2007 BMW Z4 vs. 2005 Mercedes-Benz Bionic Car Concept
To start off, 2007 BMW Z4 is newer by 2 year(s). Which means there will be less support and parts availability for 2005 Mercedes-Benz Bionic Car Concept. In addition, the cost of maintenance, including insurance, on 2005 Mercedes-Benz Bionic Car Concept would be higher. At 2,171 cc (6 cylinders), 2007 BMW Z4 is equipped with a bigger engine. In terms of performance, 2007 BMW Z4 (168 HP @ 6250 RPM) has 30 more horse power than 2005 Mercedes-Benz Bionic Car Concept. (138 HP @ 4200 RPM). In normal driving conditions, 2007 BMW Z4 should accelerate faster than 2005 Mercedes-Benz Bionic Car Concept. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW Z4 weights approximately 60 kg more than 2005 Mercedes-Benz Bionic Car Concept. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Let's talk about torque, 2005 Mercedes-Benz Bionic Car Concept (300 Nm @ 1600 RPM) has 90 more torque (in Nm) than 2007 BMW Z4. (210 Nm @ 3500 RPM). This means 2005 Mercedes-Benz Bionic Car Concept will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW Z4.
Compare all specifications:
| 2007 BMW Z4 | 2005 Mercedes-Benz Bionic Car Concept | |
| Make | BMW | Mercedes-Benz |
| Model | Z4 | Bionic Car Concept |
| Year Released | 2007 | 2005 |
| Engine Size | 2171 cc | 1991 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 168 HP | 138 HP |
| Engine RPM | 6250 RPM | 4200 RPM |
| Torque | 210 Nm | 300 Nm |
| Torque RPM | 3500 RPM | 1600 RPM |
| Engine Compression Ratio | 10.8:1 | 18.0:1 |
| Top Speed | 225 km/hour | 185 km/hour |
| Acceleration 0-100mph | 7.7 seconds | 8.2 seconds |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 3 doors |
| Vehicle Weight | 1325 kg | 1265 kg |
| Vehicle Length | 4100 mm | 4250 mm |
| Vehicle Width | 1790 mm | 1820 mm |
| Vehicle Height | 1310 mm | 1600 mm |
| Wheelbase Size | 2500 mm | 2570 mm |
| Fuel Tank Capacity | 55 L | 62 L |
