The Comparative Analysis :
Porsche 718 Cayman GTS PDK (17 - 18) vs. Mercedes CLS Coupé 400 d 4MATIC 9G-TRONIC (18 - ..)
€ 79,400

€ 72,500

€ 79,400
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 72,500
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The Porsche 718 Cayman GTS is significantly smaller in every dimension. It's 23.4 inches shorter, 3.5 inches narrower and 5.9 inches lower than the Mercedes CLS Coupé 400 d.
Porsche 718 Cayman GTS
Mercedes CLS Coupé 400 d
50.6
70.9
78.5
56.5
74.4
81.5
70.9 in
Width
74.4 in
78.5 in
Width Incl. Mirrors
81.5 in
50.6 in
Height
56.5 in
97.4
173
115.7
196.4
173 in
Length
196.4 in
97.4 in
Wheelbase
115.7 in
Vehicle Weight
Porsche 718 Cayman GTS
Mercedes CLS Coupé 400 d
3263 lb
Curb Weight
4266 lb
3759 lb
Gross Vehicle
Weight
Weight
5611 lb

Weight Difference:
1003 lb
23.51 %

General
Porsche 718 Cayman GTS
Mercedes CLS Coupé 400 d
982C
Generation
C257
Coupe
Car Body Style
Coupe
Premium Unleaded
Fuel Type
Diesel

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

7-speed dual clutch transmission
Transmission
9-speed automatic transmission
Engine
Porsche 718 Cayman GTS
Mercedes CLS Coupé 400 d
4-cylinder boxer gasoline engine with turbocharger
Engine Type
Straight-six diesel engine with two turbochargers (biturbo)
Engine Series
Mercedes-Benz OM 656
Engine Code
OM 656.929

4
Valves
4
4
Cylinders
6
2.5 L / 122 cu in
Displacement
2.9 L / 142 cu in
360 hp
at 6500 rpm
Power
335 hp
at 4400 rpm
Porsche 718 Cayman GTS
360 hp
335 hp
Mercedes CLS Coupé 400 d
317 lb‑ft
at 1900 rpm
Max. Torque
516 lb‑ft
at 1200 rpm
Porsche 718 Cayman GTS
317 lb‑ft
516 lb‑ft
Mercedes CLS Coupé 400 d
Performance
Porsche 718 Cayman GTS
Mercedes CLS Coupé 400 d
180 mph
Maximum Speed
155 mph
4.3 sec
Acceleration 0 to 62 mph
5 sec
62 mph
62
mph
mph
197 ft
0.000 sec

Porsche 718 Cayman GTS
62 mph
62
mph
mph
226 ft
0.000 sec

Mercedes CLS Coupé 400 d
▶ REPLAY
9.06 lb/hp
Weight-to-Power Ratio
12.73 lb/hp
Porsche 718 Cayman GTS
9.06 lb/hp
12.73 lb/hp
Mercedes CLS Coupé 400 d
Fuel Economy / Emissions
Porsche 718 Cayman GTS
Mercedes CLS Coupé 400 d
Fuel Economy
29 mpg
combined
40 mpg
Porsche 718 Cayman GTS
29 mpg
40 mpg
Mercedes CLS Coupé 400 d
22 mpg
city
34 mpg
36 mpg
highway
44 mpg
16.9 gal
Fuel Tank Capacity
13.2 gal
485 mi
Range
526 mi
Porsche 718 Cayman GTS
485 mi
526 mi
Mercedes CLS Coupé 400 d
Environmental Impact
155.3 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).
121.3 kWh
Porsche 718 Cayman GTS
155.3 kWh
121.3 kWh
Mercedes CLS Coupé 400 d
Euro 6c (NEFZ) 36ZA-ZF
Emission Standard
Euro 6d-TEMP
299 g/mi (NEFZ)
CO2 Emissions
291 g/mi (WLTP)
Practical Convenience
Porsche 718 Cayman GTS
Mercedes CLS Coupé 400 d
2
Doors
4
2
No. of Seats
5
496 lb
Maximum Payload
1345 lb
12 cu ft
Trunk Volume
14.7 cu ft










No data
Cargo Volume (Seats Down)
No data