz 400. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 BMW X5 is four wheel drive (4WD), it will have significant more traction and grip than 1991 Mercedes-Benz 400. In wet, icy, snow, or gravel driving conditions, 2006 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, 2006 BMW X5 (439 Nm @ 3600 RPM) has 29 more torque (in Nm) than 1991 Mercedes-Benz 400. (410 Nm @ 3900 RPM). This means 2006 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 1991 Mercedes-Benz 400.
Compare all specifications:
| 2006 BMW X5 | 1991 Mercedes-Benz 400 | |
| Make | BMW | Mercedes-Benz |
| Model | X5 | 400 |
| Year Released | 2006 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 4392 cc | 4196 cc |
| Horse Power | 315 HP | 286 HP |
| Engine RPM | 5400 RPM | 5700 RPM |
| Torque | 439 Nm | 410 Nm |
| Torque RPM | 3600 RPM | 3900 RPM |
| Drive Type | 4WD | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 2235 kg | 2004 kg |
| Vehicle Length | 4670 mm | 5220 mm |
| Vehicle Width | 1880 mm | 1890 mm |
| Vehicle Height | 1760 mm | 1500 mm |
| Wheelbase Size | 2830 mm | 3150 mm |
