Car comparison

Mercedes-Benz GLC Coupe (C254) GLC 450dvsPorsche Cayenne III · Facelift 2023 3.0 V6

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

New comparison

Mercedes-Benz GLC Coupe (C254)

GLC 450d

367 hp2989 ccDieselAWDAutomaticTwin-turboCoupe2023-present

Porsche Cayenne III · Facelift 2023

3.0 V6

353 hp2995 ccGasolineAWDAutomaticTurbochargedCoupe2023-present

Comparison overview

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

Mercedes-Benz GLC Coupe (C254) GLC 450d

Quickest 0-100 km/h
4.7 s
Fastest top speed
260 km/h
162 mph Unrestricted
250 km/h
155 mph Restricted
Most powerful
367 hp
274 kW
Highest torque
750 Nm
553 lb-ft
Lightest
2,025 kg
4,464 lb
Best power-to-weight
181 hp/t
135 kW/t
5.5 kg/hp
Lowest combined fuel consumption
6.9 L/100 km
34.1 mpg US
40.9 mpg UK
Best estimated range
899 km
558 mi
Best overall score
75/100
Best performance score
76/100
Best economy score
88/100
Best practicality score
72/100

Porsche Cayenne III Facelift 2023 3.0 V6

Largest trunk
554 L

Specification comparison

Specification comparison
Model	Mercedes-BenzGLC Coupe (C254)GLC 450d	PorscheCayenne IIIFacelift 20233.0 V6
Power	367hp274kW	353hp263kW
Torque	750Nm553lb-ft	500Nm369lb-ft
Curb weight	2,025kg4,464lb	2,085kg4,597lb
Gross weight	2,620kg5,776lb	2,820kg6,217lb
Top speed	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph Calculated	248 km/h 154 mph
To 99% top speed	75.2s99% target: 257 km/h / 160 mph Calculated	84.3s99% target: 246 km/h / 153 mph Calculated
0-100 km/h	4.7s	5.7s
0-200 km/h	18.4s Calculated	23.7s
0-60 mph	4.5s Calculated	5.4s Calculated
Fuel consumption	6.9L/100 km34.1mpg US40.9mpg UK	12.1L/100 km19.4mpg US23.3mpg UK
Quarter mile	12.9s Calculated	13.9s Calculated
Power-to-weight	181hp/t135kW/t82hp/1000 lb Calculated	169hp/t126kW/t77hp/1000 lb Calculated
Torque-to-weight	370Nm/t248lb-ft/ton Calculated	240Nm/t160lb-ft/ton Calculated
Estimated range	899km558mi Calculated	620km385mi Calculated
Displacement	2,989cc182cu in	2,995cc183cu in
Length	4,764mm188in	4,930mm194in
Width	1,890mm74in	1,983mm78in
Height	1,605mm63in	1,678mm66in
Wheelbase	2,888mm114in	2,895mm114in
Front track	1,627mm64in	-
Rear track	1,640mm65in	-
Ground clearance	193mm8in	192mm8in
Trunk volume	545L	554L
Max trunk volume	1,490L	1,502L
Doors	5	5
Seats	5	4
Fuel tank	62L	75L

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.

Mercedes-Benz GLC Coupe (C254) GLC 450dPorsche Cayenne III Facelift 2023 3.0 V6PowerTorque

Dyno simulation data table
Vehicle	Peak power RPM	Peak torque RPM	Max engine speed
Mercedes-BenzGLC Coupe (C254)GLC 450d	4,000 rpm	1,350-2,800 rpm	4,250 rpm
PorscheCayenne IIIFacelift 20233.0 V6	5,400-6,400 rpm	1,450-4,500 rpm	6,650 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
Metric	Mercedes-BenzGLC Coupe (C254)GLC 450d	PorscheCayenne IIIFacelift 20233.0 V6
	Acceleration checkpoints
0-60 mph 0-97 km/h	4.5 s	5.4 s
0-100 km/h 0-62 mph	4.7 s	5.7 s
0-200 km/h 0-124 mph	18.4 s	23.7 s
Top speed	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph Limited	248 km/h 154 mph
	Drag race simulation
60 ft 18 m	2.0 s	2.2 s
330 ft 101 m	5.5 s	5.9 s
1/8 mile 201 m	8.4 s	9.0 s
1000 ft 305 m	10.9 s	11.7 s
1/4 mile 402 m	12.9 s	13.9 s
Trap speed 1/4 mile 402 m	174 km/h 108 mph	163 km/h 101 mph

Power comparison

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

Chart data table
Vehicle	Value
Mercedes-BenzGLC Coupe (C254)GLC 450d	367 hp 274 kW
PorscheCayenne IIIFacelift 20233.0 V6	353 hp 263 kW

Mercedes-Benz GLC Coupe (C254) GLC 450d has 14 hp more than Porsche Cayenne III Facelift 2023 3.0 V6.

The biggest power difference is between Porsche Cayenne III Facelift 2023 3.0 V6 and Mercedes-Benz GLC Coupe (C254) GLC 450d: 14 hp (10 kW).

Torque comparison

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

Chart data table
Vehicle	Value
Mercedes-BenzGLC Coupe (C254)GLC 450d	750 Nm 553 lb-ft
PorscheCayenne IIIFacelift 20233.0 V6	500 Nm 369 lb-ft

Curb weight comparison

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

Chart data table
Vehicle	Value
Mercedes-BenzGLC Coupe (C254)GLC 450d	2,025 kg 4,464 lb
PorscheCayenne IIIFacelift 20233.0 V6	2,085 kg 4,597 lb

Top speed without limiter comparison

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

Chart data table
Vehicle	Value
Mercedes-BenzGLC Coupe (C254)GLC 450d	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph
PorscheCayenne IIIFacelift 20233.0 V6	248 km/h 154 mph

0-100 km/h comparison

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

Chart data table
Vehicle	Value
Mercedes-BenzGLC Coupe (C254)GLC 450d	4.7 s
PorscheCayenne IIIFacelift 20233.0 V6	5.7 s

The biggest 0-100 km/h difference is between Mercedes-Benz GLC Coupe (C254) GLC 450d and Porsche Cayenne III Facelift 2023 3.0 V6: 1.0 s.

Fuel consumption comparison

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

Chart data table
Vehicle	Value
Mercedes-BenzGLC Coupe (C254)GLC 450d	6.9 L/100 km 34.1 mpg US 40.9 mpg UK
PorscheCayenne IIIFacelift 20233.0 V6	12.1 L/100 km 19.4 mpg US 23.3 mpg UK

The biggest fuel consumption difference is between Mercedes-Benz GLC Coupe (C254) GLC 450d and Porsche Cayenne III Facelift 2023 3.0 V6: 5.2 L/100 km.

Power-to-weight comparison

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

Chart data table
Vehicle	Value
Mercedes-BenzGLC Coupe (C254)GLC 450d	181 hp/t 135 kW/t 5.5 kg/hp
PorscheCayenne IIIFacelift 20233.0 V6	169 hp/t 126 kW/t 5.9 kg/hp

Estimated range comparison

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

Chart data table
Vehicle	Value
Mercedes-BenzGLC Coupe (C254)GLC 450d	899 km 558 mi
PorscheCayenne IIIFacelift 20233.0 V6	620 km 385 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
Vehicle	Power	Acceleration	Top speed
Mercedes-BenzGLC Coupe (C254)GLC 450d	367 hp 274 kW	4.7 s	Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph
PorscheCayenne IIIFacelift 20233.0 V6	353 hp 263 kW	5.7 s	248 km/h 154 mph

Most attractive quadrant

Scatter chart with performance score on the X axis and practicality score on the Y axis.

Vehicle

Performance score

Practicality score

Mercedes-BenzGLC Coupe (C254)GLC 450d

Power	367 hp 274 kW
0-100 km/h	4.7 s
Top speed Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph

Doors/seats	5 doors 5 seats
Trunk	545 L 19.2 cu ft
Length	4,764 mm 187.6 in
Height	1,605 mm 63.2 in

PorscheCayenne IIIFacelift 20233.0 V6

Power	353 hp 263 kW
0-100 km/h	5.7 s
Top speed 248 km/h 154 mph

Doors/seats	5 doors 4 seats
Trunk	554 L 19.6 cu ft
Length	4,930 mm 194.1 in
Height	1,678 mm 66.1 in

Performance vs fuel economy

Cars closer to the top-right corner combine stronger performance with better fuel economy scores.

Vehicle

Performance score

Fuel economy score

Mercedes-BenzGLC Coupe (C254)GLC 450d

Power	367 hp 274 kW
0-100 km/h	4.7 s
Top speed Unrestricted 260 km/h162 mph Restricted 250 km/h155 mph

6.9 L/100 km

34.1 mpg US

40.9 mpg UK

PorscheCayenne IIIFacelift 20233.0 V6

Power	353 hp 263 kW
0-100 km/h	5.7 s
Top speed 248 km/h 154 mph

12.1 L/100 km

19.4 mpg US

23.3 mpg UK

Mercedes-Benz GLC Coupe (C254) GLC 450d 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
Vehicle	Fuel consumption, L/100 km	0-100 km/h, s
Mercedes-BenzGLC Coupe (C254)GLC 450d	6.9 L/100 km 34.1 mpg US 40.9 mpg UK	4.7 s
PorscheCayenne IIIFacelift 20233.0 V6	12.1 L/100 km 19.4 mpg US 23.3 mpg UK	5.7 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
Vehicle	Power-to-weight, hp/t	Fuel consumption, L/100 km
Mercedes-BenzGLC Coupe (C254)GLC 450d	181 hp/t 135 kW/t 5.5 kg/hp	6.9 L/100 km 34.1 mpg US 40.9 mpg UK
PorscheCayenne IIIFacelift 20233.0 V6	169 hp/t 126 kW/t 5.9 kg/hp	12.1 L/100 km 19.4 mpg US 23.3 mpg UK

Detailed score breakdown

Vehicle

Mercedes-BenzGLC Coupe (C254)GLC 450d

PorscheCayenne IIIFacelift 20233.0 V6

Power

367 hp

274 kW

353 hp

263 kW

Torque

750 Nm

553 lb-ft

500 Nm

369 lb-ft

Acceleration

4.7 s

5.7 s

Top speed

Unrestricted

260 km/h162 mph

Restricted

250 km/h155 mph

248 km/h

154 mph

Lightness

2,025 kg

4,464 lb

2,085 kg

4,597 lb

Fuel consumption

6.9 L/100 km

34.1 mpg US

40.9 mpg UK

12.1 L/100 km

19.4 mpg US

23.3 mpg UK

Practicality

Doors/seats	5 doors 5 seats
Trunk	545 L 19.2 cu ft
Length	4,764 mm 187.6 in
Height	1,605 mm 63.2 in

Doors/seats	5 doors 4 seats
Trunk	554 L 19.6 cu ft
Length	4,930 mm 194.1 in
Height	1,678 mm 66.1 in

Range score

899 km

558 mi

620 km

385 mi

Trunk score

545 L

19.2 cu ft

554 L

19.6 cu ft

Power-to-weight score

181 hp/t

135 kW/t

5.5 kg/hp

169 hp/t

126 kW/t

5.9 kg/hp

Overall

Fixed score

Fuel cost and annual usage

Estimate running costs from combined consumption, your annual distance, and the fuel price in your local currency.

Average annual distanceDistance unitFuel price in your local currencyPrice unit

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
Vehicle	Mercedes-Benz GLC Coupe (C254) GLC 450d	Porsche Cayenne III Facelift 2023 3.0 V6
Consumption	6.9 L/100 km34.1 mpg US40.9 mpg UK	12.1 L/100 km19.4 mpg US23.3 mpg UK
Cost / 100 km	12.08 LC100 km	21.18 LC100 km
Cost / 100 mi	19.43 LC100 mi	34.08 LC100 mi
Annual fuel used	1,035 L273 US gal228 UK gal	1,815 L479 US gal399 UK gal
Annual fuel cost	1,811 LC/year	3,176 LC/year