2006 BMW Z4 vs. 2007 Chevrolet HHR
To start off, 2007 Chevrolet HHR is newer by 1 year(s). Which means there will be less support and parts availability for 2006 BMW Z4. In addition, the cost of maintenance, including insurance, on 2006 BMW Z4 would be higher. At 3,246 cc (6 cylinders), 2006 BMW Z4 is equipped with a bigger engine. In terms of performance, 2006 BMW Z4 (338 HP @ 7900 RPM) has 189 more horse power than 2007 Chevrolet HHR. (149 HP @ 5600 RPM). In normal driving conditions, 2006 BMW Z4 should accelerate faster than 2007 Chevrolet HHR.
Because 2006 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 2006 BMW Z4. However, in wet, icy, snow, or gravel driving conditions, 2007 Chevrolet HHR, 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 Z4 (365 Nm @ 4900 RPM) has 159 more torque (in Nm) than 2007 Chevrolet HHR. (206 Nm @ 4200 RPM). This means 2006 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2007 Chevrolet HHR.
Compare all specifications:
| 2006 BMW Z4 | 2007 Chevrolet HHR | |
| Make | BMW | Chevrolet |
| Model | Z4 | HHR |
| Year Released | 2006 | 2007 |
| Body Type | Convertible | Hatchback |
| Engine Position | Front | Front |
| Engine Size | 3246 cc | 2201 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 338 HP | 149 HP |
| Engine RPM | 7900 RPM | 5600 RPM |
| Torque | 365 Nm | 206 Nm |
| Torque RPM | 4900 RPM | 4200 RPM |
| Engine Compression Ratio | 11.5:1 | 10.0:1 |
| Fuel Type | Gasoline - Premium | Diesel |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Length | 4120 mm | 4480 mm |
| Vehicle Width | 1790 mm | 1760 mm |
| Vehicle Height | 1310 mm | 1610 mm |
| Wheelbase Size | 2500 mm | 2640 mm |
| Fuel Consumption Overall | 12.1 L/100km | 9.4 L/100km |
| Fuel Tank Capacity | 55 L | 61 L |
