1985 BMW 628 vs. 2006 BMW Z4
To start off, 2006 BMW Z4 is newer by 21 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 2,979 cc (6 cylinders), 2006 BMW Z4 is equipped with a bigger engine. In terms of performance, 2006 BMW Z4 (228 HP @ 5900 RPM) has 47 more horse power than 1985 BMW 628. (181 HP @ 6000 RPM) In normal driving conditions, 2006 BMW Z4 should accelerate faster than 1985 BMW 628. With that said, vehicle weight also plays an important factor in acceleration. 1985 BMW 628 weights approximately 105 kg more than 2006 BMW Z4.
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, 2006 BMW Z4 (301 Nm @ 3500 RPM) has 61 more torque (in Nm) than 1985 BMW 628. (240 Nm @ 4000 RPM). This means 2006 BMW Z4 will have an easier job in driving up hills or pulling heavy equipment than 1985 BMW 628.
Compare all specifications:
| 1985 BMW 628 | 2006 BMW Z4 | |
| Make | BMW | BMW |
| Model | 628 | Z4 |
| Year Released | 1985 | 2006 |
| Body Type | Coupe | Convertible |
| Engine Position | Front | Front |
| Engine Size | 2788 cc | 2979 cc |
| Engine Cylinders | 6 cylinders | 6 cylinders |
| Engine Type | in-line | in-line |
| Horse Power | 181 HP | 228 HP |
| Engine RPM | 6000 RPM | 5900 RPM |
| Torque | 240 Nm | 301 Nm |
| Torque RPM | 4000 RPM | 3500 RPM |
| Engine Bore Size | 86 mm | 84 mm |
| Engine Stroke Size | 80 mm | 89.6 mm |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Number of Seats | 4 seats | 2 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1470 kg | 1365 kg |
| Vehicle Length | 4760 mm | 4100 mm |
| Vehicle Width | 1730 mm | 1790 mm |
| Vehicle Height | 1370 mm | 1310 mm |
| Wheelbase Size | 2640 mm | 2500 mm |
| Fuel Tank Capacity | 70 L | 55 L |
