Car comparison

Porsche 718 Boxster (982) S 2.5vsBMW 4 Series Convertible (G23) M440i

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 / convertible2020-present
VS

BMW 4 Series Convertible (G23)

M440i

374 hp2998 ccGasolineAWDAutomaticTurbochargedCabriolet / convertible2020-2024

Comparison overview

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

Best choices

BMW 4 Series Convertible (G23) M440i

  • Most powerful
    374 hp
    279 kW
  • 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
    9.3 L/100 km
    25.3 mpg US
    30.4 mpg UK
  • Lowest highway consumption
    6.2 L/100 km
    37.9 mpg US
    45.6 mpg UK
  • Best estimated range
    797 km
    495 mi
  • Largest trunk
    300 L
  • Best overall score
    63/100
  • Best economy score
    87/100
  • Best practicality score
    45/100

Porsche 718 Boxster (982) S 2.5

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

Specification comparison

Specification comparison
ModelPorsche718 Boxster (982)S 2.5BMW4 Series Convertible (G23)M440i
Power
350hp261kW
374hp279kW
Torque
420Nm310lb-ft
500Nm369lb-ft
Curb weight
1,385kg3,053lb
1,890kg4,167lb
Gross weight
1,695kg3,737lb
2,390kg5,269lb
Top speed
285 km/h
177 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
73.7s99% target: 282 km/h / 175 mph
Calculated
65.8s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
4.4s
4.9s
0-200 km/h
15.0s
17.6s
Calculated
0-60 mph
4.2s
Calculated
4.7s
Calculated
Fuel consumption
8.8L/100 km26.7mpg US32.1mpg UK
7.4L/100 km31.8mpg US38.2mpg UK
Fuel consumption city
12.4L/100 km19mpg US22.8mpg UK
9.3L/100 km25.3mpg US30.4mpg UK
Fuel consumption highway
7L/100 km33.6mpg US40.4mpg UK
6.2L/100 km37.9mpg US45.6mpg UK
Quarter mile
12.5s
Calculated
13.0s
Calculated
Power-to-weight
253hp/t188kW/t115hp/1000 lb
Calculated
198hp/t148kW/t90hp/1000 lb
Calculated
Torque-to-weight
303Nm/t203lb-ft/ton
Calculated
265Nm/t177lb-ft/ton
Calculated
Estimated range
727km452mi
Calculated
797km495mi
Calculated
Displacement
2,497cc152cu in
2,998cc183cu in
Length
4,379mm172in
4,770mm188in
Width
1,801mm71in
1,852mm73in
Height
1,280mm50in
1,394mm55in
Wheelbase
2,475mm97in
2,851mm112in
Front track
1,515mm60in
1,575mm62in
Rear track
1,540mm61in
1,611mm63in
Ground clearance-
126mm5in
Trunk volume
125L
300L
Max trunk volume-
385L
Doors
2
2
Seats
2
4
Fuel tank
64L
59L
CO2 emissions
200g/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 4 Series Convertible (G23) M440iPowerTorque
  • Porsche 718 Boxster (982) S 2.5: Power / Torque
  • BMW 4 Series Convertible (G23) M440i: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Porsche718 Boxster (982)S 2.56,500 rpm2,100-4,500 rpm7,500 rpm
BMW4 Series Convertible (G23)M440i5,500-6,500 rpm1,900-5,000 rpm6,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricPorsche718 Boxster (982)S 2.5BMW4 Series Convertible (G23)M440i
Acceleration checkpoints
0-60 mph
0-97 km/h
4.2 s
4.7 s
0-100 km/h
0-62 mph
4.4 s
4.9 s
0-200 km/h
0-124 mph
15.0 s
17.6 s
Top speed
285 km/h
177 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Limited
Drag race simulation
60 ft
18 m
2.0 s
2.1 s
330 ft
101 m
5.4 s
5.7 s
1/8 mile
201 m
8.1 s
8.5 s
1000 ft
305 m
10.5 s
11.0 s
1/4 mile
402 m
12.5 s
13.0 s
Trap speed
1/4 mile
402 m
184 km/h
114 mph
176 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
BMW4 Series Convertible (G23)M440i
374 hp
279 kW

BMW 4 Series Convertible (G23) M440i has 24 hp more than Porsche 718 Boxster (982) S 2.5.

The biggest power difference is between Porsche 718 Boxster (982) S 2.5 and BMW 4 Series Convertible (G23) M440i: 24 hp (18 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
BMW4 Series Convertible (G23)M440i
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
BMW4 Series Convertible (G23)M440i
1,890 kg
4,167 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
BMW4 Series Convertible (G23)M440i
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
BMW4 Series Convertible (G23)M440i4.9 s

Although BMW 4 Series Convertible (G23) M440i has more power, Porsche 718 Boxster (982) S 2.5 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Porsche 718 Boxster (982) S 2.5 and BMW 4 Series Convertible (G23) M440i: 0.5 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
8.8 L/100 km
26.7 mpg US
32.1 mpg UK
BMW4 Series Convertible (G23)M440i
7.4 L/100 km
31.8 mpg US
38.2 mpg UK

The biggest fuel consumption difference is between BMW 4 Series Convertible (G23) M440i and Porsche 718 Boxster (982) S 2.5: 1.4 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
BMW4 Series Convertible (G23)M440i
198 hp/t
148 kW/t
5.1 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
727 km
452 mi
BMW4 Series Convertible (G23)M440i
797 km
495 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
BMW4 Series Convertible (G23)M440i
374 hp
279 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/h4.4 s
Top speed
285 km/h
177 mph
Doors/seats
2 doors
2 seats
Trunk
125 L
4.4 cu ft
Length
4,379 mm
172.4 in
Height
1,280 mm
50.4 in
BMW4 Series Convertible (G23)M440i
Power
374 hp
279 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
300 L
10.6 cu ft
Length
4,770 mm
187.8 in
Height
1,394 mm
54.9 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
8.8 L/100 km
26.7 mpg US
32.1 mpg UK
BMW4 Series Convertible (G23)M440i
Power
374 hp
279 kW
0-100 km/h4.9 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
8.8 L/100 km
26.7 mpg US
32.1 mpg UK
4.4 s
BMW4 Series Convertible (G23)M440i
7.4 L/100 km
31.8 mpg US
38.2 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
253 hp/t
188 kW/t
4.0 kg/hp
8.8 L/100 km
26.7 mpg US
32.1 mpg UK
BMW4 Series Convertible (G23)M440i
198 hp/t
148 kW/t
5.1 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 2.5BMW4 Series Convertible (G23)M440i
Power
350 hp
261 kW
374 hp
279 kW
Torque
420 Nm
310 lb-ft
500 Nm
369 lb-ft
Acceleration
4.4 s
4.9 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
1,890 kg
4,167 lb
Fuel consumption
8.8 L/100 km
26.7 mpg US
32.1 mpg UK
7.4 L/100 km
31.8 mpg US
38.2 mpg UK
Practicality
Doors/seats
2 doors
2 seats
Trunk
125 L
4.4 cu ft
Length
4,379 mm
172.4 in
Height
1,280 mm
50.4 in
Doors/seats
2 doors
4 seats
Trunk
300 L
10.6 cu ft
Length
4,770 mm
187.8 in
Height
1,394 mm
54.9 in
Range score
727 km
452 mi
797 km
495 mi
CO2 score
200 g/km
-
Trunk score
125 L
4.4 cu ft
300 L
10.6 cu ft
Power-to-weight score
253 hp/t
188 kW/t
4.0 kg/hp
198 hp/t
148 kW/t
5.1 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 4 Series Convertible (G23) M440i
Consumption8.8 L/100 km26.7 mpg US32.1 mpg UK7.4 L/100 km31.8 mpg US38.2 mpg UK
Cost / 100 km15.40 LC100 km12.95 LC100 km
Cost / 100 mi24.78 LC100 mi20.84 LC100 mi
Annual fuel used1,320 L349 US gal290 UK gal1,110 L293 US gal244 UK gal
Annual fuel cost2,310 LC/year1,943 LC/year

Head-to-head comparisons

Porsche 718 Boxster (982) S 2.5

  • Is 505 kg lighter
  • Is 0.5 s quicker from 0-100 km/h
  • Has 25 km/h (16 mph) higher top speed
  • Has 55 hp/t better power-to-weight

Pros

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

Cons

  • Lowest power
  • Highest combined fuel consumption
  • Smallest trunk

BMW 4 Series Convertible (G23) M440i

  • Has 24 hp more
  • Has 80 Nm more
  • Uses 1.4 L/100 km less fuel
  • Has 70 km (44 mi) more estimated range
  • Has 175 L more trunk volume

Pros

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

Cons

  • Slowest 0-100 km/h
  • Heaviest
  • Lowest top speed

Choose cars to compare

Brand
Model
Generation
Engine or modification
Porsche 718 Boxster (982) S 2.5
BMW 4 Series Convertible (G23) M440i
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