The Comparative Analysis :
Mercedes CLS Coupé 300 d 9G-TRONIC (18 - ..) vs. Porsche 718 Cayman PDK (16 - 18)
€ 60,600

€ 55,500

€ 60,600
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 55,500
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The Mercedes CLS Coupé 300 d is significantly bigger in every dimension. It's 24 inches longer, 3.5 inches wider and 5.5 inches taller than the Porsche 718 Cayman.
Mercedes CLS Coupé 300 d
Porsche 718 Cayman
56.5
74.4
81.5
51
70.9
78.5
74.4 in
Width
70.9 in
81.5 in
Width Incl. Mirrors
78.5 in
56.5 in
Height
51 in
115.7
196.4
97.4
172.4
196.4 in
Length
172.4 in
115.7 in
Wheelbase
97.4 in
Vehicle Weight
Mercedes CLS Coupé 300 d
Porsche 718 Cayman
4023 lb
Curb Weight
3175 lb
5390 lb
Gross Vehicle
Weight
Weight
3715 lb

Weight Difference:
849 lb
21.1 %

General
Mercedes CLS Coupé 300 d
Porsche 718 Cayman
C257
Generation
982C
Coupe
Car Body Style
Coupe
Diesel
Fuel Type
Premium Unleaded

Rear-wheel drive
Drivetrain
Rear-wheel drive

9-speed automatic transmission
Transmission
7-speed dual clutch transmission
Engine
Mercedes CLS Coupé 300 d
Porsche 718 Cayman
Straight-four diesel engine with two turbochargers (biturbo)
Engine Type
4-cylinder boxer gasoline engine with turbocharger
Mercedes-Benz OM 654
Engine Series
OM 654.920
Engine Code

4
Valves
4
4
Cylinders
4
2 L / 98 cu in
Displacement
2 L / 98 cu in
242 hp
at 4600 rpm
Power
296 hp
at 6500 rpm
Mercedes CLS Coupé 300 d
242 hp
296 hp
Porsche 718 Cayman
369 lb‑ft
at 1600 rpm
Max. Torque
280 lb‑ft
at 1950 rpm
Mercedes CLS Coupé 300 d
369 lb‑ft
280 lb‑ft
Porsche 718 Cayman
Performance
Mercedes CLS Coupé 300 d
Porsche 718 Cayman
155 mph
Maximum Speed
171 mph
6.4 sec
Acceleration 0 to 62 mph
4.9 sec
62 mph
62
mph
mph
292 ft
0.000 sec

Mercedes CLS Coupé 300 d
62 mph
62
mph
mph
223 ft
0.000 sec

Porsche 718 Cayman
▶ REPLAY
16.62 lb/hp
Weight-to-Power Ratio
10.73 lb/hp
Mercedes CLS Coupé 300 d
16.62 lb/hp
10.73 lb/hp
Porsche 718 Cayman
Fuel Economy / Emissions
Mercedes CLS Coupé 300 d
Porsche 718 Cayman
Fuel Economy
44 mpg
combined
34 mpg
Mercedes CLS Coupé 300 d
44 mpg
34 mpg
Porsche 718 Cayman
36 mpg
city
26 mpg
52 mpg
highway
41 mpg
13.2 gal
Fuel Tank Capacity
14.3 gal
586 mi
Range
487 mi
Mercedes CLS Coupé 300 d
586 mi
487 mi
Porsche 718 Cayman
Environmental Impact
109.1 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).
130.7 kWh
Mercedes CLS Coupé 300 d
109.1 kWh
130.7 kWh
Porsche 718 Cayman
Euro 6d-TEMP
Emission Standard
Euro 6c (NEFZ) 36ZA-ZF
254 g/mi (WLTP)
CO2 Emissions
254 g/mi (NEFZ)
Practical Convenience
Mercedes CLS Coupé 300 d
Porsche 718 Cayman
4
Doors
2
5
No. of Seats
2
1367 lb
Maximum Payload
540 lb
14.7 cu ft
Trunk Volume
12 cu ft










No data
Cargo Volume (Seats Down)
No data