Car comparison

Porsche 718 Boxster (982) S 2.5vsBMW 2 Series Convertible (F23) M240i

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

New comparison

Porsche 718 Boxster (982)

S 2.5

350 hp2497 ccGasolineRWDManualTurbochargedCabriolet / convertible2018-2020
VS

BMW 2 Series Convertible (F23)

M240i

340 hp2998 ccGasolineRWDManualTurbochargedCabriolet / convertible2016-2017

Comparison overview

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

Best choices

BMW 2 Series Convertible (F23) M240i

  • Highest torque
    500 Nm
    369 lb-ft
  • Lowest combined fuel consumption
    8.3 L/100 km
    28.3 mpg US
    34.0 mpg UK
  • Lowest city consumption
    11.2 L/100 km
    21.0 mpg US
    25.2 mpg UK
  • Lowest highway consumption
    6.6 L/100 km
    35.6 mpg US
    42.8 mpg UK
  • Lowest CO2 emissions
    189 g/km
  • Best estimated range
    627 km
    389 mi
  • Largest trunk
    280 L
  • Best overall score
    62/100
  • Best economy score
    85/100
  • Best practicality score
    44/100

Porsche 718 Boxster (982) S 2.5

  • Quickest 0-100 km/h
    4.9 s
  • Fastest top speed
    285 km/h
    177 mph
  • Most powerful
    350 hp
    261 kW
  • Lightest
    1,355 kg
    2,987 lb
  • Best power-to-weight
    258 hp/t
    193 kW/t
    3.9 kg/hp
  • Best performance score
    73/100

Specification comparison

Specification comparison
ModelPorsche718 Boxster (982)S 2.5BMW2 Series Convertible (F23)M240i
Power
350hp261kW
340hp254kW
Torque
420Nm310lb-ft
500Nm369lb-ft
Curb weight
1,355kg2,987lb
1,615kg3,560lb
Gross weight
1,665kg3,671lb
2,045kg4,508lb
Top speed
285 km/h
177 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
65.6s99% target: 282 km/h / 175 mph
Calculated
69.3s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
4.9s
4.9s
0-200 km/h
15.2s
Calculated
18.0s
Calculated
0-60 mph
4.7s
Calculated
4.7s
Calculated
Fuel consumption
9.2L/100 km25.6mpg US30.7mpg UK
8.3L/100 km28.3mpg US34.0mpg UK
Fuel consumption city
12.7L/100 km18.5mpg US22.2mpg UK
11.2L/100 km21mpg US25.2mpg UK
Fuel consumption highway
7.1L/100 km33.1mpg US39.8mpg UK
6.6L/100 km35.6mpg US42.8mpg UK
Quarter mile
12.9s
Calculated
13.1s
Calculated
Power-to-weight
258hp/t193kW/t117hp/1000 lb
Calculated
211hp/t157kW/t95hp/1000 lb
Calculated
Torque-to-weight
310Nm/t207lb-ft/ton
Calculated
310Nm/t207lb-ft/ton
Calculated
Estimated range
587km365mi
Calculated
627km389mi
Calculated
Displacement
2,497cc152cu in
2,998cc183cu in
Length
4,379mm172in
4,454mm175in
Width
1,801mm71in
1,774mm70in
Height
1,280mm50in
1,403mm55in
Wheelbase
2,475mm97in
2,690mm106in
Front track
1,515mm60in
1,516mm60in
Rear track
1,539mm61in
1,534mm60in
Ground clearance-
130mm5in
Trunk volume-
280L
Max trunk volume
150L
335L
Doors
2
2
Seats
2
4
Fuel tank
54L
52L
CO2 emissions
210g/km
189g/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 718 Boxster (982) S 2.5BMW 2 Series Convertible (F23) M240iPowerTorque
  • Porsche 718 Boxster (982) S 2.5: Power / Torque
  • BMW 2 Series Convertible (F23) M240i: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Porsche718 Boxster (982)S 2.56,500 rpm2,100-4,500 rpm6,750 rpm
BMW2 Series Convertible (F23)M240i5,500 rpm1,520-4,500 rpm5,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorsche718 Boxster (982)S 2.5BMW2 Series Convertible (F23)M240i
Acceleration checkpoints
0-60 mph
0-97 km/h
4.7 s
4.7 s
0-100 km/h
0-62 mph
4.9 s
4.9 s
0-200 km/h
0-124 mph
15.2 s
18.0 s
Top speed
285 km/h
177 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
2.2 s
2.1 s
330 ft
101 m
5.7 s
5.6 s
1/8 mile
201 m
8.5 s
8.5 s
1000 ft
305 m
10.9 s
11.0 s
1/4 mile
402 m
12.9 s
13.1 s
Trap speed
1/4 mile
402 m
185 km/h
115 mph
175 km/h
109 mph

Power comparison

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

Chart data table
VehicleValue
Porsche718 Boxster (982)S 2.5
350 hp
261 kW
BMW2 Series Convertible (F23)M240i
340 hp
254 kW

Porsche 718 Boxster (982) S 2.5 has 10 hp more than BMW 2 Series Convertible (F23) M240i.

The biggest power difference is between BMW 2 Series Convertible (F23) M240i and Porsche 718 Boxster (982) S 2.5: 10 hp (7 kW).

Torque comparison

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

Chart data table
VehicleValue
Porsche718 Boxster (982)S 2.5
420 Nm
310 lb-ft
BMW2 Series Convertible (F23)M240i
500 Nm
369 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
Porsche718 Boxster (982)S 2.5
1,355 kg
2,987 lb
BMW2 Series Convertible (F23)M240i
1,615 kg
3,560 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
Porsche718 Boxster (982)S 2.5
285 km/h
177 mph
BMW2 Series Convertible (F23)M240i
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph

0-100 km/h comparison

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

Chart data table
VehicleValue
Porsche718 Boxster (982)S 2.54.9 s
BMW2 Series Convertible (F23)M240i4.9 s

Fuel consumption comparison

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

Chart data table
VehicleValue
Porsche718 Boxster (982)S 2.5
9.2 L/100 km
25.6 mpg US
30.7 mpg UK
BMW2 Series Convertible (F23)M240i
8.3 L/100 km
28.3 mpg US
34.0 mpg UK

The biggest fuel consumption difference is between BMW 2 Series Convertible (F23) M240i and Porsche 718 Boxster (982) S 2.5: 0.9 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
Porsche718 Boxster (982)S 2.5
258 hp/t
193 kW/t
3.9 kg/hp
BMW2 Series Convertible (F23)M240i
211 hp/t
157 kW/t
4.7 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
Porsche718 Boxster (982)S 2.5
587 km
365 mi
BMW2 Series Convertible (F23)M240i
627 km
389 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Porsche718 Boxster (982)S 2.5
350 hp
261 kW
4.9 s
285 km/h
177 mph
BMW2 Series Convertible (F23)M240i
340 hp
254 kW
4.9 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 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
Porsche718 Boxster (982)S 2.5
Power
350 hp
261 kW
0-100 km/h4.9 s
Top speed
285 km/h
177 mph
Doors/seats
2 doors
2 seats
Trunk
150 L
5.3 cu ft
Length
4,379 mm
172.4 in
Height
1,280 mm
50.4 in
BMW2 Series Convertible (F23)M240i
Power
340 hp
254 kW
0-100 km/h4.9 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
4 seats
Trunk
280 L
9.9 cu ft
Length
4,454 mm
175.4 in
Height
1,403 mm
55.2 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
Porsche718 Boxster (982)S 2.5
Power
350 hp
261 kW
0-100 km/h4.9 s
Top speed
285 km/h
177 mph
9.2 L/100 km
25.6 mpg US
30.7 mpg UK
BMW2 Series Convertible (F23)M240i
Power
340 hp
254 kW
0-100 km/h4.9 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
8.3 L/100 km
28.3 mpg US
34.0 mpg UK

Porsche 718 Boxster (982) S 2.5 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
Porsche718 Boxster (982)S 2.5
9.2 L/100 km
25.6 mpg US
30.7 mpg UK
4.9 s
BMW2 Series Convertible (F23)M240i
8.3 L/100 km
28.3 mpg US
34.0 mpg UK
4.9 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
Porsche718 Boxster (982)S 2.5
258 hp/t
193 kW/t
3.9 kg/hp
9.2 L/100 km
25.6 mpg US
30.7 mpg UK
BMW2 Series Convertible (F23)M240i
211 hp/t
157 kW/t
4.8 kg/hp
8.3 L/100 km
28.3 mpg US
34.0 mpg UK

Detailed score breakdown

Detailed score breakdown
VehiclePorsche718 Boxster (982)S 2.5BMW2 Series Convertible (F23)M240i
Power
350 hp
261 kW
340 hp
254 kW
Torque
420 Nm
310 lb-ft
500 Nm
369 lb-ft
Acceleration
4.9 s
4.9 s
Top speed
285 km/h
177 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
1,355 kg
2,987 lb
1,615 kg
3,560 lb
Fuel consumption
9.2 L/100 km
25.6 mpg US
30.7 mpg UK
8.3 L/100 km
28.3 mpg US
34.0 mpg UK
Practicality
Doors/seats
2 doors
2 seats
Trunk
150 L
5.3 cu ft
Length
4,379 mm
172.4 in
Height
1,280 mm
50.4 in
Doors/seats
2 doors
4 seats
Trunk
280 L
9.9 cu ft
Length
4,454 mm
175.4 in
Height
1,403 mm
55.2 in
Range score
587 km
365 mi
627 km
389 mi
CO2 score
210 g/km
189 g/km
Trunk score
150 L
5.3 cu ft
280 L
9.9 cu ft
Power-to-weight score
258 hp/t
193 kW/t
3.9 kg/hp
211 hp/t
157 kW/t
4.8 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 718 Boxster (982) S 2.5BMW 2 Series Convertible (F23) M240i
Consumption9.2 L/100 km25.6 mpg US30.7 mpg UK8.3 L/100 km28.3 mpg US34 mpg UK
Cost / 100 km16.10 LC100 km14.53 LC100 km
Cost / 100 mi25.91 LC100 mi23.38 LC100 mi
Annual fuel used1,380 L365 US gal304 UK gal1,245 L329 US gal274 UK gal
Annual fuel cost2,415 LC/year2,179 LC/year

Head-to-head comparisons

Porsche 718 Boxster (982) S 2.5

  • Has 10 hp more
  • Is 260 kg lighter
  • Has 25 km/h (16 mph) higher top speed
  • Has 48 hp/t better power-to-weight

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Lightest
  • Best power-to-weight ratio

Cons

  • Highest combined fuel consumption
  • Smallest trunk
  • Highest CO2 emissions

BMW 2 Series Convertible (F23) M240i

  • Has 80 Nm more
  • Uses 0.9 L/100 km less fuel
  • Has 40 km (25 mi) more estimated range
  • Has 130 L more trunk volume
  • Emits 21 g/km less CO2

Pros

  • Highest torque
  • Lowest combined fuel consumption
  • Best estimated range
  • Largest trunk

Cons

  • Lowest power
  • Heaviest
  • Lowest top speed

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche 718 Boxster (982) S 2.5
BMW 2 Series Convertible (F23) M240i
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