2008 BMW 523 vs. 2003 Infiniti M
To start off, 2008 BMW 523 is newer by 5 year(s). Which means there will be less support and parts availability for 2003 Infiniti M. In addition, the cost of maintenance, including insurance, on 2003 Infiniti M would be higher. At 4,494 cc (8 cylinders), 2003 Infiniti M is equipped with a bigger engine. In terms of performance, 2003 Infiniti M (340 HP @ 6400 RPM) has 165 more horse power than 2008 BMW 523. (175 HP @ 5800 RPM) In normal driving conditions, 2003 Infiniti M should accelerate faster than 2008 BMW 523. With that said, vehicle weight also plays an important factor in acceleration. 2003 Infiniti M weights approximately 247 kg more than 2008 BMW 523. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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, 2003 Infiniti M (451 Nm @ 4000 RPM) has 221 more torque (in Nm) than 2008 BMW 523. (230 Nm @ 3500 RPM). This means 2003 Infiniti M will have an easier job in driving up hills or pulling heavy equipment than 2008 BMW 523.
Compare all specifications:
| 2008 BMW 523 | 2003 Infiniti M | |
| Make | BMW | Infiniti |
| Model | 523 | M |
| Year Released | 2008 | 2003 |
| Engine Position | Front | Front |
| Engine Size | 2496 cc | 4494 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 175 HP | 340 HP |
| Engine RPM | 5800 RPM | 6400 RPM |
| Torque | 230 Nm | 451 Nm |
| Torque RPM | 3500 RPM | 4000 RPM |
| Engine Bore Size | 82 mm | 93 mm |
| Engine Stroke Size | 78.8 mm | 82.7 mm |
| Engine Compression Ratio | 11.0:1 | 10.5:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 5 doors | 4 doors |
| Vehicle Weight | 1500 kg | 1747 kg |
| Vehicle Length | 4850 mm | 5020 mm |
| Vehicle Width | 1470 mm | 1780 mm |
| Vehicle Height | 1850 mm | 1470 mm |
| Wheelbase Size | 2890 mm | 2810 mm |
| Fuel Tank Capacity | 70 L | 79 L |
