2009 BMW Z4 vs. 2011 BMW 125
To start off, 2011 BMW 125 is newer by 2 year(s). Which means there will be less support and parts availability for 2009 BMW Z4. In addition, the cost of maintenance, including insurance, on 2009 BMW Z4 would be higher. Both 2009 BMW Z4 and 2011 BMW 125 are equipped with a 2,996 cc engine. In terms of performance, 2009 BMW Z4 (335 HP @ 7900 RPM) has 120 more horse power than 2011 BMW 125. (215 HP @ 6700 RPM). In normal driving conditions, 2009 BMW Z4 should accelerate faster than 2011 BMW 125. With that said, vehicle weight also plays an important factor in acceleration. 2011 BMW 125 weights approximately 215 kg more than 2009 BMW Z4.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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, 2009 BMW Z4 (315 Nm @ 2750 RPM) has 44 more torque (in Nm) than 2011 BMW 125. (271 Nm @ 2500 RPM). This means 2009 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 2011 BMW 125. 2009 BMW Z4 has automatic transmission and 2011 BMW 125 has manual transmission. 2011 BMW 125 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2009 BMW Z4 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2009 BMW Z4 | 2011 BMW 125 | |
| Make | BMW | BMW |
| Model | Z4 | 125 |
| Year Released | 2009 | 2011 |
| Body Type | Convertible | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2996 cc | 2996 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 335 HP | 215 HP |
| Engine RPM | 7900 RPM | 6700 RPM |
| Torque | 315 Nm | 271 Nm |
| Torque RPM | 2750 RPM | 2500 RPM |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 244 km/hour | 238 km/hour |
| Acceleration 0-100mph | 6.2 seconds | 6.8 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Manual |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1310 kg | 1525 kg |
| Vehicle Length | 4100 mm | 4370 mm |
| Vehicle Width | 1790 mm | 1420 mm |
| Vehicle Height | 1310 mm | 1760 mm |
| Wheelbase Size | 2500 mm | 2670 mm |
| Fuel Consumption Overall | 9.7 L/100km | 8.1 L/100km |
| Fuel Tank Capacity | 55 L | 53 L |
