2009 BMW 135 vs. 2008 BMW 645
To start off, 2009 BMW 135 is newer by 1 year(s). Which means there will be less support and parts availability for 2008 BMW 645. In addition, the cost of maintenance, including insurance, on 2008 BMW 645 would be higher. At 4,398 cc (8 cylinders), 2008 BMW 645 is equipped with a bigger engine. In terms of performance, 2008 BMW 645 (328 HP @ 6100 RPM) has 27 more horse power than 2009 BMW 135. (301 HP @ 5800 RPM) In normal driving conditions, 2008 BMW 645 should accelerate faster than 2009 BMW 135. With that said, vehicle weight also plays an important factor in acceleration. 2008 BMW 645 weights approximately 165 kg more than 2009 BMW 135. 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, 2008 BMW 645 (450 Nm @ 3600 RPM) has 43 more torque (in Nm) than 2009 BMW 135. (407 Nm @ 1400 RPM). This means 2008 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2009 BMW 135.
Compare all specifications:
| 2009 BMW 135 | 2008 BMW 645 | |
| Make | BMW | BMW |
| Model | 135 | 645 |
| Year Released | 2009 | 2008 |
| Body Type | Convertible | Coupe |
| Engine Position | Front | Front |
| Engine Size | 2979 cc | 4398 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | in-line | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 301 HP | 328 HP |
| Engine RPM | 5800 RPM | 6100 RPM |
| Torque | 407 Nm | 450 Nm |
| Torque RPM | 1400 RPM | 3600 RPM |
| Engine Compression Ratio | 12.0:1 | 10.5:1 |
| Fuel Type | Gasoline - Premium | Gasoline |
| Top Speed | 250 km/hour | 245 km/hour |
| Acceleration 0-100mph | 5.6 seconds | 5.6 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1525 kg | 1690 kg |
| Vehicle Length | 4370 mm | 4830 mm |
| Vehicle Width | 1750 mm | 1860 mm |
| Vehicle Height | 1420 mm | 1380 mm |
| Wheelbase Size | 2670 mm | 2790 mm |
| Fuel Consumption Overall | 11.8 L/100km | 11.7 L/100km |
| Fuel Tank Capacity | 53 L | 70 L |
