2004 BMW Z4 vs. 1985 BMW 628
To start off, 2004 BMW Z4 is newer by 19 year(s). Which means there will be less support and parts availability for 1985 BMW 628. In addition, the cost of maintenance, including insurance, on 1985 BMW 628 would be higher. At 2,788 cc (6 cylinders), 1985 BMW 628 is equipped with a bigger engine. In terms of performance, 1985 BMW 628 (181 HP @ 6000 RPM) has 13 more horse power than 2004 BMW Z4. (168 HP @ 6250 RPM) In normal driving conditions, 1985 BMW 628 should accelerate faster than 2004 BMW Z4. With that said, vehicle weight also plays an important factor in acceleration. 1985 BMW 628 weights approximately 145 kg more than 2004 BMW Z4. 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, 1985 BMW 628 (240 Nm @ 4000 RPM) has 30 more torque (in Nm) than 2004 BMW Z4. (210 Nm @ 3500 RPM). This means 1985 BMW 628 will have an easier job in driving up hills or pulling heavy equipment than 2004 BMW Z4.
Compare all specifications:
| 2004 BMW Z4 | 1985 BMW 628 | |
| Make | BMW | BMW |
| Model | Z4 | 628 |
| Year Released | 2004 | 1985 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2171 cc | 2788 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 4 valves | 2 valves |
| Horse Power | 168 HP | 181 HP |
| Engine RPM | 6250 RPM | 6000 RPM |
| Torque | 210 Nm | 240 Nm |
| Torque RPM | 3500 RPM | 4000 RPM |
| Engine Compression Ratio | 10.8:1 | 9.3:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1325 kg | 1470 kg |
| Vehicle Length | 4100 mm | 4760 mm |
| Vehicle Width | 1790 mm | 1730 mm |
| Vehicle Height | 1310 mm | 1370 mm |
| Wheelbase Size | 2500 mm | 2640 mm |
| Fuel Tank Capacity | 55 L | 70 L |
