2003 Alfa Romeo 166 vs. 2003 BMW 645
To start off, both 2003 Alfa Romeo 166 and 2003 BMW 645 were released in the same year (2003). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 4,398 cc (8 cylinders), 2003 BMW 645 is equipped with a bigger engine. In terms of performance, 2003 BMW 645 (321 HP @ 6100 RPM) has 173 more horse power than 2003 Alfa Romeo 166. (148 HP @ 4000 RPM) In normal driving conditions, 2003 BMW 645 should accelerate faster than 2003 Alfa Romeo 166. With that said, vehicle weight also plays an important factor in acceleration. 2003 BMW 645 weights approximately 353 kg more than 2003 Alfa Romeo 166. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2003 BMW 645 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2003 BMW 645. However, in wet, icy, snow, or gravel driving conditions, 2003 Alfa Romeo 166, being front wheel drive (FWD), will offer much better control with better grip. 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 BMW 645 (450 Nm @ 3600 RPM) has 150 more torque (in Nm) than 2003 Alfa Romeo 166. (300 Nm @ 1800 RPM). This means 2003 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2003 Alfa Romeo 166. 2003 BMW 645 has automatic transmission and 2003 Alfa Romeo 166 has manual transmission. 2003 Alfa Romeo 166 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2003 BMW 645 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2003 Alfa Romeo 166 | 2003 BMW 645 | |
| Make | Alfa Romeo | BMW |
| Model | 166 | 645 |
| Year Released | 2003 | 2003 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2387 cc | 4398 cc |
| Engine Cylinders | 5 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 148 HP | 321 HP |
| Engine RPM | 4000 RPM | 6100 RPM |
| Torque | 300 Nm | 450 Nm |
| Torque RPM | 1800 RPM | 3600 RPM |
| Engine Bore Size | 82 mm | 92 mm |
| Engine Stroke Size | 90.4 mm | 82.7 mm |
| Engine Compression Ratio | 18.5:1 | 10.5:1 |
| Top Speed | 210 km/hour | 250 km/hour |
| Acceleration 0-100mph | 9.9 seconds | 6.2 seconds |
| Drive Type | Front | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1542 kg | 1895 kg |
| Vehicle Length | 4730 mm | 4830 mm |
| Vehicle Width | 1810 mm | 1860 mm |
| Vehicle Height | 1420 mm | 1380 mm |
| Wheelbase Size | 2600 mm | 2790 mm |
| Fuel Consumption | 6.1 L/100km | 8.5 L/100km |
| Fuel Consumption City | 9.9 L/100km | 16.8 L/100km |
| Fuel Consumption Overall | 7.5 L/100km | 11.5 L/100km |
| Fuel Tank Capacity | 69 L | 70 L |
