Car comparison

Porsche Cayman (981C) 2.7vsAlfa Romeo 4C 1.7

Compare specs, acceleration, fuel consumption, dimensions, practicality, and estimated running costs side by side.

New comparison

Porsche Cayman (981C)

2.7

275 hp2706 ccGasolineRWDDual-clutchNaturally aspiratedCoupe2013-2016
VS

Alfa Romeo 4C

1.7

240 hp1742 ccGasolineRWDAutomaticTurbochargedCoupe2013-2016

Comparison overview

Use the estimates as comparison hints and verify exact figures before making decisions.

Best choices

Alfa Romeo 4C 1.7

  • Quickest 0-100 km/h
    4.5 s
  • Highest torque
    350 Nm
    258 lb-ft
  • Lightest
    895 kg
    1,973 lb
  • Best power-to-weight
    268 hp/t
    200 kW/t
    3.7 kg/hp
  • Lowest combined fuel consumption
    6.8 L/100 km
    34.6 mpg US
    41.5 mpg UK
  • Lowest city consumption
    9.8 L/100 km
    24.0 mpg US
    28.8 mpg UK
  • Lowest highway consumption
    5.0 L/100 km
    47.0 mpg US
    56.5 mpg UK
  • Lowest CO2 emissions
    157 g/km
  • Best performance score
    67/100
  • Best economy score
    89/100

Porsche Cayman (981C) 2.7

  • Fastest top speed
    264 km/h
    164 mph
  • Most powerful
    275 hp
    205 kW
  • Best estimated range
    810 km
    503 mi
  • Largest trunk
    425 L
  • Best overall score
    56/100
  • Best practicality score
    42/100

Specification comparison

Specification comparison
ModelPorscheCayman (981C)2.7Alfa Romeo4C1.7
Power
275hp205kW
240hp179kW
Torque
290Nm214lb-ft
350Nm258lb-ft
Curb weight
1,360kg2,998lb
895kg1,973lb
Gross weight
1,685kg3,715lb
-
Top speed
264 km/h
164 mph
258 km/h
160 mph
To 99% top speed
71.9s99% target: 261 km/h / 162 mph
Calculated
52.1s99% target: 255 km/h / 159 mph
Calculated
0-100 km/h
5.6s
4.5s
0-200 km/h
19.1s
Calculated
15.2s
Calculated
0-60 mph
5.3s
Calculated
4.3s
Calculated
Fuel consumption
7.9L/100 km29.8mpg US35.8mpg UK
6.8L/100 km34.6mpg US41.5mpg UK
Fuel consumption city
10.9L/100 km21.6mpg US25.9mpg UK
9.8L/100 km24mpg US28.8mpg UK
Fuel consumption highway
6.2L/100 km37.9mpg US45.6mpg UK
5L/100 km47mpg US56.5mpg UK
Quarter mile
13.7s
Calculated
12.6s
Calculated
Power-to-weight
202hp/t151kW/t92hp/1000 lb
Calculated
268hp/t200kW/t122hp/1000 lb
Calculated
Torque-to-weight
213Nm/t143lb-ft/ton
Calculated
391Nm/t262lb-ft/ton
Calculated
Estimated range
810km503mi
Calculated
588km366mi
Calculated
Displacement
2,706cc165cu in
1,742cc106cu in
Length
4,380mm172in
3,989mm157in
Width
1,801mm71in
1,864mm73in
Height
1,294mm51in
1,183mm47in
Wheelbase
2,475mm97in
2,380mm94in
Front track-
1,639mm65in
Rear track-
1,604mm63in
Ground clearance-
114mm4in
Trunk volume
425L
110L
Doors
2
2
Seats
2
2
Fuel tank
64L
40L
CO2 emissions
183g/km
157g/km

Performance charts

Use the estimates as comparison hints and verify exact figures before making decisions.

Dyno simulation

Estimated stock-style power and torque curves by engine speed.

Porsche Cayman (981C) 2.7Alfa Romeo 4C 1.7PowerTorque
  • Porsche Cayman (981C) 2.7: Power / Torque
  • Alfa Romeo 4C 1.7: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
PorscheCayman (981C)2.77,400 rpm4,500-6,500 rpm7,650 rpm
Alfa Romeo4C1.76,000 rpm2,200-4,250 rpm6,500 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorscheCayman (981C)2.7Alfa Romeo4C1.7
Acceleration checkpoints
0-60 mph
0-97 km/h
5.3 s
4.3 s
0-100 km/h
0-62 mph
5.6 s
4.5 s
0-200 km/h
0-124 mph
19.1 s
15.2 s
Top speed
264 km/h
164 mph
258 km/h
160 mph
Drag race simulation
60 ft
18 m
2.3 s
2.1 s
330 ft
101 m
6.0 s
5.5 s
1/8 mile
201 m
9.0 s
8.2 s
1000 ft
305 m
11.5 s
10.6 s
1/4 mile
402 m
13.7 s
12.6 s
Trap speed
1/4 mile
402 m
172 km/h
107 mph
184 km/h
115 mph

Power comparison

Bar comparison chart for Power. Higher is better · hp / kW

Chart data table
VehicleValue
PorscheCayman (981C)2.7
275 hp
205 kW
Alfa Romeo4C1.7
240 hp
179 kW

Porsche Cayman (981C) 2.7 has 35 hp more than Alfa Romeo 4C 1.7.

The biggest power difference is between Alfa Romeo 4C 1.7 and Porsche Cayman (981C) 2.7: 35 hp (26 kW).

Torque comparison

Bar comparison chart for Torque. Higher is better · Nm / lb-ft

Chart data table
VehicleValue
PorscheCayman (981C)2.7
290 Nm
214 lb-ft
Alfa Romeo4C1.7
350 Nm
258 lb-ft

Curb weight comparison

Bar comparison chart for Curb weight. Lower is better · kg / lb

Chart data table
VehicleValue
PorscheCayman (981C)2.7
1,360 kg
2,998 lb
Alfa Romeo4C1.7
895 kg
1,973 lb

Top speed without limiter comparison

Bar comparison chart for Top speed without limiter. Higher is better · km/h / mph

Chart data table
VehicleValue
PorscheCayman (981C)2.7
264 km/h
164 mph
Alfa Romeo4C1.7
258 km/h
160 mph

0-100 km/h comparison

Bar comparison chart for 0-100 km/h. Lower is better · seconds

Chart data table
VehicleValue
PorscheCayman (981C)2.75.6 s
Alfa Romeo4C1.74.5 s

Although Porsche Cayman (981C) 2.7 has more power, Alfa Romeo 4C 1.7 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Alfa Romeo 4C 1.7 and Porsche Cayman (981C) 2.7: 1.1 s.

Fuel consumption comparison

Bar comparison chart for Fuel consumption. Lower is better · L/100 km / mpg US / mpg UK

Chart data table
VehicleValue
PorscheCayman (981C)2.7
7.9 L/100 km
29.8 mpg US
35.8 mpg UK
Alfa Romeo4C1.7
6.8 L/100 km
34.6 mpg US
41.5 mpg UK

The biggest fuel consumption difference is between Alfa Romeo 4C 1.7 and Porsche Cayman (981C) 2.7: 1.1 L/100 km.

Power-to-weight comparison

Bar comparison chart for Power-to-weight. Higher is better · hp/t / kW/t

Chart data table
VehicleValue
PorscheCayman (981C)2.7
202 hp/t
151 kW/t
4.9 kg/hp
Alfa Romeo4C1.7
268 hp/t
200 kW/t
3.7 kg/hp

Estimated range comparison

Bar comparison chart for Estimated range. Higher is better · km / mi

Chart data table
VehicleValue
PorscheCayman (981C)2.7
810 km
503 mi
Alfa Romeo4C1.7
588 km
366 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
PorscheCayman (981C)2.7
275 hp
205 kW
5.6 s
264 km/h
164 mph
Alfa Romeo4C1.7
240 hp
179 kW
4.5 s
258 km/h
160 mph

Most attractive quadrant

Scatter chart with performance score on the X axis and practicality score on the Y axis.

Chart data table
VehiclePerformance scorePracticality score
PorscheCayman (981C)2.7
Power
275 hp
205 kW
0-100 km/h5.6 s
Top speed
264 km/h
164 mph
Doors/seats
2 doors
2 seats
Trunk
425 L
15.0 cu ft
Length
4,380 mm
172.4 in
Height
1,294 mm
50.9 in
Alfa Romeo4C1.7
Power
240 hp
179 kW
0-100 km/h4.5 s
Top speed
258 km/h
160 mph
Doors/seats
2 doors
2 seats
Trunk
110 L
3.9 cu ft
Length
3,989 mm
157.0 in
Height
1,183 mm
46.6 in

Performance vs fuel economy

Cars closer to the top-right corner combine stronger performance with better fuel economy scores.

Performance vs fuel economy data table
VehiclePerformance scoreFuel economy score
PorscheCayman (981C)2.7
Power
275 hp
205 kW
0-100 km/h5.6 s
Top speed
264 km/h
164 mph
7.9 L/100 km
29.8 mpg US
35.8 mpg UK
Alfa Romeo4C1.7
Power
240 hp
179 kW
0-100 km/h4.5 s
Top speed
258 km/h
160 mph
6.8 L/100 km
34.6 mpg US
41.5 mpg UK

Alfa Romeo 4C 1.7 is closest to the top-right balance target for performance and fuel economy.

Acceleration vs fuel consumption

Cars closer to the lower-left corner offer a better mix of quick acceleration and low fuel consumption.

Acceleration vs fuel consumption data table
VehicleFuel consumption, L/100 km0-100 km/h, s
PorscheCayman (981C)2.7
7.9 L/100 km
29.8 mpg US
35.8 mpg UK
5.6 s
Alfa Romeo4C1.7
6.8 L/100 km
34.6 mpg US
41.5 mpg UK
4.5 s

Power-to-weight vs fuel consumption

The shaded area favors higher power-to-weight with lower combined fuel consumption.

Power-to-weight vs fuel consumption data table
VehiclePower-to-weight, hp/tFuel consumption, L/100 km
PorscheCayman (981C)2.7
202 hp/t
151 kW/t
4.9 kg/hp
7.9 L/100 km
29.8 mpg US
35.8 mpg UK
Alfa Romeo4C1.7
268 hp/t
200 kW/t
3.7 kg/hp
6.8 L/100 km
34.6 mpg US
41.5 mpg UK

Detailed score breakdown

Detailed score breakdown
VehiclePorscheCayman (981C)2.7Alfa Romeo4C1.7
Power
275 hp
205 kW
240 hp
179 kW
Torque
290 Nm
214 lb-ft
350 Nm
258 lb-ft
Acceleration
5.6 s
4.5 s
Top speed
264 km/h
164 mph
258 km/h
160 mph
Lightness
1,360 kg
2,998 lb
895 kg
1,973 lb
Fuel consumption
7.9 L/100 km
29.8 mpg US
35.8 mpg UK
6.8 L/100 km
34.6 mpg US
41.5 mpg UK
Practicality
Doors/seats
2 doors
2 seats
Trunk
425 L
15.0 cu ft
Length
4,380 mm
172.4 in
Height
1,294 mm
50.9 in
Doors/seats
2 doors
2 seats
Trunk
110 L
3.9 cu ft
Length
3,989 mm
157.0 in
Height
1,183 mm
46.6 in
Range score
810 km
503 mi
588 km
366 mi
CO2 score
183 g/km
157 g/km
Trunk score
425 L
15.0 cu ft
110 L
3.9 cu ft
Power-to-weight score
202 hp/t
151 kW/t
4.9 kg/hp
268 hp/t
200 kW/t
3.7 kg/hp
Overall
Fixed score
Fixed score

Fuel cost and annual usage

Estimate running costs from combined consumption, your annual distance, and the fuel price in your local currency.

Enter the fuel price in your local currency, for example €/L, $/gal, £/L or any other local currency.

LC = Local Currency

Fuel cost and annual usage
VehiclePorsche Cayman (981C) 2.7Alfa Romeo 4C 1.7
Consumption7.9 L/100 km29.8 mpg US35.8 mpg UK6.8 L/100 km34.6 mpg US41.5 mpg UK
Cost / 100 km13.83 LC100 km11.90 LC100 km
Cost / 100 mi22.25 LC100 mi19.15 LC100 mi
Annual fuel used1,185 L313 US gal261 UK gal1,020 L269 US gal224 UK gal
Annual fuel cost2,074 LC/year1,785 LC/year

Head-to-head comparisons

Porsche Cayman (981C) 2.7

  • Has 35 hp more
  • Has 6 km/h (4 mph) higher top speed
  • Has 222 km (138 mi) more estimated range
  • Has 315 L more trunk volume

Pros

  • Highest top speed
  • Most powerful
  • Best estimated range
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Highest combined fuel consumption
  • Heaviest
  • Highest CO2 emissions

Alfa Romeo 4C 1.7

  • Has 60 Nm more
  • Is 465 kg lighter
  • Is 1.1 s quicker from 0-100 km/h
  • Uses 1.1 L/100 km less fuel
  • Has 66 hp/t better power-to-weight
  • Emits 26 g/km less CO2

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest torque
  • Lightest
  • Lowest combined fuel consumption
  • Best power-to-weight ratio

Cons

  • Lowest power
  • Lowest top speed
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche Cayman (981C) 2.7
Alfa Romeo 4C 1.7
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