Mercedes-Benz SLK 350 vs BMW 645Ci Cabrio
| Category | BMW 645Ci Cabrio | SLK 350 |
|---|---|---|
| Engine layout | 4.4 l V8 | 3.5 l V6 |
| Max power (ps / bhp) | 333 / 329 | 272 / 268 |
| Max torque (Nm / lb-ft) | 450 / 332 | 350 / 258 |
| Curb weight (kg / lb) | 1947 / 4292 | 1486 / 3276 |
| Power / tonne (ps / bhp) | 171 / 169 | 183 / 181 |
| Average price | €90,000 | €52,000 |
Lap Times
| Track | BMW 645Ci Cabrio | SLK 350 |
|---|---|---|
| Hockenheim Short | 1:19.60 | 1:18.70 |
| Autozeitung test track | 1:48.40 | 1:50.10 |
Acceleration
| Speed & distance | BMW 645Ci Cabrio | SLK 350 |
|---|---|---|
| 0 - 40 kph | 1.8 s | 1.6 s |
| 0 - 60 kph | 3.2 s | 2.8 s |
| 0 - 80 kph | 4.7 s | 4.1 s |
| 0 - 100 kph | 6.1 s | 5.5 s |
| 0 - 120 kph | 8.8 s | 7.8 s |
| 0 - 140 kph | 11.8 s | 10.6 s |
| 0 - 160 kph | 15.0 s | 13.7 s |
| 0 - 180 kph | 19.2 s | 17.7 s |
| 0 - 100 mph | 14.9 s | 12.9 s |
| Est. 1/8 mile | 10.0 s @ 83.3 mph | 9.8 s @ 87.6 mph |
Rolling acceleration
| Speed | BMW 645Ci Cabrio | SLK 350 |
|---|---|---|
| 80 - 120 kph (4) | 6.4 s | 5.2 s |
| 80 - 120 kph (5) | 8.0 s | 6.3 s |
| 80 - 120 kph (6) | 9.7 s | 8.0 s |
| 80 - 160 kph (4) | 13.3 s | 10.9 s |
| 80 - 160 kph (5) | 16.1 s | 13.3 s |
| 80 - 160 kph (6) | 19.9 s | 17.4 s |
| Est. 100 - 140 kph | 5.6 s | 5.0 s |
General performance
| Category | BMW 645Ci Cabrio | SLK 350 |
|---|---|---|
| Top speed | 250 kph (155 mph) | 250 kph (155 mph) |
| 18m slalom | 62.3 kph (38.7 mph) | 66.1 kph (41.1 mph) |
| Fuel economy | 12.8 l/100 km (18 mpg US / 22 UK) | 11.7 l/100 km (20 mpg US / 24 UK) |
| 100 kph - 0 | 37 m (122 ft) | 35 m (115 ft) |
| 200 kph - 0 | 148 m (487 ft) | 147 m (483 ft) |
Summary
| Category | BMW 645Ci Cabrio | SLK 350 |
|---|---|---|
| Track Performance | 100 | 99 |
| Straight line speed | 78 | 100 |
| Overall | 92 | 100 |
Verdict
SLK 350 is the fastest by considerable margin.
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Acceleration graph
