1991 BMW Z1 vs. 1998 Porsche 911
To start off, 1998 Porsche 911 is newer by 7 year(s). Which means there will be less support and parts availability for 1991 BMW Z1. In addition, the cost of maintenance, including insurance, on 1991 BMW Z1 would be higher. At 3,387 cc (6 cylinders), 1998 Porsche 911 is equipped with a bigger engine. In terms of performance, 1998 Porsche 911 (296 HP @ 6800 RPM) has 121 more horse power than 1991 BMW Z1. (175 HP @ 5800 RPM) In normal driving conditions, 1998 Porsche 911 should accelerate faster than 1991 BMW Z1. With that said, vehicle weight also plays an important factor in acceleration. 1998 Porsche 911 weights approximately 76 kg more than 1991 BMW Z1. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Both vehicles are rear wheel drive (RWD) - it offers better handling in dry conditions; in addition, if you are looking to drift, both vehicles do the job better than front wheel drive vehicles. 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 Porsche 911 (350 Nm @ 4600 RPM) has 120 more torque (in Nm) than 1991 BMW Z1. (230 Nm @ 4000 RPM). This means 1998 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 1991 BMW Z1.
Compare all specifications:
| 1991 BMW Z1 | 1998 Porsche 911 | |
| Make | BMW | Porsche |
| Model | Z1 | 911 |
| Year Released | 1991 | 1998 |
| Body Type | Roadster | Coupe |
| Engine Position | Front | Rear |
| Engine Size | 2497 cc | 3387 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 175 HP | 296 HP |
| Engine RPM | 5800 RPM | 6800 RPM |
| Torque | 230 Nm | 350 Nm |
| Torque RPM | 4000 RPM | 4600 RPM |
| Engine Bore Size | 82 mm | 96 mm |
| Engine Stroke Size | 78.8 mm | 78 mm |
| Engine Compression Ratio | 11.0:1 | 11.3:1 |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 4 seats |
| Vehicle Weight | 1250 kg | 1326 kg |
| Vehicle Length | 3960 mm | 4440 mm |
| Vehicle Width | 1810 mm | 1770 mm |
| Vehicle Height | 1280 mm | 1310 mm |
| Wheelbase Size | 2450 mm | 2360 mm |
