The Comparative Analysis :
Mercedes CLS Coupé 300 d 9G-TRONIC (18 - ..) vs. Porsche Cayman S Sport (08 - 09)
€ 60,600

€ 69,900

€ 60,600
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 69,900
ⓘ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 25.5 inches longer, 3.5 inches wider and 5.5 inches taller than the Porsche Cayman S.
Mercedes CLS Coupé 300 d
Porsche Cayman S
56.5
74.4
81.5
51
70.9
77.9
74.4 in
Width
70.9 in
81.5 in
Width Incl. Mirrors
77.9 in
56.5 in
Height
51 in
115.7
196.4
95.1
170.9
196.4 in
Length
170.9 in
115.7 in
Wheelbase
95.1 in
Vehicle Weight
Mercedes CLS Coupé 300 d
Porsche Cayman S
4023 lb
Curb Weight
3120 lb
5390 lb
Gross Vehicle
Weight
Weight
3594 lb

Weight Difference:
904 lb
22.47 %

General
Mercedes CLS Coupé 300 d
Porsche Cayman S
C257
Generation
987C
Coupe
Car Body Style
Coupe
Diesel
Fuel Type
Premium Unleaded

Rear-wheel drive
Drivetrain
Rear-wheel drive

9-speed automatic transmission
Transmission
6-speed manual transmission
Engine
Mercedes CLS Coupé 300 d
Porsche Cayman S
Straight-four diesel engine with two turbochargers (biturbo)
Engine Type
6-cylinder boxer gasoline engine (naturally aspirated engine)
Mercedes-Benz OM 654
Engine Series
OM 654.920
Engine Code

4
Valves
4
4
Cylinders
6
2 L / 98 cu in
Displacement
3.4 L / 166 cu in
242 hp
at 4600 rpm
Power
299 hp
at 6250 rpm
Mercedes CLS Coupé 300 d
242 hp
299 hp
Porsche Cayman S
369 lb‑ft
at 1600 rpm
Max. Torque
251 lb‑ft
at 4400 rpm
Mercedes CLS Coupé 300 d
369 lb‑ft
251 lb‑ft
Porsche Cayman S
Performance
Mercedes CLS Coupé 300 d
Porsche Cayman S
155 mph
Maximum Speed
171 mph
6.4 sec
Acceleration 0 to 62 mph
5.4 sec
62 mph
62
mph
mph
292 ft
0.000 sec

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

Porsche Cayman S
▶ REPLAY
16.62 lb/hp
Weight-to-Power Ratio
10.43 lb/hp
Mercedes CLS Coupé 300 d
16.62 lb/hp
10.43 lb/hp
Porsche Cayman S
Fuel Economy / Emissions
Mercedes CLS Coupé 300 d
Porsche Cayman S
Fuel Economy
44 mpg
combined
22 mpg
Mercedes CLS Coupé 300 d
44 mpg
22 mpg
Porsche Cayman S
36 mpg
city
15 mpg
52 mpg
highway
30 mpg
13.2 gal
Fuel Tank Capacity
16.9 gal
586 mi
Range
375 mi
Mercedes CLS Coupé 300 d
586 mi
375 mi
Porsche Cayman S
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).
200.8 kWh
Mercedes CLS Coupé 300 d
109.1 kWh
200.8 kWh
Porsche Cayman S
Euro 6d-TEMP
Emission Standard
Euro 4
254 g/mi (WLTP)
CO2 Emissions
409 g/mi (NEFZ)
Practical Convenience
Mercedes CLS Coupé 300 d
Porsche Cayman S
4
Doors
2
5
No. of Seats
2
1367 lb
Maximum Payload
474 lb
14.7 cu ft
Trunk Volume
11.6 cu ft









No data
Cargo Volume (Seats Down)
No data