The Comparative Analysis :
Mercedes CLS Coupé 250 BlueTEC 9G-TRONIC (14 - 15) vs. Porsche Cayman S Black Edition PDK (11 - 12)
€ 56,900

€ 70,800

€ 56,900
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 70,800
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The Mercedes CLS Coupé 250 BlueTEC is significantly bigger in every dimension. It's 23.2 inches longer, 3.1 inches wider and 4.4 inches taller than the Porsche Cayman S.
Mercedes CLS Coupé 250 BlueTEC
Porsche Cayman S
55.8
74.1
81.7
51.4
70.9
77.9
74.1 in
Width
70.9 in
81.7 in
Width Incl. Mirrors
77.9 in
55.8 in
Height
51.4 in
113.1
194.4
95.1
171.1
194.4 in
Length
171.1 in
113.1 in
Wheelbase
95.1 in
Vehicle Weight
Mercedes CLS Coupé 250 BlueTEC
Porsche Cayman S
4001 lb
Curb Weight
3197 lb
5071 lb
Gross Vehicle
Weight
Weight
3693 lb

Weight Difference:
805 lb
20.12 %

General
Mercedes CLS Coupé 250 BlueTEC
Porsche Cayman S
C218
Generation
987C
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 250 BlueTEC
Porsche Cayman S
Straight-four diesel engine with two turbochargers (biturbo)
Engine Type
6-cylinder boxer gasoline engine (naturally aspirated engine)
Mercedes-Benz OM 651
Engine Series
OM 651.924
Engine Code

4
Valves
4
4
Cylinders
6
2.1 L / 103 cu in
Displacement
3.4 L / 166 cu in
201 hp
at 3800 rpm
Power
325 hp
at 7400 rpm
Mercedes CLS Coupé 250 BlueTEC
201 hp
325 hp
Porsche Cayman S
369 lb‑ft
at 1600 rpm
Max. Torque
273 lb‑ft
at 4750 rpm
Mercedes CLS Coupé 250 BlueTEC
369 lb‑ft
273 lb‑ft
Porsche Cayman S
Performance
Mercedes CLS Coupé 250 BlueTEC
Porsche Cayman S
150 mph
Maximum Speed
172 mph
7.5 sec
Acceleration 0 to 62 mph
5 sec
62 mph
62
mph
mph
341 ft
0.000 sec

Mercedes CLS Coupé 250 BlueTEC
62 mph
62
mph
mph
226 ft
0.000 sec

Porsche Cayman S
▶ REPLAY
19.91 lb/hp
Weight-to-Power Ratio
9.84 lb/hp
Mercedes CLS Coupé 250 BlueTEC
19.91 lb/hp
9.84 lb/hp
Porsche Cayman S
Fuel Economy / Emissions
Mercedes CLS Coupé 250 BlueTEC
Porsche Cayman S
Fuel Economy
51 mpg
combined
25 mpg
Mercedes CLS Coupé 250 BlueTEC
51 mpg
25 mpg
Porsche Cayman S
43 mpg
city
17 mpg
57 mpg
highway
36 mpg
15.6 gal
Fuel Tank Capacity
17.2 gal
797 mi
Range
429 mi
Mercedes CLS Coupé 250 BlueTEC
797 mi
429 mi
Porsche Cayman S
Environmental Impact
94.6 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 250 BlueTEC
94.6 kWh
178.2 kWh
Porsche Cayman S
Euro 6b (NEFZ)
Emission Standard
Euro 5
196 g/mi (NEFZ)
CO2 Emissions
356 g/mi (NEFZ)
Practical Convenience
Mercedes CLS Coupé 250 BlueTEC
Porsche Cayman S
4
Doors
2
4
No. of Seats
2
1069 lb
Maximum Payload
496 lb
13.5 cu ft
Trunk Volume
11.6 cu ft









No data
Cargo Volume (Seats Down)
No data