1998 Alfa Romeo 166 vs. 2006 BMW 645
To start off, 2006 BMW 645 is newer by 8 year(s). Which means there will be less support and parts availability for 1998 Alfa Romeo 166. In addition, the cost of maintenance, including insurance, on 1998 Alfa Romeo 166 would be higher. At 4,398 cc (8 cylinders), 2006 BMW 645 is equipped with a bigger engine. In terms of performance, 2006 BMW 645 (328 HP @ 6100 RPM) has 102 more horse power than 1998 Alfa Romeo 166. (226 HP @ 6200 RPM) In normal driving conditions, 2006 BMW 645 should accelerate faster than 1998 Alfa Romeo 166. With that said, vehicle weight also plays an important factor in acceleration. 2006 BMW 645 weights approximately 265 kg more than 1998 Alfa Romeo 166. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2006 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 2006 BMW 645. However, in wet, icy, snow, or gravel driving conditions, 1998 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, 2006 BMW 645 (450 Nm @ 3600 RPM) has 174 more torque (in Nm) than 1998 Alfa Romeo 166. (276 Nm @ 5000 RPM). This means 2006 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 1998 Alfa Romeo 166. 1998 Alfa Romeo 166 has automatic transmission and 2006 BMW 645 has manual transmission. 2006 BMW 645 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1998 Alfa Romeo 166 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1998 Alfa Romeo 166 | 2006 BMW 645 | |
| Make | Alfa Romeo | BMW |
| Model | 166 | 645 |
| Year Released | 1998 | 2006 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2959 cc | 4398 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 226 HP | 328 HP |
| Engine RPM | 6200 RPM | 6100 RPM |
| Torque | 276 Nm | 450 Nm |
| Torque RPM | 5000 RPM | 3600 RPM |
| Engine Bore Size | 93 mm | 92 mm |
| Engine Stroke Size | 72.6 mm | 82.7 mm |
| Top Speed | 237 km/hour | 250 km/hour |
| Acceleration 0-100mph | 8.5 seconds | 6.4 seconds |
| Drive Type | Front | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 5 seats | 4 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1550 kg | 1815 kg |
| Vehicle Length | 4730 mm | 4830 mm |
| Vehicle Width | 1820 mm | 1860 mm |
| Vehicle Height | 1420 mm | 1380 mm |
| Wheelbase Size | 2600 mm | 2790 mm |
| Fuel Tank Capacity | 72 L | 70 L |
