2005 Alpina B3 vs. 1999 Infiniti Q45
To start off, 2005 Alpina B3 is newer by 6 year(s). Which means there will be less support and parts availability for 1999 Infiniti Q45. In addition, the cost of maintenance, including insurance, on 1999 Infiniti Q45 would be higher. At 4,128 cc (8 cylinders), 1999 Infiniti Q45 is equipped with a bigger engine. In terms of performance, 2005 Alpina B3 (301 HP @ 6300 RPM) has 36 more horse power than 1999 Infiniti Q45. (265 HP @ 5600 RPM). In normal driving conditions, 2005 Alpina B3 should accelerate faster than 1999 Infiniti Q45. With that said, vehicle weight also plays an important factor in acceleration. 2005 Alpina B3 weights approximately 191 kg more than 1999 Infiniti Q45. 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, 1999 Infiniti Q45 (378 Nm @ 4000 RPM) has 15 more torque (in Nm) than 2005 Alpina B3. (363 Nm @ 4800 RPM). This means 1999 Infiniti Q45 will have an easier job in driving up hills or pulling heavy equipment than 2005 Alpina B3.
Compare all specifications:
| 2005 Alpina B3 | 1999 Infiniti Q45 | |
| Make | Alpina | Infiniti |
| Model | B3 | Q45 |
| Year Released | 2005 | 1999 |
| Body Type | Coupe | Sedan |
| Engine Position | Front | Front |
| Engine Size | 3347 cc | 4128 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 301 HP | 265 HP |
| Engine RPM | 6300 RPM | 5600 RPM |
| Torque | 363 Nm | 378 Nm |
| Torque RPM | 4800 RPM | 4000 RPM |
| Engine Bore Size | 87 mm | 93 mm |
| Engine Stroke Size | 93.1 mm | 76 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | Rear |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 1950 kg | 1759 kg |
| Vehicle Length | 4490 mm | 5080 mm |
| Vehicle Width | 1760 mm | 1830 mm |
| Vehicle Height | 1370 mm | 1450 mm |
| Wheelbase Size | 2730 mm | 2840 mm |
| Fuel Tank Capacity | 63 L | 60 L |
