The Comparative Analysis :
Mercedes CLS Coupé 450 EQ Boost 4MATIC 9G-TRONIC (18 - 19) vs. Porsche Cayman S PDK (09 - 12)
€ 70,900

€ 65,500

€ 70,900
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 65,500
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The Mercedes CLS Coupé 450 EQ Boost is significantly bigger in every dimension. It's 64.1 cm longer, 8.9 cm wider and 12.9 cm taller than the Porsche Cayman S.
Mercedes CLS Coupé 450 EQ Boost
Porsche Cayman S
1435
1890
2069
1306
1801
1978
1890 mm
Width
1801 mm
2069 mm
Width Incl. Mirrors
1978 mm
1435 mm
Height
1306 mm
2939
4988
2415
4347
4988 mm
Length
4347 mm
2939 mm
Wheelbase
2415 mm
Vehicle Weight
Mercedes CLS Coupé 450 EQ Boost
Porsche Cayman S
1940 kg
Kerb Weight
1450 kg
2585 kg
Gross Vehicle
Weight
Weight
1675 kg

Weight Difference:
490 kg
25.26 %

General
Mercedes CLS Coupé 450 EQ Boost
Porsche Cayman S
C257
Generation
987C
Coupe
Car Body Style
Coupe
Unleaded (95 RON)
Fuel Type
Super Unleaded (98 RON)

Permanent all-wheel drive
Drive
Rear-wheel drive

9-speed automatic transmission
Transmission
7-speed dual clutch transmission
Engine
Mercedes CLS Coupé 450 EQ Boost
Porsche Cayman S
6-cylinder mild hybrid petrol engine with turbocharger and electric driven compressor
Engine Type
6-cylinder boxer petrol engine (naturally aspirated engine)
Mercedes-Benz M 256
Engine Series
M 256.930
Engine Code

4
Valves
4
6
Cylinders
6
2999 CC
Engine Capacity
3436 CC
383 bhp
at 5500 rpm
Power
316 bhp
at 7200 rpm
Mercedes CLS Coupé 450 EQ Boost
383 bhp
316 bhp
Porsche Cayman S
500 NM
at 1600 rpm
Max. Torque
370 NM
at 4750 rpm
Mercedes CLS Coupé 450 EQ Boost
500 NM
370 NM
Porsche Cayman S
Performance
Mercedes CLS Coupé 450 EQ Boost
Porsche Cayman S
155 mph
Maximum Speed
171 mph
4.8 sec
Acceleration 0 to 62 mph
5.1 sec
62 mph
62
mph
mph
67 m
0.000 sec

Mercedes CLS Coupé 450 EQ Boost
62 mph
62
mph
mph
71 m
0.000 sec

Porsche Cayman S
▶ REPLAY
5.07 kg/bhp
Weight-to-Power Ratio
4.59 kg/bhp
Mercedes CLS Coupé 450 EQ Boost
5.07 kg/bhp
4.59 kg/bhp
Porsche Cayman S
Fuel Economy / Emissions
Mercedes CLS Coupé 450 EQ Boost
Porsche Cayman S
Fuel Economy
38 mpg
combined
30 mpg
Mercedes CLS Coupé 450 EQ Boost
38 mpg
30 mpg
Porsche Cayman S
29 mpg
city
20 mpg
46 mpg
motorway
43 mpg
66 L
Fuel Tank Capacity
65 L
547 mi
Range
429 mi
Mercedes CLS Coupé 450 EQ Boost
547 mi
429 mi
Porsche Cayman S
Environmental Impact
142.1 kWh
Total Energy Consumption
per 100 miles ⓘThe total energy consumption per 100 miles is the amount of energy consumed by a vehicle when burning fuel or using electricity per 100 miles (final energy), and the energy required to produce the appropriate amount of fuel or electricity (primary energy).
per 100 miles ⓘThe total energy consumption per 100 miles is the amount of energy consumed by a vehicle when burning fuel or using electricity per 100 miles (final energy), and the energy required to produce the appropriate amount of fuel or electricity (primary energy).
178.2 kWh
Mercedes CLS Coupé 450 EQ Boost
142.1 kWh
178.2 kWh
Porsche Cayman S
Euro 6d-TEMP (WLTP) 36AG-AI
Emission Standard
Euro 5
190 g/km (WLTP)
CO2 Emissions
221 g/km (NEFZ)
Practical Convenience
Mercedes CLS Coupé 450 EQ Boost
Porsche Cayman S
4
Doors
2
5
No. of Seats
2
645 kg
Maximum Payload
225 kg
520 L
Boot Capacity
410 L









No data
Boot Capacity (Seats Down)
No data