Car comparison

Infiniti FX II 50 V8vsMercedes-Benz M-class (W164) · Facelift 2008 ML 500 V8

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

New comparison

Infiniti FX II

50 V8

390 hp5026 ccGasolineAWDAutomaticNaturally aspiratedCrossover2008-2012
VS

Mercedes-Benz M-class (W164) · Facelift 2008

ML 500 V8

388 hp5461 ccGasolineAWDAutomaticNaturally aspiratedSUV2009-2011

Comparison overview

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

Best choices

Infiniti FX II 50 V8

  • Quickest 0-100 km/h
    5.8 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    390 hp
    291 kW
  • Lightest
    2,075 kg
    4,575 lb
  • Best power-to-weight
    188 hp/t
    140 kW/t
    5.3 kg/hp
  • Lowest combined fuel consumption
    13.1 L/100 km
    18.0 mpg US
    21.6 mpg UK
  • Lowest highway consumption
    9.8 L/100 km
    24.0 mpg US
    28.8 mpg UK
  • Best performance score
    68/100
  • Best economy score
    72/100

Specification comparison

Specification comparison
ModelInfinitiFX II50 V8Mercedes-BenzM-class (W164)Facelift 2008ML 500 V8
Power
390hp291kW
388hp289kW
Torque
500Nm369lb-ft
530Nm391lb-ft
Curb weight
2,075kg4,575lb
2,110kg4,652lb
Gross weight
2,615kg5,765lb
2,830kg6,239lb
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
92.5s99% target: 257 km/h / 160 mph
Calculated
87.4s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
5.8s
5.8s
0-200 km/h
22.6s
Calculated
22.0s
Calculated
0-60 mph
5.5s
Calculated
5.5s
Calculated
Fuel consumption
13.1L/100 km18mpg US21.6mpg UK
13.1L/100 km18mpg US21.6mpg UK
Fuel consumption city
18.9L/100 km12.4mpg US14.9mpg UK
18L/100 km13.1mpg US15.7mpg UK
Fuel consumption highway
9.8L/100 km24mpg US28.8mpg UK
10.2L/100 km23.1mpg US27.7mpg UK
Quarter mile
14.0s
Calculated
13.9s
Calculated
Power-to-weight
188hp/t140kW/t85hp/1000 lb
Calculated
184hp/t137kW/t83hp/1000 lb
Calculated
Torque-to-weight
241Nm/t161lb-ft/ton
Calculated
251Nm/t168lb-ft/ton
Calculated
Estimated range
687km427mi
Calculated
725km451mi
Calculated
Displacement
5,026cc307cu in
5,461cc333cu in
Length
4,860mm191in
4,781mm188in
Width
1,925mm76in
1,911mm75in
Height
1,680mm66in
1,815mm71in
Wheelbase
2,885mm114in
2,915mm115in
Front track
1,635mm64in
1,636mm64in
Rear track
1,640mm65in
1,639mm65in
Ground clearance
187mm7in
261mm10in
Trunk volume
702L
833L
Max trunk volume
1,756L
2,050L
Doors
5
5
Seats
5
5
Fuel tank
90L
95L

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 FX II 50 V8Mercedes-Benz M-class (W164) Facelift 2008 ML 500 V8PowerTorque
  • Infiniti FX II 50 V8: Power / Torque
  • Mercedes-Benz M-class (W164) Facelift 2008 ML 500 V8: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
InfinitiFX II50 V86,500 rpm4,400 rpm6,800 rpm
Mercedes-BenzM-class (W164)Facelift 2008ML 500 V86,000 rpm2,800-4,800 rpm6,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricInfinitiFX II50 V8Mercedes-BenzM-class (W164)Facelift 2008ML 500 V8
Acceleration checkpoints
0-60 mph
0-97 km/h
5.5 s
5.5 s
0-100 km/h
0-62 mph
5.8 s
5.8 s
0-200 km/h
0-124 mph
22.6 s
22.0 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Limited
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Limited
Drag race simulation
60 ft
18 m
2.2 s
2.2 s
330 ft
101 m
6.0 s
6.0 s
1/8 mile
201 m
9.1 s
9.1 s
1000 ft
305 m
11.7 s
11.7 s
1/4 mile
402 m
14.0 s
13.9 s
Trap speed
1/4 mile
402 m
164 km/h
102 mph
165 km/h
102 mph

Power comparison

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

Chart data table
VehicleValue
InfinitiFX II50 V8
390 hp
291 kW
Mercedes-BenzM-class (W164)Facelift 2008ML 500 V8
388 hp
289 kW

Infiniti FX II 50 V8 has 2 hp more than Mercedes-Benz M-class (W164) Facelift 2008 ML 500 V8.

The biggest power difference is between Mercedes-Benz M-class (W164) Facelift 2008 ML 500 V8 and Infiniti FX II 50 V8: 2 hp (1 kW).

Torque comparison

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

Chart data table
VehicleValue
InfinitiFX II50 V8
500 Nm
369 lb-ft
Mercedes-BenzM-class (W164)Facelift 2008ML 500 V8
530 Nm
391 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
InfinitiFX II50 V8
2,075 kg
4,575 lb
Mercedes-BenzM-class (W164)Facelift 2008ML 500 V8
2,110 kg
4,652 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
InfinitiFX II50 V8
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Mercedes-BenzM-class (W164)Facelift 2008ML 500 V8
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
InfinitiFX II50 V85.8 s
Mercedes-BenzM-class (W164)Facelift 2008ML 500 V85.8 s

Fuel consumption comparison

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

Chart data table
VehicleValue
InfinitiFX II50 V8
13.1 L/100 km
18.0 mpg US
21.6 mpg UK
Mercedes-BenzM-class (W164)Facelift 2008ML 500 V8
13.1 L/100 km
18.0 mpg US
21.6 mpg UK

Power-to-weight comparison

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

Chart data table
VehicleValue
InfinitiFX II50 V8
188 hp/t
140 kW/t
5.3 kg/hp
Mercedes-BenzM-class (W164)Facelift 2008ML 500 V8
184 hp/t
137 kW/t
5.4 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
InfinitiFX II50 V8
687 km
427 mi
Mercedes-BenzM-class (W164)Facelift 2008ML 500 V8
725 km
451 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
InfinitiFX II50 V8
390 hp
291 kW
5.8 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Mercedes-BenzM-class (W164)Facelift 2008ML 500 V8
388 hp
289 kW
5.8 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
InfinitiFX II50 V8
Power
390 hp
291 kW
0-100 km/h5.8 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
5 doors
5 seats
Trunk
702 L
24.8 cu ft
Length
4,860 mm
191.3 in
Height
1,680 mm
66.1 in
Mercedes-BenzM-class (W164)Facelift 2008ML 500 V8
Power
388 hp
289 kW
0-100 km/h5.8 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
5 doors
5 seats
Trunk
833 L
29.4 cu ft
Length
4,781 mm
188.2 in
Height
1,815 mm
71.5 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
InfinitiFX II50 V8
Power
390 hp
291 kW
0-100 km/h5.8 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
13.1 L/100 km
18.0 mpg US
21.6 mpg UK
Mercedes-BenzM-class (W164)Facelift 2008ML 500 V8
Power
388 hp
289 kW
0-100 km/h5.8 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
13.1 L/100 km
18.0 mpg US
21.6 mpg UK

Infiniti FX II 50 V8 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
InfinitiFX II50 V8
13.1 L/100 km
18.0 mpg US
21.6 mpg UK
5.8 s
Mercedes-BenzM-class (W164)Facelift 2008ML 500 V8
13.1 L/100 km
18.0 mpg US
21.6 mpg UK
5.8 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
InfinitiFX II50 V8
188 hp/t
140 kW/t
5.3 kg/hp
13.1 L/100 km
18.0 mpg US
21.6 mpg UK
Mercedes-BenzM-class (W164)Facelift 2008ML 500 V8
184 hp/t
137 kW/t
5.4 kg/hp
13.1 L/100 km
18.0 mpg US
21.6 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleInfinitiFX II50 V8Mercedes-BenzM-class (W164)Facelift 2008ML 500 V8
Power
390 hp
291 kW
388 hp
289 kW
Torque
500 Nm
369 lb-ft
530 Nm
391 lb-ft
Acceleration
5.8 s
5.8 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
2,075 kg
4,575 lb
2,110 kg
4,652 lb
Fuel consumption
13.1 L/100 km
18.0 mpg US
21.6 mpg UK
13.1 L/100 km
18.0 mpg US
21.6 mpg UK
Practicality
Doors/seats
5 doors
5 seats
Trunk
702 L
24.8 cu ft
Length
4,860 mm
191.3 in
Height
1,680 mm
66.1 in
Doors/seats
5 doors
5 seats
Trunk
833 L
29.4 cu ft
Length
4,781 mm
188.2 in
Height
1,815 mm
71.5 in
Range score
687 km
427 mi
725 km
451 mi
Trunk score
702 L
24.8 cu ft
833 L
29.4 cu ft
Power-to-weight score
188 hp/t
140 kW/t
5.3 kg/hp
184 hp/t
137 kW/t
5.4 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 FX II 50 V8Mercedes-Benz M-class (W164) Facelift 2008 ML 500 V8
Consumption13.1 L/100 km18 mpg US21.6 mpg UK13.1 L/100 km18 mpg US21.6 mpg UK
Cost / 100 km22.93 LC100 km22.93 LC100 km
Cost / 100 mi36.89 LC100 mi36.89 LC100 mi
Annual fuel used1,965 L519 US gal432 UK gal1,965 L519 US gal432 UK gal
Annual fuel cost3,439 LC/year3,439 LC/year

Head-to-head comparisons

Infiniti FX II 50 V8

  • Has 2 hp more
  • Is 35 kg lighter
  • Has 4 hp/t better power-to-weight

Pros

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

Cons

  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
Infiniti FX II 50 V8
Mercedes-Benz M-class (W164) ML 500 V8
Compare selected cars
2 vehicles selected

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