2009 Cadillac XLR vs. 2007 BMW 645
To start off, 2009 Cadillac XLR is newer by 2 year(s). Which means there will be less support and parts availability for 2007 BMW 645. In addition, the cost of maintenance, including insurance, on 2007 BMW 645 would be higher. At 4,565 cc (8 cylinders), 2009 Cadillac XLR is equipped with a bigger engine. In terms of performance, 2007 BMW 645 (328 HP @ 6100 RPM) has 7 more horse power than 2009 Cadillac XLR. (321 HP @ 6400 RPM) In normal driving conditions, 2007 BMW 645 should accelerate faster than 2009 Cadillac XLR. With that said, vehicle weight also plays an important factor in acceleration. 2007 BMW 645 weights approximately 180 kg more than 2009 Cadillac XLR. 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, 2007 BMW 645 (450 Nm @ 3600 RPM) has 30 more torque (in Nm) than 2009 Cadillac XLR. (420 Nm @ 4400 RPM). This means 2007 BMW 645 will have an easier job in driving up hills or pulling heavy equipment than 2009 Cadillac XLR.
Compare all specifications:
| 2009 Cadillac XLR | 2007 BMW 645 | |
| Make | Cadillac | BMW |
| Model | XLR | 645 |
| Year Released | 2009 | 2007 |
| Body Type | Convertible | Convertible |
| Engine Position | Front | Front |
| Engine Size | 4565 cc | 4398 cc |
| Engine Cylinders | 8 cylinders | 8 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 321 HP | 328 HP |
| Engine RPM | 6400 RPM | 6100 RPM |
| Torque | 420 Nm | 450 Nm |
| Torque RPM | 4400 RPM | 3600 RPM |
| Engine Compression Ratio | 3.7:1 | 10.0:1 |
| Fuel Type | Gasoline | Gasoline - Premium |
| Drive Type | Rear | Rear |
| Transmission Type | Automatic | Automatic |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1635 kg | 1815 kg |
| Vehicle Length | 4520 mm | 4830 mm |
| Vehicle Width | 1840 mm | 1860 mm |
| Vehicle Height | 1290 mm | 1380 mm |
| Wheelbase Size | 2690 mm | 2790 mm |
| Fuel Consumption Overall | 13.1 L/100km | 13 L/100km |
| Fuel Tank Capacity | 68 L | 70 L |
