2005 BMW X5 vs. 2006 BMW 523
To start off, 2006 BMW 523 is newer by 1 year(s). Which means there will be less support and parts availability for 2005 BMW X5. In addition, the cost of maintenance, including insurance, on 2005 BMW X5 would be higher. At 4,799 cc (8 cylinders), 2005 BMW X5 is equipped with a bigger engine. In terms of performance, 2005 BMW X5 (355 HP @ 6200 RPM) has 180 more horse power than 2006 BMW 523. (175 HP @ 5800 RPM). In normal driving conditions, 2005 BMW X5 should accelerate faster than 2006 BMW 523. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW X5 weights approximately 568 kg more than 2006 BMW 523. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 BMW X5 is four wheel drive (4WD), it will have significant more traction and grip than 2006 BMW 523. 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 (490 Nm @ 3600 RPM) has 260 more torque (in Nm) than 2006 BMW 523. (230 Nm @ 3500 RPM). This means 2005 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW 523. 2005 BMW X5 has automatic transmission and 2006 BMW 523 has manual transmission. 2006 BMW 523 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 BMW X5 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2005 BMW X5 | 2006 BMW 523 | |
| Make | BMW | BMW |
| Model | X5 | 523 |
| Year Released | 2005 | 2006 |
| Body Type | SUV | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4799 cc | 2497 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 355 HP | 175 HP |
| Engine RPM | 6200 RPM | 5800 RPM |
| Torque | 490 Nm | 230 Nm |
| Torque RPM | 3600 RPM | 3500 RPM |
| Engine Bore Size | 93 mm | 78.8 mm |
| Engine Stroke Size | 88.3 mm | 82 mm |
| Engine Compression Ratio | 11.0:1 | 11.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Top Speed | 246 km/hour | 230 km/hour |
| Acceleration 0-100mph | 6.1 seconds | 9 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 2200 kg | 1632 kg |
| Vehicle Length | 4670 mm | 4850 mm |
| Vehicle Width | 1880 mm | 1850 mm |
| Vehicle Height | 1760 mm | 1470 mm |
| Wheelbase Size | 2940 mm | 2890 mm |
| Fuel Consumption Overall | 13.1 L/100km | 10.9 L/100km |
| Fuel Tank Capacity | 93 L | 70 L |
