2009 BMW X5 vs. 1991 Mercedes-Benz 400
To start off, 2009 BMW X5 is newer by 18 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 4,799 cc (8 cylinders), 2009 BMW X5 is equipped with a bigger engine. In terms of performance, 2009 BMW X5 (350 HP @ 6300 RPM) has 63 more horse power than 1991 Mercedes-Benz 400. (287 HP @ 5700 RPM). In normal driving conditions, 2009 BMW X5 should accelerate faster than 1991 Mercedes-Benz 400.
Because 2009 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, 2009 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, 2009 BMW X5 (475 Nm @ 3400 RPM) has 65 more torque (in Nm) than 1991 Mercedes-Benz 400. (410 Nm @ 3900 RPM). This means 2009 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 1991 Mercedes-Benz 400.
Compare all specifications:
| 2009 BMW X5 | 1991 Mercedes-Benz 400 | |
| Make | BMW | Mercedes-Benz |
| Model | X5 | 400 |
| Year Released | 2009 | 1991 |
| Engine Position | Front | Front |
| Engine Size | 4799 cc | 4196 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Horse Power | 350 HP | 287 HP |
| Engine RPM | 6300 RPM | 5700 RPM |
| Torque | 475 Nm | 410 Nm |
| Torque RPM | 3400 RPM | 3900 RPM |
| Engine Bore Size | 93 mm | 92 mm |
| Engine Stroke Size | 88.3 mm | 78.9 mm |
| Engine Compression Ratio | 10.5:1 | 10.0:1 |
| Drive Type | 4WD | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Length | 4860 mm | 5110 mm |
| Vehicle Width | 1940 mm | 1890 mm |
| Vehicle Height | 1770 mm | 1500 mm |
| Wheelbase Size | 2940 mm | 3050 mm |
