2006 BMW X5 vs. 2007 BMW 523
To start off, 2007 BMW 523 is newer by 1 year(s). Which means there will be less support and parts availability for 2006 BMW X5. In addition, the cost of maintenance, including insurance, on 2006 BMW X5 would be higher. At 4,398 cc (8 cylinders), 2006 BMW X5 is equipped with a bigger engine. In terms of performance, 2006 BMW X5 (282 HP @ 3600 RPM) has 107 more horse power than 2007 BMW 523. (175 HP @ 5800 RPM). In normal driving conditions, 2006 BMW X5 should accelerate faster than 2007 BMW 523. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW X5 weights approximately 705 kg more than 2007 BMW 523. 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 2007 BMW 523. 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 (441 Nm @ 3600 RPM) has 211 more torque (in Nm) than 2007 BMW 523. (230 Nm @ 3500 RPM). This means 2006 BMW X5 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW 523. 2006 BMW X5 has automatic transmission and 2007 BMW 523 has manual transmission. 2007 BMW 523 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2006 BMW X5 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2006 BMW X5 | 2007 BMW 523 | |
| Make | BMW | BMW |
| Model | X5 | 523 |
| Year Released | 2006 | 2007 |
| Engine Position | Front | Front |
| Engine Size | 4398 cc | 2496 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 282 HP | 175 HP |
| Engine RPM | 3600 RPM | 5800 RPM |
| Torque | 441 Nm | 230 Nm |
| Torque RPM | 3600 RPM | 3500 RPM |
| Engine Bore Size | 92 mm | 82 mm |
| Engine Stroke Size | 82.7 mm | 78.8 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Acceleration 0-100mph | 7.5 seconds | 8.5 seconds |
| Drive Type | 4WD | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 5 doors |
| Vehicle Weight | 2195 kg | 1490 kg |
| Vehicle Length | 4670 mm | 4850 mm |
| Vehicle Width | 1880 mm | 1470 mm |
| Vehicle Height | 1710 mm | 1850 mm |
| Wheelbase Size | 2830 mm | 2890 mm |
| Fuel Consumption Overall | 13.9 L/100km | 8.5 L/100km |
| Fuel Tank Capacity | 93 L | 70 L |
