1998 Porsche 911 vs. 2008 BMW 645
To start off, 2008 BMW 645 is newer by 10 year(s). Which means there will be less support and parts availability for 1998 Porsche 911. In addition, the cost of maintenance, including insurance, on 1998 Porsche 911 would be higher. At 4,398 cc (8 cylinders), 2008 BMW 645 is equipped with a bigger engine. In terms of performance, 1998 Porsche 911 (537 HP @ 7000 RPM) has 209 more horse power than 2008 BMW 645. (328 HP @ 6100 RPM). In normal driving conditions, 1998 Porsche 911 should accelerate faster than 2008 BMW 645. With that said, vehicle weight also plays an important factor in acceleration. 2008 BMW 645 weights approximately 540 kg more than 1998 Porsche 911.
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, 1998 Porsche 911 (600 Nm @ 4250 RPM) has 150 more torque (in Nm) than 2008 BMW 645. (450 Nm @ 3600 RPM). This means 1998 Porsche 911 will have an easier job in driving up hills or pulling heavy equipment than 2008 BMW 645. 2008 BMW 645 has automatic transmission and 1998 Porsche 911 has manual transmission. 1998 Porsche 911 will offer better control over acceleration and deceleration in addition to better fuel efficiency overall. 2008 BMW 645 will be easier to drive especially in heavy traffic.
Compare all specifications:
| 1998 Porsche 911 | 2008 BMW 645 | |
| Make | Porsche | BMW |
| Model | 911 | 645 |
| Year Released | 1998 | 2008 |
| Body Type | Coupe | Coupe |
| Engine Position | Middle | Front |
| Engine Size | 3164 cc | 4398 cc |
| Engine Cylinders | 6 cylinders | 8 cylinders |
| Engine Type | boxer | V |
| Valves per Cylinder | 4 valves | 4 valves |
| Horse Power | 537 HP | 328 HP |
| Engine RPM | 7000 RPM | 6100 RPM |
| Torque | 600 Nm | 450 Nm |
| Torque RPM | 4250 RPM | 3600 RPM |
| Engine Bore Size | 95 mm | 92.1 mm |
| Engine Stroke Size | 74.4 mm | 82.7 mm |
| Fuel Type | Gasoline | Gasoline - Premium |
| Acceleration 0-100mph | 3.7 seconds | 5.6 seconds |
| Drive Type | Rear | Rear |
| Transmission Type | Manual | Automatic |
| Number of Seats | 2 seats | 4 seats |
| Number of Doors | 2 doors | 2 doors |
| Vehicle Weight | 1150 kg | 1690 kg |
| Vehicle Length | 4720 mm | 4830 mm |
| Vehicle Width | 1990 mm | 1860 mm |
| Vehicle Height | 1180 mm | 1380 mm |
| Wheelbase Size | 2280 mm | 2790 mm |
| Fuel Tank Capacity | 100 L | 70 L |
