2007 BMW Z4 vs. 2006 Chevrolet Cobalt
To start off, 2007 BMW Z4 is newer by 1 year(s). Which means there will be less support and parts availability for 2006 Chevrolet Cobalt. In addition, the cost of maintenance, including insurance, on 2006 Chevrolet Cobalt would be higher. At 2,996 cc (6 cylinders), 2007 BMW Z4 is equipped with a bigger engine. In terms of performance, 2007 BMW Z4 (255 HP @ 6600 RPM) has 110 more horse power than 2006 Chevrolet Cobalt. (145 HP @ 5600 RPM). In normal driving conditions, 2007 BMW Z4 should accelerate faster than 2006 Chevrolet Cobalt. With that said, vehicle weight also plays an important factor in acceleration. 2006 Chevrolet Cobalt weights approximately 352 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 Chevrolet Cobalt, 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 (298 Nm @ 2750 RPM) has 87 more torque (in Nm) than 2006 Chevrolet Cobalt. (211 Nm @ 4000 RPM). This means 2007 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2006 Chevrolet Cobalt.
Compare all specifications:
| 2007 BMW Z4 | 2006 Chevrolet Cobalt | |
| Make | BMW | Chevrolet |
| Model | Z4 | Cobalt |
| Year Released | 2007 | 2006 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2996 cc | 2196 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 255 HP | 145 HP |
| Engine RPM | 6600 RPM | 5600 RPM |
| Torque | 298 Nm | 211 Nm |
| Torque RPM | 2750 RPM | 4000 RPM |
| Engine Bore Size | 85 mm | 86 mm |
| Engine Stroke Size | 88 mm | 94 mm |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1398 kg | 1750 kg |
| Vehicle Length | 4100 mm | 4590 mm |
| Vehicle Width | 1790 mm | 1730 mm |
| Vehicle Height | 1300 mm | 1420 mm |
| Wheelbase Size | 2500 mm | 2630 mm |
| Fuel Consumption Highway | 7.8 L/100km | 6.9 L/100km |
| Fuel Consumption City | 11.8 L/100km | 9.4 L/100km |
| Fuel Consumption Overall | 9.8 L/100km | 8.1 L/100km |
| Fuel Tank Capacity | 55 L | 49 L |
