Porsche Cayman S vs BMW 645ci Coupe
| Category | BMW 645ci Coupe | Porsche Cayman S |
|---|---|---|
| Engine layout | 4.4 l V8 | 3.4 l B6 |
| Max power (ps / bhp) | 333 / 328 | 295 / 291 |
| Max torque (Nm / lb-ft) | 450 / 332 | 340 / 251 |
| Curb weight (kg / lb) | 1732 / 3818 | 1409 / 3106 |
| Power / tonne (ps / bhp) | 192 / 190 | 209 / 207 |
| Average price | €76,000 | €65,000 |
Lap Times
| Track | BMW 645ci Coupe | Porsche Cayman S |
|---|---|---|
| Autozeitung test track | 1:43.80 | 1:41.20 |
| Vairano Handling Course | 1:24.14 | 1:23.45 |
| Hockenheim Short | 1:16.80 | 1:15.50 |
| Zolder | 1:54.72 | 1:52.82 |
Acceleration
| Speed & distance | BMW 645ci Coupe | Porsche Cayman S |
|---|---|---|
| 0 - 80 kph | 4.3 s | 4.1 s |
| 0 - 100 kph | 5.4 s | 5.1 s |
| 0 - 120 kph | 7.9 s | 7.3 s |
| 0 - 140 kph | 10.2 s | 9.4 s |
| 0 - 160 kph | 12.9 s | 11.7 s |
| 0 - 180 kph | 16.7 s | 15.0 s |
| 0 - 200 kph | 20.2 s | 18.7 s |
| 80 - 120 kph (5) | 7.1 s | 6.4 s |
| 80 - 120 kph (6) | 9.1 s | 7.9 s |
| Est. 100 - 140 kph | 4.6 s | 4.2 s |
| Est. 100 - 200 kph | 14.9 s | 13.5 s |
| 0 - 60 mph | 5.3 s | 4.8 s |
| 0 - 100 mph | 12.4 s | 11.4 s |
| 0 - 120 mph | 19.7 s | 16.9 s |
| Est. 1/8 mile | 9.8 s @ 87.6 mph | 9.5 s @ 90.1 mph |
| 1/4 mile | 13.7 s | 13.2 s @ 106.3 mph |
General performance
| Category | BMW 645ci Coupe | Porsche Cayman S |
|---|---|---|
| Top speed | 252 kph (157 mph) | 275 kph (171 mph) |
| Est. max acceleration | 0.54 g (5 m/s²) | 0.58 g (6 m/s²) |
| 18m slalom | 65.3 kph (40.6 mph) | 71.8 kph (44.6 mph) |
| Fuel economy | 8.6 l/100 km (27 mpg US / 33 UK) | 7.8 l/100 km (30 mpg US / 36 UK) |
| Lateral acceleration | 0.94 g (9 m/s²) | 0.99 g (10 m/s²) |
| 100 kph - 0 | 37 m (121 ft) | 34 m (111 ft) |
| 60 mph - 0 | 35 m (115 ft) | 32 m (104 ft) |
| 70 mph - 0 | 52 m (169 ft) | 43 m (141 ft) |
Summary
| Category | BMW 645ci Coupe | Porsche Cayman S |
|---|---|---|
| Track Performance | 95 | 100 |
| Straight line speed | 78 | 100 |
| Overall | 88 | 100 |
Verdict
Cayman S is the fastest by considerable margin.
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Acceleration graph
