2006 Alfa Romeo 166 vs. 2007 BMW Z4
To start off, 2007 BMW Z4 is newer by 1 year(s). Which means there will be less support and parts availability for 2006 Alfa Romeo 166. In addition, the cost of maintenance, including insurance, on 2006 Alfa Romeo 166 would be higher. At 3,246 cc (6 cylinders), 2007 BMW Z4 is equipped with a bigger engine. In terms of performance, 2007 BMW Z4 (338 HP @ 7900 RPM) has 100 more horse power than 2006 Alfa Romeo 166. (238 HP @ 6200 RPM) In normal driving conditions, 2007 BMW Z4 should accelerate faster than 2006 Alfa Romeo 166. With that said, vehicle weight also plays an important factor in acceleration. 2006 Alfa Romeo 166 weights approximately 130 kg more than 2007 BMW Z4.
Because 2007 BMW Z4 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 2007 BMW Z4. However, in wet, icy, snow, or gravel driving conditions, 2006 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, 2007 BMW Z4 (365 Nm @ 4900 RPM) has 76 more torque (in Nm) than 2006 Alfa Romeo 166. (289 Nm @ 4800 RPM). This means 2007 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2006 Alfa Romeo 166.
Compare all specifications:
| 2006 Alfa Romeo 166 | 2007 BMW Z4 | |
| Make | Alfa Romeo | BMW |
| Model | 166 | Z4 |
| Year Released | 2006 | 2007 |
| Body Type | Sedan | Convertible |
| Engine Position | Front | Front |
| Engine Size | 3179 cc | 3246 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 238 HP | 338 HP |
| Engine RPM | 6200 RPM | 7900 RPM |
| Torque | 289 Nm | 365 Nm |
| Torque RPM | 4800 RPM | 4900 RPM |
| Engine Bore Size | 93 mm | 87 mm |
| Engine Stroke Size | 78 mm | 91 mm |
| Engine Compression Ratio | 10.0:1 | 11.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline - Premium |
| Top Speed | 245 km/hour | 250 km/hour |
| Acceleration 0-100mph | 7.4 seconds | 5 seconds |
| Drive Type | Front | Rear |
| Number of Seats | 5 seats | 2 seats |
| Number of Doors | 4 doors | 2 doors |
| Vehicle Weight | 1615 kg | 1485 kg |
| Vehicle Length | 4730 mm | 4120 mm |
| Vehicle Width | 1810 mm | 1790 mm |
| Vehicle Height | 1420 mm | 1310 mm |
| Wheelbase Size | 2710 mm | 2500 mm |
| Fuel Consumption Overall | 12.5 L/100km | 12.1 L/100km |
| Fuel Tank Capacity | 69 L | 55 L |
