1990 BMW Z1 vs. 2011 Fiat Siena
To start off, 2011 Fiat Siena is newer by 21 year(s). Which means there will be less support and parts availability for 1990 BMW Z1. In addition, the cost of maintenance, including insurance, on 1990 BMW Z1 would be higher. At 2,494 cc (6 cylinders), 1990 BMW Z1 is equipped with a bigger engine. In terms of performance, 1990 BMW Z1 (175 HP @ 5800 RPM) has 75 more horse power than 2011 Fiat Siena. (100 HP @ 5500 RPM). In normal driving conditions, 1990 BMW Z1 should accelerate faster than 2011 Fiat Siena. With that said, vehicle weight also plays an important factor in acceleration. 1990 BMW Z1 weights approximately 176 kg more than 2011 Fiat Siena. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 1990 BMW Z1 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 1990 BMW Z1. However, in wet, icy, snow, or gravel driving conditions, 2011 Fiat Siena, 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, 1990 BMW Z1 (230 Nm @ 4000 RPM) has 156 more torque (in Nm) than 2011 Fiat Siena. (74 Nm @ 5500 RPM). This means 1990 BMW Z1 will have an easier job in driving up hills or pulling heavy equipment than 2011 Fiat Siena.
Compare all specifications:
| 1990 BMW Z1 | 2011 Fiat Siena | |
| Make | BMW | Fiat |
| Model | Z1 | Siena |
| Year Released | 1990 | 2011 |
| Body Type | Roadster | Sedan |
| Engine Position | Front | Front |
| Engine Size | 2494 cc | 1581 cc |
| Engine Cylinders | 6 cylinders | 4 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 175 HP | 100 HP |
| Engine RPM | 5800 RPM | 5500 RPM |
| Torque | 230 Nm | 74 Nm |
| Torque RPM | 4000 RPM | 5500 RPM |
| Engine Bore Size | 82 mm | 86.4 mm |
| Engine Stroke Size | 78.8 mm | 67.4 mm |
| Engine Compression Ratio | 11.0:1 | 9.5:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Front |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 5 seats |
| Vehicle Weight | 1250 kg | 1074 kg |
| Vehicle Length | 3960 mm | 3550 mm |
| Vehicle Width | 1810 mm | 1640 mm |
| Vehicle Height | 1280 mm | 1440 mm |
| Wheelbase Size | 2450 mm | 2380 mm |
