2005 BMW Z4 vs. 1986 BMW 325
To start off, 2005 BMW Z4 is newer by 19 year(s). Which means there will be less support and parts availability for 1986 BMW 325. In addition, the cost of maintenance, including insurance, on 1986 BMW 325 would be higher. At 2,493 cc (6 cylinders), 1986 BMW 325 is equipped with a bigger engine. In terms of performance, 1986 BMW 325 (171 HP @ 5800 RPM) has 3 more horse power than 2005 BMW Z4. (168 HP @ 6250 RPM) In normal driving conditions, 1986 BMW 325 should accelerate faster than 2005 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW Z4 weights approximately 70 kg more than 1986 BMW 325.
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, 1986 BMW 325 (226 Nm @ 4000 RPM) has 16 more torque (in Nm) than 2005 BMW Z4. (210 Nm @ 3500 RPM). This means 1986 BMW 325 will have an easier job in driving up hills or pulling heavy equipment than 2005 BMW Z4.
Compare all specifications:
| 2005 BMW Z4 | 1986 BMW 325 | |
| Make | BMW | BMW |
| Model | Z4 | 325 |
| Year Released | 2005 | 1986 |
| Body Type | Convertible | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2171 cc | 2493 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 168 HP | 171 HP |
| Engine RPM | 6250 RPM | 5800 RPM |
| Torque | 210 Nm | 226 Nm |
| Torque RPM | 3500 RPM | 4000 RPM |
| Engine Compression Ratio | 10.8:1 | 9.7:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1325 kg | 1255 kg |
| Vehicle Length | 4100 mm | 4330 mm |
| Vehicle Width | 1790 mm | 1650 mm |
| Vehicle Height | 1310 mm | 1390 mm |
| Wheelbase Size | 2500 mm | 2630 mm |
| Fuel Tank Capacity | 55 L | 90 L |
