2004 BMW 645Ci Cabrio 0-60, quarter mile, specs
| 0-60 mph | 6.0 seconds |
| 0-100 kph | 6.3 seconds |
| Top speed | 250 kph / 155 mph |
| Price | $88,000 |
| Curb weight | 1944 kilograms (4286 pounds) |
| Year introduced | 2004 |
| Displacement | 4400 cubic centimeters (4.4 liters / 269 cubic inches) |
| Maximum power | 333 metric horsepower (329 brake horsepower / 245 kilowatts) |
| Maximum torque | 450 Newton-meters (332 pound-feet) |
| Engine location | front-mounted |
| Drive | rear wheel drive |
BMW 645Ci Cabrio 0-60 and acceleration in miles per hour
| 0-10 mph | 0.9 s |
| 0-20 mph | 1.7 s |
| 0-30 mph | 2.6 s |
| 0-40 mph | 3.5 s |
| 0-50 mph | 4.6 s |
| 0-60 mph | 6.0 s |
| 0-70 mph | 7.9 s |
| 0-80 mph | 10.6 s |
| 0-90 mph | 13.2 s |
BMW 645Ci Cabrio quarter mile and acceleration in feet
| 300 feet | 6.4 s @ 63 mph |
| 1/8 mile | 10.0 s @ 83 mph |
| 1000 feet | 12.7 s @ 94 mph |
BMW 645Ci Cabrio acceleration times in kilometers per hour
| 0-10 kph | 0.6 s |
| 0-20 kph | 1.1 s |
| 0-30 kph | 1.6 s |
| 0-40 kph | 2.1 s |
| 0-50 kph | 2.6 s |
| 0-60 kph | 3.2 s |
| 0-70 kph | 3.8 s |
| 0-80 kph | 4.5 s |
| 0-90 kph | 5.3 s |
| 0-100 kph | 6.3 s |
| 0-110 kph | 7.6 s |
| 0-120 kph | 9.1 s |
| 0-130 kph | 10.8 s |
| 0-140 kph | 12.5 s |
| 0-150 kph | 13.9 s |
| 0-160 kph | 14.9 s |
BMW 645Ci Cabrio distance acceleration in meters
| 100 meters | 6.7 s @ 105 kph |
| 200 meters | 10.0 s @ 134 kph |
| 300 meters | 12.6 s @ 150 kph |
| 400 meters | 14.9 s @ 160 kph |
