Car comparison

Infiniti Q50 · Facelift 2017 3.5vsSubaru WRX STI · Facelift 2018 2.5

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

New comparison

Infiniti Q50 · Facelift 2017

3.5

306 hp3498 ccGasolineRWDAutomaticSedan2017-present
VS

Subaru WRX STI · Facelift 2018

2.5

300 hp2457 ccGasolineAWDManualTurbochargedSedan2018-present

Comparison overview

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

Best choices

Infiniti Q50 Facelift 2017 3.5

  • Quickest 0-100 km/h
    5.1 s
  • Fastest top speed
    265 km/h
    165 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    306 hp
    228 kW
  • Lowest combined fuel consumption
    6.2 L/100 km
    37.9 mpg US
    45.6 mpg UK
  • Lowest city consumption
    8.2 L/100 km
    28.7 mpg US
    34.4 mpg UK
  • Lowest highway consumption
    5.1 L/100 km
    46.1 mpg US
    55.4 mpg UK
  • Lowest CO2 emissions
    144 g/km
  • Best estimated range
    1,129 km
    702 mi
  • Best economy score
    90/100

Subaru WRX STI Facelift 2018 2.5

  • Highest torque
    407 Nm
    300 lb-ft
  • Lightest
    1,566 kg
    3,452 lb
  • Best power-to-weight
    192 hp/t
    143 kW/t
    5.2 kg/hp
  • Largest trunk
    460 L
  • Best overall score
    69/100
  • Best performance score
    67/100
  • Best practicality score
    74/100

Specification comparison

Specification comparison
ModelInfinitiQ50Facelift 20173.5SubaruWRX STIFacelift 20182.5
Power
306hp228kW
300hp224kW
Torque
350Nm258lb-ft
407Nm300lb-ft
Curb weight
1,787kg3,940lb
1,566kg3,452lb
Gross weight-
2,000kg4,409lb
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
255 km/h
158 mph
To 99% top speed
51.2s99% target: 262 km/h / 163 mph
Calculated
48.2s99% target: 252 km/h / 157 mph
Calculated
0-100 km/h
5.1s
5.2s
0-200 km/h
15.4s
Calculated
16.0s
Calculated
0-60 mph
4.9s
Calculated
5.0s
Calculated
Fuel consumption
6.2L/100 km37.9mpg US45.6mpg UK
11.2L/100 km21mpg US25.2mpg UK
Fuel consumption city
8.2L/100 km28.7mpg US34.4mpg UK
15.4L/100 km15.3mpg US18.3mpg UK
Fuel consumption highway
5.1L/100 km46.1mpg US55.4mpg UK
8.7L/100 km27mpg US32.5mpg UK
Quarter mile
13.0s
Calculated
13.2s
Calculated
Power-to-weight
171hp/t128kW/t78hp/1000 lb
Calculated
192hp/t143kW/t87hp/1000 lb
Calculated
Torque-to-weight
196Nm/t131lb-ft/ton
Calculated
260Nm/t174lb-ft/ton
Calculated
Estimated range
1,129km702mi
Calculated
536km333mi
Calculated
Displacement
3,498cc213cu in
2,457cc150cu in
Length
4,810mm189in
4,595mm181in
Width
1,820mm72in
1,795mm71in
Height
1,430mm56in
1,475mm58in
Wheelbase
2,850mm112in
2,650mm104in
Front track-
1,530mm60in
Rear track-
1,540mm61in
Ground clearance-
135mm5in
Trunk volume
400L
460L
Doors
4
4
Seats
5
5
Fuel tank
70L
60L
CO2 emissions
144g/km
259g/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.

Infiniti Q50 Facelift 2017 3.5Subaru WRX STI Facelift 2018 2.5PowerTorque
  • Infiniti Q50 Facelift 2017 3.5: Power / Torque
  • Subaru WRX STI Facelift 2018 2.5: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
InfinitiQ50Facelift 20173.56,800 rpm5,000 rpm7,050 rpm
SubaruWRX STIFacelift 20182.56,000 rpm4,000 rpm6,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricInfinitiQ50Facelift 20173.5SubaruWRX STIFacelift 20182.5
Acceleration checkpoints
0-60 mph
0-97 km/h
4.9 s
5.0 s
0-100 km/h
0-62 mph
5.1 s
5.2 s
0-200 km/h
0-124 mph
15.4 s
16.0 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
255 km/h
158 mph
Drag race simulation
60 ft
18 m
2.4 s
2.4 s
330 ft
101 m
5.9 s
6.0 s
1/8 mile
201 m
8.7 s
8.8 s
1000 ft
305 m
11.1 s
11.2 s
1/4 mile
402 m
13.0 s
13.2 s
Trap speed
1/4 mile
402 m
185 km/h
115 mph
183 km/h
113 mph

Power comparison

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

Chart data table
VehicleValue
InfinitiQ50Facelift 20173.5
306 hp
228 kW
SubaruWRX STIFacelift 20182.5
300 hp
224 kW

Infiniti Q50 Facelift 2017 3.5 has 6 hp more than Subaru WRX STI Facelift 2018 2.5.

The biggest power difference is between Subaru WRX STI Facelift 2018 2.5 and Infiniti Q50 Facelift 2017 3.5: 6 hp (4 kW).

Torque comparison

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

Chart data table
VehicleValue
InfinitiQ50Facelift 20173.5
350 Nm
258 lb-ft
SubaruWRX STIFacelift 20182.5
407 Nm
300 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
InfinitiQ50Facelift 20173.5
1,787 kg
3,940 lb
SubaruWRX STIFacelift 20182.5
1,566 kg
3,452 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
InfinitiQ50Facelift 20173.5
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
SubaruWRX STIFacelift 20182.5
255 km/h
158 mph

0-100 km/h comparison

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

Chart data table
VehicleValue
InfinitiQ50Facelift 20173.55.1 s
SubaruWRX STIFacelift 20182.55.2 s

The biggest 0-100 km/h difference is between Infiniti Q50 Facelift 2017 3.5 and Subaru WRX STI Facelift 2018 2.5: 0.1 s.

Fuel consumption comparison

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

Chart data table
VehicleValue
InfinitiQ50Facelift 20173.5
6.2 L/100 km
37.9 mpg US
45.6 mpg UK
SubaruWRX STIFacelift 20182.5
11.2 L/100 km
21.0 mpg US
25.2 mpg UK

The biggest fuel consumption difference is between Infiniti Q50 Facelift 2017 3.5 and Subaru WRX STI Facelift 2018 2.5: 5.0 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
InfinitiQ50Facelift 20173.5
171 hp/t
128 kW/t
5.8 kg/hp
SubaruWRX STIFacelift 20182.5
192 hp/t
143 kW/t
5.2 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
InfinitiQ50Facelift 20173.5
1,129 km
702 mi
SubaruWRX STIFacelift 20182.5
536 km
333 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
InfinitiQ50Facelift 20173.5
306 hp
228 kW
5.1 s
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
SubaruWRX STIFacelift 20182.5
300 hp
224 kW
5.2 s
255 km/h
158 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
InfinitiQ50Facelift 20173.5
Power
306 hp
228 kW
0-100 km/h5.1 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
4 doors
5 seats
Trunk
400 L
14.1 cu ft
Length
4,810 mm
189.4 in
Height
1,430 mm
56.3 in
SubaruWRX STIFacelift 20182.5
Power
300 hp
224 kW
0-100 km/h5.2 s
Top speed
255 km/h
158 mph
Doors/seats
4 doors
5 seats
Trunk
460 L
16.2 cu ft
Length
4,595 mm
180.9 in
Height
1,475 mm
58.1 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
InfinitiQ50Facelift 20173.5
Power
306 hp
228 kW
0-100 km/h5.1 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
6.2 L/100 km
37.9 mpg US
45.6 mpg UK
SubaruWRX STIFacelift 20182.5
Power
300 hp
224 kW
0-100 km/h5.2 s
Top speed
255 km/h
158 mph
11.2 L/100 km
21.0 mpg US
25.2 mpg UK

Infiniti Q50 Facelift 2017 3.5 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
InfinitiQ50Facelift 20173.5
6.2 L/100 km
37.9 mpg US
45.6 mpg UK
5.1 s
SubaruWRX STIFacelift 20182.5
11.2 L/100 km
21.0 mpg US
25.2 mpg UK
5.2 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
InfinitiQ50Facelift 20173.5
171 hp/t
128 kW/t
5.8 kg/hp
6.2 L/100 km
37.9 mpg US
45.6 mpg UK
SubaruWRX STIFacelift 20182.5
192 hp/t
143 kW/t
5.2 kg/hp
11.2 L/100 km
21.0 mpg US
25.2 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleInfinitiQ50Facelift 20173.5SubaruWRX STIFacelift 20182.5
Power
306 hp
228 kW
300 hp
224 kW
Torque
350 Nm
258 lb-ft
407 Nm
300 lb-ft
Acceleration
5.1 s
5.2 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
255 km/h
158 mph
Lightness
1,787 kg
3,940 lb
1,566 kg
3,452 lb
Fuel consumption
6.2 L/100 km
37.9 mpg US
45.6 mpg UK
11.2 L/100 km
21.0 mpg US
25.2 mpg UK
Practicality
Doors/seats
4 doors
5 seats
Trunk
400 L
14.1 cu ft
Length
4,810 mm
189.4 in
Height
1,430 mm
56.3 in
Doors/seats
4 doors
5 seats
Trunk
460 L
16.2 cu ft
Length
4,595 mm
180.9 in
Height
1,475 mm
58.1 in
Range score
1,129 km
702 mi
536 km
333 mi
CO2 score
144 g/km
259 g/km
Trunk score
400 L
14.1 cu ft
460 L
16.2 cu ft
Power-to-weight score
171 hp/t
128 kW/t
5.8 kg/hp
192 hp/t
143 kW/t
5.2 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
VehicleInfiniti Q50 Facelift 2017 3.5Subaru WRX STI Facelift 2018 2.5
Consumption6.2 L/100 km37.9 mpg US45.6 mpg UK11.2 L/100 km21 mpg US25.2 mpg UK
Cost / 100 km10.85 LC100 km19.60 LC100 km
Cost / 100 mi17.46 LC100 mi31.54 LC100 mi
Annual fuel used930 L246 US gal205 UK gal1,680 L444 US gal370 UK gal
Annual fuel cost1,628 LC/year2,940 LC/year

Head-to-head comparisons

Infiniti Q50 Facelift 2017 3.5

  • Has 6 hp more
  • Is 0.1 s quicker from 0-100 km/h
  • Has 10 km/h (6 mph) higher top speed
  • Uses 5.0 L/100 km less fuel
  • Has 593 km (369 mi) more estimated range
  • Emits 115 g/km less CO2

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Lowest combined fuel consumption
  • Best estimated range

Cons

  • Heaviest
  • Smallest trunk

Subaru WRX STI Facelift 2018 2.5

  • Has 57 Nm more
  • Is 221 kg lighter
  • Has 20 hp/t better power-to-weight
  • Has 60 L more trunk volume

Pros

  • Highest torque
  • Lightest
  • Best power-to-weight ratio
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Highest combined fuel consumption
  • Lowest top speed
  • Highest CO2 emissions

Choose cars to compare

Brand
Model
Generation
Engine or modification
Infiniti Q50 3.5
Subaru WRX STI 2.5
Compare selected cars
2 vehicles selected

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Infiniti Q50 · Facelift 2017 3.5 vs Subaru WRX STI · Facelift 2018 2.5 - car comparison - FastVsFaster