Porsche Cayman S vs BMW i8

Picture of Porsche Cayman S (981)
Picture of BMW i8
Category Porsche Cayman SBMW i8
Max power (ps / bhp) 325 / 321374 / 369
Max torque (Nm / lb-ft) 370 / 273570 / 420
Curb weight (kg / lb) 1398 / 30821519 / 3349
Power / tonne (ps / bhp) 232 / 229246 / 243
Average price €75,000€132,000

Acceleration (mph)

Speed & distance Porsche Cayman SBMW i8
0 - 30 mph 1.4 s1.9 s
0 - 40 mph 2.1 s2.7 s
0 - 50 mph 3.0 s3.5 s
0 - 60 mph 3.9 s3.6 s
0 - 70 mph 5.2 s5.7 s
0 - 80 mph 6.6 s7.0 s
0 - 90 mph 8.3 s8.5 s
0 - 100 mph 10.0 s9.0 s
Est. 1/8 mile 9.0 s @ 95.1 mph8.8 s @ 96.9 mph
1/4 mile 12.4 s @ 112.1 mph12.1 s @ 116.2 mph

Acceleration (kph)

Speed & distance Porsche Cayman SBMW i8
0 - 40 kph 1.3 s1.4 s
0 - 50 kph 1.7 s1.7 s
0 - 60 kph 2.3 s2.2 s
0 - 80 kph 3.4 s3.1 s
0 - 100 kph 4.4 s4.2 s
0 - 120 kph 6.3 s5.6 s
0 - 130 kph 7.0 s6.4 s
0 - 140 kph 8.3 s7.2 s
0 - 160 kph 10.3 s9.2 s
0 - 180 kph 13.4 s11.6 s
0 - 200 kph 15.9 s14.4 s

Rolling acceleration

Speed Porsche Cayman SBMW i8
60 - 100 kph (4) 5.0 s2.9 s
80 - 120 kph (4) 5.4 s3.2 s
80 - 120 kph (5) 6.3 s3.9 s
80 - 120 kph (6) 7.9 s4.4 s
80 - 160 kph (4) 10.6 s7.2 s
80 - 160 kph (5) 13.5 s8.9 s
80 - 160 kph (6) 18.3 s10.7 s
Est. 100 - 200 kph 11.9 s10.3 s

General performance

Category Porsche Cayman SBMW i8
Top speed 283 kph (176 mph)254 kph (158 mph)
Est. max acceleration 0.68 g (7 m/s²)0.72 g (7 m/s²)
18m slalom 70.4 kph (43.7 mph)69.4 kph (43.1 mph)
Fuel economy 8.0 l/100 km (29 mpg US / 35 UK)6.2 l/100 km (38 mpg US / 46 UK)
Lateral acceleration 1.04 g (10 m/s²)0.93 g (9 m/s²)
100 kph - 0 32 m (106 ft)34 m (112 ft)
200 kph - 0 129 m (425 ft)149 m (490 ft)
60 mph - 0 31 m (101 ft)34 m (111 ft)

Summary

Category Porsche Cayman SBMW i8
Track Performance 600565
Straight line speed 30673443
Total 36674008

Verdict

i8 is the fastest by a small margin.

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