The Comparative Analysis :
Mercedes E 300 d Coupé 9G-TRONIC (18 - ..) vs. Porsche Cayman S (09 - 12)
€ 54,300

€ 62,600

€ 54,300
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 62,600
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The Mercedes E 300 d Coupé is significantly bigger in every dimension. It's 18.9 inches longer, 2.3 inches wider and 4.9 inches taller than the Porsche Cayman S.
Mercedes E 300 d Coupé
Porsche Cayman S
56.3
73.2
80.9
51.4
70.9
77.9
73.2 in
Width
70.9 in
80.9 in
Width Incl. Mirrors
77.9 in
56.3 in
Height
51.4 in
113.1
190
95.1
171.1
190 in
Length
171.1 in
113.1 in
Wheelbase
95.1 in
Vehicle Weight
Mercedes E 300 d Coupé
Porsche Cayman S
3869 lb
Curb Weight
3142 lb
5159 lb
Gross Vehicle
Weight
Weight
3627 lb

Weight Difference:
728 lb
18.82 %

General
Mercedes E 300 d Coupé
Porsche Cayman S
C238
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 E 300 d Coupé
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 3800 rpm
Power
316 hp
at 7200 rpm
Mercedes E 300 d Coupé
242 hp
316 hp
Porsche Cayman S
369 lb‑ft
at 1600 rpm
Max. Torque
273 lb‑ft
at 4750 rpm
Mercedes E 300 d Coupé
369 lb‑ft
273 lb‑ft
Porsche Cayman S
Performance
Mercedes E 300 d Coupé
Porsche Cayman S
155 mph
Maximum Speed
172 mph
6.3 sec
Acceleration 0 to 62 mph
5.2 sec
62 mph
62
mph
mph
289 ft
0.000 sec

Mercedes E 300 d Coupé
62 mph
62
mph
mph
236 ft
0.000 sec

Porsche Cayman S
▶ REPLAY
15.99 lb/hp
Weight-to-Power Ratio
9.94 lb/hp
Mercedes E 300 d Coupé
15.99 lb/hp
9.94 lb/hp
Porsche Cayman S
Fuel Economy / Emissions
Mercedes E 300 d Coupé
Porsche Cayman S
Fuel Economy
47 mpg
combined
24 mpg
Mercedes E 300 d Coupé
47 mpg
24 mpg
Porsche Cayman S
36 mpg
city
16 mpg
57 mpg
highway
33 mpg
13.2 gal
Fuel Tank Capacity
17.2 gal
621 mi
Range
412 mi
Mercedes E 300 d Coupé
621 mi
412 mi
Porsche Cayman S
Environmental Impact
102.8 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).
185.7 kWh
Mercedes E 300 d Coupé
102.8 kWh
185.7 kWh
Porsche Cayman S
Euro 6d-TEMP
Emission Standard
Euro 5
246 g/mi (WLTP)
CO2 Emissions
370 g/mi (NEFZ)
Practical Convenience
Mercedes E 300 d Coupé
Porsche Cayman S
3
Doors
2
4
No. of Seats
2
1290 lb
Maximum Payload
485 lb
12 cu ft
Trunk Volume
11.6 cu ft









No data
Cargo Volume (Seats Down)
No data