2006 BMW Z4 vs. 1998 Toyota Sienna
To start off, 2006 BMW Z4 is newer by 8 year(s). Which means there will be less support and parts availability for 1998 Toyota Sienna. In addition, the cost of maintenance, including insurance, on 1998 Toyota Sienna would be higher. At 2,982 cc (6 cylinders), 1998 Toyota Sienna is equipped with a bigger engine. In terms of performance, both vehicles can yield 189 horse power. So under normal driving conditions, the acceleration of both vehicles should be relatively similar. With that said, vehicle weight also plays an important factor in acceleration. 1998 Toyota Sienna weights approximately 370 kg more than 2006 BMW Z4.
Because 2006 BMW Z4 is rear wheel drive (RWD), it offers better handling in dry conditions; in addition, if you are looking to drift, it will be much easier to do with 2006 BMW Z4. However, in wet, icy, snow, or gravel driving conditions, 1998 Toyota Sienna, being front wheel drive (FWD), will offer much better control with better grip. 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, 1998 Toyota Sienna (279 Nm @ 4300 RPM) has 34 more torque (in Nm) than 2006 BMW Z4. (245 Nm @ 3500 RPM). This means 1998 Toyota Sienna will have an easier job in driving up hills or pulling heavy equipment than 2006 BMW Z4. 1998 Toyota Sienna has automatic transmission and 2006 BMW Z4 has manual transmission. 2006 BMW Z4 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 1998 Toyota Sienna will be easier to drive especially in heavy traffic.
Compare all specifications:
| 2006 BMW Z4 | 1998 Toyota Sienna | |
| Make | BMW | Toyota |
| Model | Z4 | Sienna |
| Year Released | 2006 | 1998 |
| Body Type | Convertible | Minivan |
| Engine Position | Front | Front |
| Engine Size | 2492 cc | 2982 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 189 HP | 189 HP |
| Engine RPM | 6000 RPM | 5200 RPM |
| Torque | 245 Nm | 279 Nm |
| Torque RPM | 3500 RPM | 4300 RPM |
| Engine Bore Size | 84 mm | 87.6 mm |
| Engine Stroke Size | 75 mm | 83 mm |
| Engine Compression Ratio | 11.0:1 | 10.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Automatic |
| Vehicle Weight | 1335 kg | 1705 kg |
| Vehicle Length | 4100 mm | 4920 mm |
| Vehicle Width | 1790 mm | 1870 mm |
| Vehicle Height | 1310 mm | 1720 mm |
| Wheelbase Size | 2500 mm | 2910 mm |
