Porsche Cayman S vs BMW i8
| Category | BMW i8 | Porsche Cayman S |
|---|---|---|
| Max power (ps / bhp) | 374 / 369 | 325 / 321 |
| Max torque (Nm / lb-ft) | 570 / 420 | 370 / 273 |
| Curb weight (kg / lb) | 1519 / 3349 | 1398 / 3082 |
| Power / tonne (ps / bhp) | 246 / 243 | 232 / 229 |
| Average price | €132,000 | €75,000 |
Lap Times
Acceleration (mph)
| Speed & distance | BMW i8 | Porsche Cayman S |
|---|---|---|
| 0 - 30 mph | 1.9 s | 1.4 s |
| 0 - 40 mph | 2.7 s | 2.1 s |
| 0 - 50 mph | 3.5 s | 3.0 s |
| 0 - 60 mph | 3.6 s | 3.9 s |
| 0 - 70 mph | 5.7 s | 5.2 s |
| 0 - 80 mph | 7.0 s | 6.6 s |
| 0 - 90 mph | 8.5 s | 8.3 s |
| 0 - 100 mph | 9.0 s | 10.0 s |
| Est. 1/8 mile | 8.8 s @ 96.9 mph | 9.0 s @ 95.1 mph |
| 1/4 mile | 12.1 s @ 116.2 mph | 12.4 s @ 112.1 mph |
Acceleration (kph)
| Speed & distance | BMW i8 | Porsche Cayman S |
|---|---|---|
| 0 - 40 kph | 1.4 s | 1.3 s |
| 0 - 50 kph | 1.7 s | 1.7 s |
| 0 - 60 kph | 2.2 s | 2.3 s |
| 0 - 80 kph | 3.1 s | 3.4 s |
| 0 - 100 kph | 4.2 s | 4.4 s |
| 0 - 120 kph | 5.6 s | 6.3 s |
| 0 - 130 kph | 6.4 s | 7.0 s |
| 0 - 140 kph | 7.2 s | 8.3 s |
| 0 - 160 kph | 9.2 s | 10.3 s |
| 0 - 180 kph | 11.6 s | 13.4 s |
| 0 - 200 kph | 14.4 s | 15.9 s |
Rolling acceleration
| Speed | BMW i8 | Porsche Cayman S |
|---|---|---|
| 60 - 100 kph (4) | 2.9 s | 5.0 s |
| 80 - 120 kph (4) | 3.2 s | 5.4 s |
| 80 - 120 kph (5) | 3.9 s | 6.3 s |
| 80 - 120 kph (6) | 4.4 s | 7.9 s |
| 80 - 160 kph (4) | 7.2 s | 10.6 s |
| 80 - 160 kph (5) | 8.9 s | 13.5 s |
| 80 - 160 kph (6) | 10.7 s | 18.3 s |
| Est. 100 - 200 kph | 10.3 s | 11.9 s |
General performance
| Category | BMW i8 | Porsche Cayman S |
|---|---|---|
| Top speed | 254 kph (158 mph) | 283 kph (176 mph) |
| Est. max acceleration | 0.72 g (7 m/s²) | 0.68 g (7 m/s²) |
| 18m slalom | 69.4 kph (43.1 mph) | 70.4 kph (43.7 mph) |
| Fuel economy | 6.2 l/100 km (38 mpg US / 46 UK) | 8.0 l/100 km (29 mpg US / 35 UK) |
| Lateral acceleration | 0.93 g (9 m/s²) | 1.04 g (10 m/s²) |
| 100 kph - 0 | 34 m (112 ft) | 32 m (106 ft) |
| 200 kph - 0 | 149 m (490 ft) | 129 m (425 ft) |
| 60 mph - 0 | 34 m (111 ft) | 31 m (101 ft) |
Summary
| Category | BMW i8 | Porsche Cayman S |
|---|---|---|
| Track Performance | 94 | 100 |
| Straight line speed | 100 | 92 |
| Overall | 99 | 100 |
Verdict
There is no clear winner in this comparison.
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Acceleration graph
