2003 Alpina B3 vs. 2007 BMW 318
To start off, 2007 BMW 318 is newer by 4 year(s). Which means there will be less support and parts availability for 2003 Alpina B3. In addition, the cost of maintenance, including insurance, on 2003 Alpina B3 would be higher. At 3,344 cc (6 cylinders), 2003 Alpina B3 is equipped with a bigger engine. In terms of performance, 2003 Alpina B3 (301 HP @ 6200 RPM) has 181 more horse power than 2007 BMW 318. (120 HP @ 4000 RPM). In normal driving conditions, 2003 Alpina B3 should accelerate faster than 2007 BMW 318. With that said, vehicle weight also plays an important factor in acceleration. 2003 Alpina B3 weights approximately 65 kg more than 2007 BMW 318. 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 Alpina B3 (362 Nm @ 4800 RPM) has 82 more torque (in Nm) than 2007 BMW 318. (280 Nm @ 1750 RPM). This means 2003 Alpina B3 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW 318.
Compare all specifications:
| 2003 Alpina B3 | 2007 BMW 318 | |
| Make | Alpina | BMW |
| Model | B3 | 318 |
| Year Released | 2003 | 2007 |
| Body Type | Convertible | Station Wagon |
| Engine Position | Front | Front |
| Engine Size | 3344 cc | 1994 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 301 HP | 120 HP |
| Engine RPM | 6200 RPM | 4000 RPM |
| Torque | 362 Nm | 280 Nm |
| Torque RPM | 4800 RPM | 1750 RPM |
| Engine Bore Size | 87 mm | 84 mm |
| Engine Stroke Size | 93.8 mm | 90 mm |
| Engine Compression Ratio | 10.0:1 | 17.0:1 |
| Fuel Type | Gasoline | Diesel |
| Drive Type | Rear | Rear |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1645 kg | 1580 kg |
| Vehicle Length | 4490 mm | 4480 mm |
| Vehicle Width | 1760 mm | 1820 mm |
| Vehicle Height | 1360 mm | 1420 mm |
| Wheelbase Size | 2730 mm | 2770 mm |
| Fuel Tank Capacity | 63 L | 61 L |
