2008 BMW Z4 vs. 2005 Mercedes-Benz R
To start off, 2008 BMW Z4 is newer by 3 year(s). Which means there will be less support and parts availability for 2005 Mercedes-Benz R. In addition, the cost of maintenance, including insurance, on 2005 Mercedes-Benz R would be higher. At 4,966 cc (8 cylinders), 2005 Mercedes-Benz R is equipped with a bigger engine. In terms of performance, 2005 Mercedes-Benz R (302 HP @ 4200 RPM) has 87 more horse power than 2008 BMW Z4. (215 HP @ 6250 RPM) In normal driving conditions, 2005 Mercedes-Benz R should accelerate faster than 2008 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Mercedes-Benz R weights approximately 845 kg more than 2008 BMW Z4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2005 Mercedes-Benz R is four wheel drive (4WD), it will have significant more traction and grip than 2008 BMW Z4. In wet, icy, snow, or gravel driving conditions, 2005 Mercedes-Benz R 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, 2005 Mercedes-Benz R (461 Nm @ 2700 RPM) has 210 more torque (in Nm) than 2008 BMW Z4. (251 Nm @ 2750 RPM). This means 2005 Mercedes-Benz R will have an easier job in driving up hills or pulling heavy equipment than 2008 BMW Z4. 2005 Mercedes-Benz R has automatic transmission and 2008 BMW Z4 has manual transmission. 2008 BMW Z4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2005 Mercedes-Benz R will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2008 BMW Z4 | 2005 Mercedes-Benz R | |
| Make | BMW | Mercedes-Benz |
| Model | Z4 | R |
| Year Released | 2008 | 2005 |
| Body Type | Convertible | Minivan |
| Engine Position | Front | Front |
| Engine Size | 2994 cc | 4966 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 215 HP | 302 HP |
| Engine RPM | 6250 RPM | 4200 RPM |
| Torque | 251 Nm | 461 Nm |
| Torque RPM | 2750 RPM | 2700 RPM |
| Engine Bore Size | 85.1 mm | 97 mm |
| Engine Stroke Size | 88.1 mm | 84 mm |
| Top Speed | 250 km/hour | 240 km/hour |
| Acceleration 0-100mph | 5.9 seconds | 6.9 seconds |
| Drive Type | Rear | 4WD |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1395 kg | 2240 kg |
| Vehicle Length | 4100 mm | 5160 mm |
| Vehicle Width | 1790 mm | 1930 mm |
| Vehicle Height | 1300 mm | 1660 mm |
| Wheelbase Size | 2500 mm | 2860 mm |
| Fuel Tank Capacity | 55 L | 80 L |
