2006 BMW Z4 vs. 2005 Mercedes-Benz R
To start off, 2006 BMW Z4 is newer by 1 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 3,498 cc (6 cylinders), 2005 Mercedes-Benz R is equipped with a bigger engine. In terms of performance, 2005 Mercedes-Benz R (268 HP) has 79 more horse power than 2006 BMW Z4. (189 HP) In normal driving conditions, 2005 Mercedes-Benz R should accelerate faster than 2006 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Mercedes-Benz R weights approximately 900 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 2005 Mercedes-Benz R 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, 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 (350 Nm @ 2400 RPM) has 105 more torque (in Nm) than 2006 BMW Z4. (245 Nm @ 3500 RPM). This means 2005 Mercedes-Benz R will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW Z4.
Compare all specifications:
| 2006 BMW Z4 | 2005 Mercedes-Benz R | |
| Make | BMW | Mercedes-Benz |
| Model | Z4 | R |
| Year Released | 2006 | 2005 |
| Body Type | Convertible | Minivan |
| Engine Position | Front | Front |
| Engine Size | 2492 cc | 3498 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 189 HP | 268 HP |
| Torque | 245 Nm | 350 Nm |
| Torque RPM | 3500 RPM | 2400 RPM |
| Engine Bore Size | 84 mm | 92.9 mm |
| Engine Stroke Size | 75 mm | 86 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 | 1335 kg | 2235 kg |
| Vehicle Length | 4100 mm | 5160 mm |
| Vehicle Width | 1790 mm | 1930 mm |
| Vehicle Height | 1310 mm | 1660 mm |
| Wheelbase Size | 2500 mm | 3220 mm |
| Fuel Tank Capacity | 55 L | 62 L |
