2008 BMW 523 vs. 2006 Infiniti Q45
To start off, 2008 BMW 523 is newer by 2 year(s). Which means there will be less support and parts availability for 2006 Infiniti Q45. In addition, the cost of maintenance, including insurance, on 2006 Infiniti Q45 would be higher. At 4,490 cc (8 cylinders), 2006 Infiniti Q45 is equipped with a bigger engine. In terms of performance, 2006 Infiniti Q45 (340 HP @ 6400 RPM) has 165 more horse power than 2008 BMW 523. (175 HP @ 5800 RPM) In normal driving conditions, 2006 Infiniti Q45 should accelerate faster than 2008 BMW 523. With that said, vehicle weight also plays an important factor in acceleration. 2008 BMW 523 weights approximately 170 kg more than 2006 Infiniti Q45.
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, 2006 Infiniti Q45 (452 Nm @ 4000 RPM) has 222 more torque (in Nm) than 2008 BMW 523. (230 Nm @ 3500 RPM). This means 2006 Infiniti Q45 will have an easier job in driving up hills or pulling heavy equipment than 2008 BMW 523. 2006 Infiniti Q45 has automatic transmission and 2008 BMW 523 has manual transmission. 2008 BMW 523 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2006 Infiniti Q45 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2008 BMW 523 | 2006 Infiniti Q45 | |
| Make | BMW | Infiniti |
| Model | 523 | Q45 |
| Year Released | 2008 | 2006 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2497 cc | 4490 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 | 452 Nm |
| Torque RPM | 3500 RPM | 4000 RPM |
| Engine Bore Size | 78.8 mm | 93 mm |
| Engine Stroke Size | 82 mm | 82.7 mm |
| Engine Compression Ratio | 11.0:1 | 9.5:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1490 kg | 1320 kg |
| Vehicle Length | 4850 mm | 5110 mm |
| Vehicle Width | 1850 mm | 1850 mm |
| Vehicle Height | 1470 mm | 1500 mm |
| Wheelbase Size | 2890 mm | 2880 mm |
| Fuel Consumption Overall | 11.1 L/100km | 11.9 L/100km |
| Fuel Tank Capacity | 70 L | 81 L |
