2007 BMW 318 vs. 1991 BMW Z1
To start off, 2007 BMW 318 is newer by 16 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 2,497 cc (6 cylinders), 1991 BMW Z1 is equipped with a bigger engine. In terms of performance, 1991 BMW Z1 (175 HP @ 5800 RPM) has 47 more horse power than 2007 BMW 318. (128 HP @ 5750 RPM) In normal driving conditions, 1991 BMW Z1 should accelerate faster than 2007 BMW 318. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW 318 weights approximately 185 kg more than 1991 BMW Z1.
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, 1991 BMW Z1 (230 Nm @ 4000 RPM) has 50 more torque (in Nm) than 2007 BMW 318. (180 Nm @ 3250 RPM). This means 1991 BMW Z1 will have an easier job in driving up hills or pulling heavy equipment than 2007 BMW 318.
Compare all specifications:
| 2007 BMW 318 | 1991 BMW Z1 | |
| Make | BMW | BMW |
| Model | 318 | Z1 |
| Year Released | 2007 | 1991 |
| Body Type | Sedan | Roadster |
| Engine Position | Front | Front |
| Engine Size | 1995 cc | 2497 cc |
| Engine Cylinders | 4 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 128 HP | 175 HP |
| Engine RPM | 5750 RPM | 5800 RPM |
| Torque | 180 Nm | 230 Nm |
| Torque RPM | 3250 RPM | 4000 RPM |
| Engine Bore Size | 84 mm | 82 mm |
| Engine Stroke Size | 90 mm | 78.8 mm |
| Engine Compression Ratio | 10.5:1 | 11.0:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 5 seats | 2 seats |
| Vehicle Weight | 1435 kg | 1250 kg |
| Vehicle Length | 4230 mm | 3960 mm |
| Vehicle Width | 1820 mm | 1810 mm |
| Vehicle Height | 1430 mm | 1280 mm |
| Wheelbase Size | 2770 mm | 2450 mm |
