2006 BMW Z4 vs. 2007 Subaru B9 Tribeca
To start off, 2007 Subaru B9 Tribeca 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 2,997 cc, 2007 Subaru B9 Tribeca is equipped with a bigger engine. In terms of performance, 2007 Subaru B9 Tribeca (245 HP @ 6600 RPM) has 17 more horse power than 2006 BMW Z4. (228 HP @ 5900 RPM) In normal driving conditions, 2007 Subaru B9 Tribeca should accelerate faster than 2006 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2007 Subaru B9 Tribeca weights approximately 268 kg more than 2006 BMW Z4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2007 Subaru B9 Tribeca is four wheel drive (4WD), it will have significant more traction and grip than 2006 BMW Z4. In wet, icy, snow, or gravel driving conditions, 2007 Subaru B9 Tribeca will offer significantly more control. 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 (301 Nm @ 3500 RPM) has 9 more torque (in Nm) than 2007 Subaru B9 Tribeca. (292 Nm @ 4200 RPM). This means 2006 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2007 Subaru B9 Tribeca.
Compare all specifications:
| 2006 BMW Z4 | 2007 Subaru B9 Tribeca | |
| Make | BMW | Subaru |
| Model | Z4 | B9 Tribeca |
| Year Released | 2006 | 2007 |
| Body Type | Convertible | SUV |
| Engine Position | Front | Front |
| Engine Size | 2979 cc | 2997 cc |
| Engine Type | in-line | boxer |
| Horse Power | 228 HP | 245 HP |
| Engine RPM | 5900 RPM | 6600 RPM |
| Torque | 301 Nm | 292 Nm |
| Torque RPM | 3500 RPM | 4200 RPM |
| Engine Bore Size | 84 mm | 89 mm |
| Engine Stroke Size | 89.6 mm | 80 mm |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | 4WD |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1365 kg | 1633 kg |
| Vehicle Length | 4100 mm | 4830 mm |
| Vehicle Width | 1790 mm | 1880 mm |
| Vehicle Height | 1310 mm | 1690 mm |
| Wheelbase Size | 2500 mm | 2750 mm |
| Fuel Consumption | 7.8 L/100km | 10.2 L/100km |
| Fuel Consumption City | 11.8 L/100km | 13.1 L/100km |
| Fuel Consumption Overall | 9.1 L/100km | 11.8 L/100km |
| Fuel Tank Capacity | 55 L | 64 L |
