2006 Infiniti Q45 vs. 2007 Alpina D3
To start off, 2007 Alpina D3 is newer by 1 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 39 more horse power than 2007 Alpina D3. (301 HP @ 6300 RPM). In normal driving conditions, 2006 Infiniti Q45 should accelerate faster than 2007 Alpina D3. With that said, vehicle weight also plays an important factor in acceleration. 2007 Alpina D3 weights approximately 130 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 90 more torque (in Nm) than 2007 Alpina D3. (362 Nm @ 4800 RPM). This means 2006 Infiniti Q45 will have an easier job in driving up hills or pulling heavy equipment than 2007 Alpina D3.
Compare all specifications:
| 2006 Infiniti Q45 | 2007 Alpina D3 | |
| Make | Infiniti | Alpina |
| Model | Q45 | D3 |
| Year Released | 2006 | 2007 |
| Body Type | Sedan | Coupe |
| Engine Position | Front | Front |
| Engine Size | 4490 cc | 3346 cc |
| Engine Cylinders | 8 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 340 HP | 301 HP |
| Engine RPM | 6400 RPM | 6300 RPM |
| Torque | 452 Nm | 362 Nm |
| Torque RPM | 4000 RPM | 4800 RPM |
| Engine Bore Size | 93 mm | 87 mm |
| Engine Stroke Size | 82.7 mm | 93.8 mm |
| Engine Compression Ratio | 9.5:1 | 10.2:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1320 kg | 1450 kg |
| Vehicle Length | 5110 mm | 4490 mm |
| Vehicle Width | 1850 mm | 1760 mm |
| Vehicle Height | 1500 mm | 1370 mm |
| Wheelbase Size | 2880 mm | 2730 mm |
| Fuel Consumption Overall | 11.9 L/100km | 11 L/100km |
| Fuel Tank Capacity | 81 L | 63 L |
