1985 BMW 628 vs. 2009 BMW 550
To start off, 2009 BMW 550 is newer by 24 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, 2009 BMW 550 (362 HP @ 6300 RPM) has 181 more horse power than 1985 BMW 628. (181 HP @ 6000 RPM) In normal driving conditions, 2009 BMW 550 should accelerate faster than 1985 BMW 628. With that said, vehicle weight also plays an important factor in acceleration. 2009 BMW 550 weights approximately 190 kg more than 1985 BMW 628. 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, 2009 BMW 550 (490 Nm @ 3400 RPM) has 250 more torque (in Nm) than 1985 BMW 628. (240 Nm @ 4000 RPM). This means 2009 BMW 550 will have an easier job in driving up hills or pulling heavy equipment than 1985 BMW 628.
Compare all specifications:
| 1985 BMW 628 | 2009 BMW 550 | |
| Make | BMW | BMW |
| Model | 628 | 550 |
| Year Released | 1985 | 2009 |
| Engine Position | Front | Front |
| Engine Size | 2788 cc | 2495 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | in-line |
| Valves per Cylinder | 2 valves | 4 valves |
| Horse Power | 181 HP | 362 HP |
| Engine RPM | 6000 RPM | 6300 RPM |
| Torque | 240 Nm | 490 Nm |
| Torque RPM | 4000 RPM | 3400 RPM |
| Engine Compression Ratio | 9.3:1 | 10.5:1 |
| Fuel Type | Gasoline | Gasoline |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 5 doors |
| Vehicle Weight | 1470 kg | 1660 kg |
| Vehicle Length | 4760 mm | 4850 mm |
| Vehicle Width | 1730 mm | 1490 mm |
| Vehicle Height | 1370 mm | 1850 mm |
| Wheelbase Size | 2640 mm | 2890 mm |
| Fuel Tank Capacity | 70 L | 70 L |
