1991 BMW Z1 vs. 1999 Porsche Boxster
To start off, 1999 Porsche Boxster is newer by 8 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 2,687 cc (6 cylinders), 1999 Porsche Boxster is equipped with a bigger engine. In terms of performance, 1999 Porsche Boxster (217 HP @ 6400 RPM) has 42 more horse power than 1991 BMW Z1. (175 HP @ 5800 RPM) In normal driving conditions, 1999 Porsche Boxster should accelerate faster than 1991 BMW Z1. With that said, vehicle weight also plays an important factor in acceleration. 1999 Porsche Boxster weights approximately 10 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, 1999 Porsche Boxster (266 Nm @ 4750 RPM) has 36 more torque (in Nm) than 1991 BMW Z1. (230 Nm @ 4000 RPM). This means 1999 Porsche Boxster will have an easier job in driving up hills or pulling heavy equipment than 1991 BMW Z1.
Compare all specifications:
| 1991 BMW Z1 | 1999 Porsche Boxster | |
| Make | BMW | Porsche |
| Model | Z1 | Boxster |
| Year Released | 1991 | 1999 |
| Body Type | Roadster | Convertible |
| Engine Position | Front | Middle |
| Engine Size | 2497 cc | 2687 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | boxer |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 175 HP | 217 HP |
| Engine RPM | 5800 RPM | 6400 RPM |
| Torque | 230 Nm | 266 Nm |
| Torque RPM | 4000 RPM | 4750 RPM |
| Engine Bore Size | 82 mm | 85.5 mm |
| Engine Stroke Size | 78.8 mm | 78 mm |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 2 seats |
| Vehicle Weight | 1250 kg | 1260 kg |
| Vehicle Length | 3960 mm | 4320 mm |
| Vehicle Width | 1810 mm | 1780 mm |
| Vehicle Height | 1280 mm | 1300 mm |
| Wheelbase Size | 2450 mm | 2360 mm |
