Car comparison

BMW 8 Series (G15) M850ivsMercedes-Benz GLC Coupe (C253) AMG GLC 63 S

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

New comparison

BMW 8 Series (G15)

M850i

530 hp4395 ccGasolineAWDAutomaticTurbochargedCoupe2018-2020
VS

Mercedes-Benz GLC Coupe (C253)

AMG GLC 63 S

510 hp3982 ccGasolineAWDAutomaticTwin-turboCoupe2017-2019

Comparison overview

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

Best choices

BMW 8 Series (G15) M850i

  • Quickest 0-100 km/h
    3.7 s
  • Fastest top speed
    265 km/h
    165 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    530 hp
    395 kW
  • Highest torque
    750 Nm
    553 lb-ft
  • Lightest
    1,890 kg
    4,167 lb
  • Best power-to-weight
    280 hp/t
    209 kW/t
    3.6 kg/hp
  • Lowest combined fuel consumption
    10.5 L/100 km
    22.4 mpg US
    26.9 mpg UK
  • Lowest CO2 emissions
    240 g/km
  • Best estimated range
    648 km
    402 mi
  • Best performance score
    86/100
  • Best economy score
    79/100

Specification comparison

Specification comparison
ModelBMW8 Series (G15)M850iMercedes-BenzGLC Coupe (C253)AMG GLC 63 S
Power
530hp395kW
510hp380kW
Torque
750Nm553lb-ft
700Nm516lb-ft
Curb weight
1,890kg4,167lb
1,945kg4,288lb
Gross weight
2,395kg5,280lb
2,590kg5,710lb
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
49.0s99% target: 262 km/h / 163 mph
Calculated
49.6s99% target: 262 km/h / 163 mph
Calculated
0-100 km/h
3.7s
3.8s
0-200 km/h
12.7s
Calculated
13.0s
Calculated
0-60 mph
3.5s
Calculated
3.6s
Calculated
Fuel consumption
10.5L/100 km22.4mpg US26.9mpg UK
10.7L/100 km22mpg US26.4mpg UK
Fuel consumption city-
14.1L/100 km16.7mpg US20.0mpg UK
Fuel consumption highway-
8.7L/100 km27mpg US32.5mpg UK
Quarter mile
11.7s
Calculated
11.8s
Calculated
Power-to-weight
280hp/t209kW/t127hp/1000 lb
Calculated
262hp/t196kW/t119hp/1000 lb
Calculated
Torque-to-weight
397Nm/t266lb-ft/ton
Calculated
360Nm/t241lb-ft/ton
Calculated
Estimated range
648km402mi
Calculated
617km383mi
Calculated
Displacement
4,395cc268cu in
3,982cc243cu in
Length
4,851mm191in
4,745mm187in
Width
1,902mm75in
-
Height
1,346mm53in
1,584mm62in
Wheelbase
2,822mm111in
2,873mm113in
Front track
1,627mm64in
1,662mm65in
Rear track
1,642mm65in
1,649mm65in
Ground clearance
128mm5in
-
Trunk volume
420L
-
Doors
2
4
Seats
4
4
Fuel tank
68L
66L
CO2 emissions
240g/km
244g/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.

BMW 8 Series (G15) M850iMercedes-Benz GLC Coupe (C253) AMG GLC 63 SPowerTorque
  • BMW 8 Series (G15) M850i: Power / Torque
  • Mercedes-Benz GLC Coupe (C253) AMG GLC 63 S: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
BMW8 Series (G15)M850i5,500-6,000 rpm1,800-4,600 rpm6,250 rpm
Mercedes-BenzGLC Coupe (C253)AMG GLC 63 S5,500-6,250 rpm1,750-4,500 rpm6,500 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricBMW8 Series (G15)M850iMercedes-BenzGLC Coupe (C253)AMG GLC 63 S
Acceleration checkpoints
0-60 mph
0-97 km/h
3.5 s
3.6 s
0-100 km/h
0-62 mph
3.7 s
3.8 s
0-200 km/h
0-124 mph
12.7 s
13.0 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
1.9 s
1.9 s
330 ft
101 m
5.1 s
5.1 s
1/8 mile
201 m
7.6 s
7.7 s
1000 ft
305 m
9.8 s
9.9 s
1/4 mile
402 m
11.7 s
11.8 s
Trap speed
1/4 mile
402 m
193 km/h
120 mph
192 km/h
120 mph

Power comparison

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

Chart data table
VehicleValue
BMW8 Series (G15)M850i
530 hp
395 kW
Mercedes-BenzGLC Coupe (C253)AMG GLC 63 S
510 hp
380 kW

BMW 8 Series (G15) M850i has 20 hp more than Mercedes-Benz GLC Coupe (C253) AMG GLC 63 S.

The biggest power difference is between Mercedes-Benz GLC Coupe (C253) AMG GLC 63 S and BMW 8 Series (G15) M850i: 20 hp (15 kW).

Torque comparison

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

Chart data table
VehicleValue
BMW8 Series (G15)M850i
750 Nm
553 lb-ft
Mercedes-BenzGLC Coupe (C253)AMG GLC 63 S
700 Nm
516 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
BMW8 Series (G15)M850i
1,890 kg
4,167 lb
Mercedes-BenzGLC Coupe (C253)AMG GLC 63 S
1,945 kg
4,288 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
BMW8 Series (G15)M850i
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Mercedes-BenzGLC Coupe (C253)AMG GLC 63 S
Unrestricted
265 km/h165 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
BMW8 Series (G15)M850i3.7 s
Mercedes-BenzGLC Coupe (C253)AMG GLC 63 S3.8 s

The biggest 0-100 km/h difference is between BMW 8 Series (G15) M850i and Mercedes-Benz GLC Coupe (C253) AMG GLC 63 S: 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
BMW8 Series (G15)M850i
10.5 L/100 km
22.4 mpg US
26.9 mpg UK
Mercedes-BenzGLC Coupe (C253)AMG GLC 63 S
10.7 L/100 km
22.0 mpg US
26.4 mpg UK

Power-to-weight comparison

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

Chart data table
VehicleValue
BMW8 Series (G15)M850i
280 hp/t
209 kW/t
3.6 kg/hp
Mercedes-BenzGLC Coupe (C253)AMG GLC 63 S
262 hp/t
196 kW/t
3.8 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
BMW8 Series (G15)M850i
648 km
402 mi
Mercedes-BenzGLC Coupe (C253)AMG GLC 63 S
617 km
383 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
BMW8 Series (G15)M850i
530 hp
395 kW
3.7 s
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Mercedes-BenzGLC Coupe (C253)AMG GLC 63 S
510 hp
380 kW
3.8 s
Unrestricted
265 km/h165 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
BMW8 Series (G15)M850i
Power
530 hp
395 kW
0-100 km/h3.7 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
2 doors
4 seats
Trunk
420 L
14.8 cu ft
Length
4,851 mm
191.0 in
Height
1,346 mm
53.0 in
Mercedes-BenzGLC Coupe (C253)AMG GLC 63 S
Power
510 hp
380 kW
0-100 km/h3.8 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
4 doors
4 seats
Trunk-
Length
4,745 mm
186.8 in
Height
1,584 mm
62.4 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
BMW8 Series (G15)M850i
Power
530 hp
395 kW
0-100 km/h3.7 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
10.5 L/100 km
22.4 mpg US
26.9 mpg UK
Mercedes-BenzGLC Coupe (C253)AMG GLC 63 S
Power
510 hp
380 kW
0-100 km/h3.8 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
10.7 L/100 km
22.0 mpg US
26.4 mpg UK

BMW 8 Series (G15) M850i 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
BMW8 Series (G15)M850i
10.5 L/100 km
22.4 mpg US
26.9 mpg UK
3.7 s
Mercedes-BenzGLC Coupe (C253)AMG GLC 63 S
10.7 L/100 km
22.0 mpg US
26.4 mpg UK
3.8 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
BMW8 Series (G15)M850i
280 hp/t
209 kW/t
3.6 kg/hp
10.5 L/100 km
22.4 mpg US
26.9 mpg UK
Mercedes-BenzGLC Coupe (C253)AMG GLC 63 S
262 hp/t
196 kW/t
3.8 kg/hp
10.7 L/100 km
22.0 mpg US
26.4 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleBMW8 Series (G15)M850iMercedes-BenzGLC Coupe (C253)AMG GLC 63 S
Power
530 hp
395 kW
510 hp
380 kW
Torque
750 Nm
553 lb-ft
700 Nm
516 lb-ft
Acceleration
3.7 s
3.8 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Lightness
1,890 kg
4,167 lb
1,945 kg
4,288 lb
Fuel consumption
10.5 L/100 km
22.4 mpg US
26.9 mpg UK
10.7 L/100 km
22.0 mpg US
26.4 mpg UK
Practicality
Doors/seats
2 doors
4 seats
Trunk
420 L
14.8 cu ft
Length
4,851 mm
191.0 in
Height
1,346 mm
53.0 in
Doors/seats
4 doors
4 seats
Trunk-
Length
4,745 mm
186.8 in
Height
1,584 mm
62.4 in
Range score
648 km
402 mi
617 km
383 mi
CO2 score
240 g/km
244 g/km
Trunk score
420 L
14.8 cu ft
-
Power-to-weight score
280 hp/t
209 kW/t
3.6 kg/hp
262 hp/t
196 kW/t
3.8 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
VehicleBMW 8 Series (G15) M850iMercedes-Benz GLC Coupe (C253) AMG GLC 63 S
Consumption10.5 L/100 km22.4 mpg US26.9 mpg UK10.7 L/100 km22 mpg US26.4 mpg UK
Cost / 100 km18.38 LC100 km18.72 LC100 km
Cost / 100 mi29.57 LC100 mi30.13 LC100 mi
Annual fuel used1,575 L416 US gal346 UK gal1,605 L424 US gal353 UK gal
Annual fuel cost2,756 LC/year2,809 LC/year

Head-to-head comparisons

BMW 8 Series (G15) M850i

  • Has 20 hp more
  • Has 50 Nm more
  • Is 55 kg lighter
  • Is 0.1 s quicker from 0-100 km/h
  • Uses 0.2 L/100 km less fuel
  • Has 18 hp/t better power-to-weight
  • Has 31 km (19 mi) more estimated range
  • Emits 4 g/km less CO2

Pros

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

Choose cars to compare

Brand
Model
Generation
Engine or modification
BMW 8 Series (G15) M850i
Mercedes-Benz GLC Coupe (C253) AMG GLC 63 S
Compare selected cars
2 vehicles selected

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BMW 8 Series (G15) M850i vs Mercedes-Benz GLC Coupe (C253) AMG GLC 63 S - car comparison - FastVsFaster