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 ccGasolineRWDDual-clutchTurbochargedCabriolet / convertible2018-2020
VS

BMW 2 Series Convertible (F23)

M240i

340 hp2998 ccGasolineRWDAutomaticTurbochargedCabriolet / 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
    7.4 L/100 km
    31.8 mpg US
    38.2 mpg UK
  • Lowest city consumption
    9.8 L/100 km
    24.0 mpg US
    28.8 mpg UK
  • Lowest highway consumption
    6.0 L/100 km
    39.2 mpg US
    47.1 mpg UK
  • Lowest CO2 emissions
    169 g/km
  • Best estimated range
    703 km
    437 mi
  • Largest trunk
    280 L
  • Best economy score
    87/100
  • Best practicality score
    44/100

Porsche 718 Boxster (982) S 2.5

  • Quickest 0-100 km/h
    4.4 s
  • Fastest top speed
    285 km/h
    177 mph
  • Most powerful
    350 hp
    261 kW
  • Lightest
    1,385 kg
    3,053 lb
  • Best power-to-weight
    253 hp/t
    188 kW/t
    4.0 kg/hp
  • Best overall score
    62/100
  • Best performance score
    75/100

Specification comparison

Specification comparison
ModelPorsche718 Boxster (982)S 2.5BMW2 Series Convertible (F23)M240i
Power
350hp261kW
340hp254kW
Torque
420Nm310lb-ft
500Nm369lb-ft
Curb weight
1,385kg3,053lb
1,630kg3,594lb
Gross weight
1,695kg3,737lb
2,060kg4,542lb
Top speed
285 km/h
177 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
59.5s99% target: 282 km/h / 175 mph
Calculated
66.6s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
4.4s
4.7s
0-200 km/h
13.7s
Calculated
17.3s
Calculated
0-60 mph
4.2s
Calculated
4.5s
Calculated
Fuel consumption
8.5L/100 km27.7mpg US33.2mpg UK
7.4L/100 km31.8mpg US38.2mpg UK
Fuel consumption city
11.8L/100 km19.9mpg US23.9mpg UK
9.8L/100 km24mpg US28.8mpg UK
Fuel consumption highway
6.5L/100 km36.2mpg US43.5mpg UK
6L/100 km39.2mpg US47.1mpg UK
Quarter mile
12.4s
Calculated
12.9s
Calculated
Power-to-weight
253hp/t188kW/t115hp/1000 lb
Calculated
209hp/t156kW/t95hp/1000 lb
Calculated
Torque-to-weight
303Nm/t203lb-ft/ton
Calculated
307Nm/t205lb-ft/ton
Calculated
Estimated range
635km395mi
Calculated
703km437mi
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
194g/km
169g/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
4.2 s
4.5 s
0-100 km/h
0-62 mph
4.4 s
4.7 s
0-200 km/h
0-124 mph
13.7 s
17.3 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
2.1 s
2.1 s
330 ft
101 m
5.5 s
5.5 s
1/8 mile
201 m
8.1 s
8.4 s
1000 ft
305 m
10.4 s
10.8 s
1/4 mile
402 m
12.4 s
12.9 s
Trap speed
1/4 mile
402 m
191 km/h
118 mph
177 km/h
110 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
1,385 kg
3,053 lb
BMW2 Series Convertible (F23)M240i
1,630 kg
3,594 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 2.54.4 s
BMW2 Series Convertible (F23)M240i4.7 s

The biggest 0-100 km/h difference is between Porsche 718 Boxster (982) S 2.5 and BMW 2 Series Convertible (F23) M240i: 0.3 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
8.5 L/100 km
27.7 mpg US
33.2 mpg UK
BMW2 Series Convertible (F23)M240i
7.4 L/100 km
31.8 mpg US
38.2 mpg UK

The biggest fuel consumption difference is between BMW 2 Series Convertible (F23) M240i and Porsche 718 Boxster (982) S 2.5: 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
Porsche718 Boxster (982)S 2.5
253 hp/t
188 kW/t
4.0 kg/hp
BMW2 Series Convertible (F23)M240i
209 hp/t
156 kW/t
4.8 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
635 km
395 mi
BMW2 Series Convertible (F23)M240i
703 km
437 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
4.4 s
285 km/h
177 mph
BMW2 Series Convertible (F23)M240i
340 hp
254 kW
4.7 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/h4.4 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/h4.7 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/h4.4 s
Top speed
285 km/h
177 mph
8.5 L/100 km
27.7 mpg US
33.2 mpg UK
BMW2 Series Convertible (F23)M240i
Power
340 hp
254 kW
0-100 km/h4.7 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
7.4 L/100 km
31.8 mpg US
38.2 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
8.5 L/100 km
27.7 mpg US
33.2 mpg UK
4.4 s
BMW2 Series Convertible (F23)M240i
7.4 L/100 km
31.8 mpg US
38.2 mpg UK
4.7 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
253 hp/t
188 kW/t
4.0 kg/hp
8.5 L/100 km
27.7 mpg US
33.2 mpg UK
BMW2 Series Convertible (F23)M240i
209 hp/t
156 kW/t
4.8 kg/hp
7.4 L/100 km
31.8 mpg US
38.2 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
4.4 s
4.7 s
Top speed
285 km/h
177 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
1,385 kg
3,053 lb
1,630 kg
3,594 lb
Fuel consumption
8.5 L/100 km
27.7 mpg US
33.2 mpg UK
7.4 L/100 km
31.8 mpg US
38.2 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
635 km
395 mi
703 km
437 mi
CO2 score
194 g/km
169 g/km
Trunk score
150 L
5.3 cu ft
280 L
9.9 cu ft
Power-to-weight score
253 hp/t
188 kW/t
4.0 kg/hp
209 hp/t
156 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
Consumption8.5 L/100 km27.7 mpg US33.2 mpg UK7.4 L/100 km31.8 mpg US38.2 mpg UK
Cost / 100 km14.88 LC100 km12.95 LC100 km
Cost / 100 mi23.94 LC100 mi20.84 LC100 mi
Annual fuel used1,275 L337 US gal280 UK gal1,110 L293 US gal244 UK gal
Annual fuel cost2,231 LC/year1,943 LC/year

Head-to-head comparisons

Porsche 718 Boxster (982) S 2.5

  • Has 10 hp more
  • Is 245 kg lighter
  • Is 0.3 s quicker from 0-100 km/h
  • Has 25 km/h (16 mph) higher top speed
  • Has 44 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 1.1 L/100 km less fuel
  • Has 67 km (42 mi) more estimated range
  • Has 130 L more trunk volume
  • Emits 25 g/km less CO2

Pros

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

Cons

  • Slowest 0-100 km/h
  • 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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