2007 BMW Z4 2.5Si Roadster E85 vs. 2007 BMW Z4 3.0si Coupe Automatic
To start off, both 2007 BMW Z4 2.5Si Roadster E85 and 2007 BMW Z4 3.0si Coupe Automatic were released in the same year (2007). Therefore the support and the availability on parts for both vehicles should be relatively similar. At 2,996 cc (6 cylinders), 2007 BMW Z4 3.0si Coupe Automatic is equipped with a bigger engine. In terms of performance, 2007 BMW Z4 3.0si Coupe Automatic (261 HP @ 6600 RPM) has 46 more horse power than 2007 BMW Z4 2.5Si Roadster E85. (215 HP @ 6500 RPM) In normal driving conditions, 2007 BMW Z4 3.0si Coupe Automatic should accelerate faster than 2007 BMW Z4 2.5Si Roadster E85. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW Z4 3.0si Coupe Automatic weights approximately 36 kg more than 2007 BMW Z4 2.5Si Roadster E85. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
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, 2007 BMW Z4 3.0si Coupe Automatic (315 Nm @ 2750 RPM) has 65 more torque (in Nm) than 2007 BMW Z4 2.5Si Roadster E85. (250 Nm @ 2750 RPM). This means 2007 BMW Z4 3.0si Coupe Automatic will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW Z4 2.5Si Roadster E85. 2007 BMW Z4 3.0si Coupe Automatic has automatic transmission and 2007 BMW Z4 2.5Si Roadster E85 has manual transmission. 2007 BMW Z4 2.5Si Roadster E85 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2007 BMW Z4 3.0si Coupe Automatic will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2007 BMW Z4 2.5Si Roadster E85 | 2007 BMW Z4 3.0si Coupe Automatic | |
| Make | BMW | BMW |
| Model | Z4 | Z4 |
| Year Released | 2007 | 2007 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2497 cc | 2996 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 215 HP | 261 HP |
| Engine RPM | 6500 RPM | 6600 RPM |
| Torque | 250 Nm | 315 Nm |
| Torque RPM | 2750 RPM | 2750 RPM |
| Engine Bore Size | 82 mm | 85 mm |
| Engine Stroke Size | 78.8 mm | 88 mm |
| Engine Compression Ratio | 11.0:1 | 10.7:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Top Speed | 240 km/hour | 250 km/hour |
| Acceleration 0-100mph | 6.5 seconds | 5.7 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1362 kg | 1398 kg |
| Vehicle Length | 4100 mm | 4230 mm |
| Vehicle Width | 1310 mm | 1790 mm |
| Vehicle Height | 1790 mm | 1270 mm |
| Wheelbase Size | 2500 mm | 2500 mm |
| Fuel Consumption Overall | 8.4 L/100km | 8.9 L/100km |
| Fuel Tank Capacity | 55 L | 55 L |
