The Comparative Analysis :
Mercedes CLS Coupé 250 d 4MATIC 7G-TRONIC PLUS (15 - 17) vs. Porsche Cayman S (05 - 09)
€ 59,900

€ 60,300

€ 59,900
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 60,300
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The Mercedes CLS Coupé 250 d is significantly bigger in every dimension. It's 23.5 inches longer, 3.1 inches wider and 4.4 inches taller than the Porsche Cayman S.
Mercedes CLS Coupé 250 d
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
170.9
194.4 in
Length
170.9 in
113.1 in
Wheelbase
95.1 in
Vehicle Weight
Mercedes CLS Coupé 250 d
Porsche Cayman S
4134 lb
Curb Weight
3120 lb
5203 lb
Gross Vehicle
Weight
Weight
3594 lb

Weight Difference:
1014 lb
24.53 %

General
Mercedes CLS Coupé 250 d
Porsche Cayman S
C218
Generation
987C
Coupe
Car Body Style
Coupe
Diesel
Fuel Type
Premium Unleaded

Permanent all-wheel drive (AWD)
Drivetrain
Rear-wheel drive

7-speed automatic transmission
Transmission
6-speed manual transmission
Engine
Mercedes CLS Coupé 250 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 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
291 hp
at 6250 rpm
Mercedes CLS Coupé 250 d
201 hp
291 hp
Porsche Cayman S
369 lb‑ft
at 1600 rpm
Max. Torque
251 lb‑ft
at 4400 rpm
Mercedes CLS Coupé 250 d
369 lb‑ft
251 lb‑ft
Porsche Cayman S
Performance
Mercedes CLS Coupé 250 d
Porsche Cayman S
147 mph
Maximum Speed
171 mph
7.9 sec
Acceleration 0 to 62 mph
5.4 sec
62 mph
62
mph
mph
361 ft
0.000 sec

Mercedes CLS Coupé 250 d
62 mph
62
mph
mph
246 ft
0.000 sec

Porsche Cayman S
▶ REPLAY
20.57 lb/hp
Weight-to-Power Ratio
10.72 lb/hp
Mercedes CLS Coupé 250 d
20.57 lb/hp
10.72 lb/hp
Porsche Cayman S
Fuel Economy / Emissions
Mercedes CLS Coupé 250 d
Porsche Cayman S
Fuel Economy
44 mpg
combined
22 mpg
Mercedes CLS Coupé 250 d
44 mpg
22 mpg
Porsche Cayman S
37 mpg
city
15 mpg
51 mpg
highway
30 mpg
15.6 gal
Fuel Tank Capacity
16.9 gal
692 mi
Range
375 mi
Mercedes CLS Coupé 250 d
692 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 250 d
109.1 kWh
200.8 kWh
Porsche Cayman S
Euro 6b (NEFZ)
Emission Standard
Euro 4
224 g/mi (NEFZ)
CO2 Emissions
409 g/mi (NEFZ)
Practical Convenience
Mercedes CLS Coupé 250 d
Porsche Cayman S
4
Doors
2
4
No. of Seats
2
1069 lb
Maximum Payload
474 lb
13.5 cu ft
Trunk Volume
11.6 cu ft









No data
Cargo Volume (Seats Down)
No data