The Comparative Analysis :
Rolls-Royce Phantom 6.8 V12 Automatic (10 - 17) vs. Mercedes S 420 CDI long 7G-TRONIC (06 - 09)
€ 417,600

€ 98,900

€ 417,600
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 98,900
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The Rolls-Royce Phantom 6.8 V12 is significantly bigger in every dimension. It's 63.2 cm longer, 11.9 cm wider and 16.5 cm taller than the Mercedes S 420 CDI long.
Rolls-Royce Phantom 6.8 V12
Mercedes S 420 CDI long
1638
1990
2190
1473
1871
2120
1990 mm
Width
1871 mm
2190 mm
Width Incl. Mirrors
2120 mm
1638 mm
Height
1473 mm
3570
5842
3165
5210
5842 mm
Length
5210 mm
3570 mm
Wheelbase
3165 mm
Vehicle Weight
Rolls-Royce Phantom 6.8 V12
Mercedes S 420 CDI long
2550 kg
Kerb Weight
2140 kg
3050 kg
Gross Vehicle
Weight
Weight
2660 kg

Weight Difference:
410 kg
16.08 %

General
Rolls-Royce Phantom 6.8 V12
Mercedes S 420 CDI long
RR1
Generation
W221
Saloon
Car Body Style
Saloon
Super Unleaded (98 RON)
Fuel Type
Diesel

Rear-wheel drive
Drive
Rear-wheel drive

6-speed automatic transmission
Transmission
7-speed automatic transmission
Engine
Rolls-Royce Phantom 6.8 V12
Mercedes S 420 CDI long
V12 petrol engine (naturally aspirated engine)
Engine Type
V8 diesel engine with turbocharger
Engine Series
Mercedes-Benz OM 629
Engine Code
OM 629.911

4
Valves
4
12
Cylinders
8
6749 CC
Engine Capacity
3996 CC
454 bhp
at 5350 rpm
Power
316 bhp
at 3600 rpm
Rolls-Royce Phantom 6.8 V12
454 bhp
316 bhp
Mercedes S 420 CDI long
720 NM
at 3500 rpm
Max. Torque
730 NM
at 2200 rpm
Rolls-Royce Phantom 6.8 V12
720 NM
730 NM
Mercedes S 420 CDI long
Performance
Rolls-Royce Phantom 6.8 V12
Mercedes S 420 CDI long
149 mph
Maximum Speed
155 mph
5.9 sec
Acceleration 0 to 62 mph
6 sec
62 mph
62
mph
mph
82 m
0.000 sec

Rolls-Royce Phantom 6.8 V12
62 mph
62
mph
mph
83 m
0.000 sec

Mercedes S 420 CDI long
▶ REPLAY
5.62 kg/bhp
Weight-to-Power Ratio
6.77 kg/bhp
Rolls-Royce Phantom 6.8 V12
5.62 kg/bhp
6.77 kg/bhp
Mercedes S 420 CDI long
Fuel Economy / Emissions
Rolls-Royce Phantom 6.8 V12
Mercedes S 420 CDI long
Fuel Economy
19 mpg
combined
30 mpg
Rolls-Royce Phantom 6.8 V12
19 mpg
30 mpg
Mercedes S 420 CDI long
12 mpg
city
22 mpg
28 mpg
motorway
39 mpg
100 L
Fuel Tank Capacity
90 L
420 mi
Range
595 mi
Rolls-Royce Phantom 6.8 V12
420 mi
595 mi
Mercedes S 420 CDI long
Environmental Impact
280.3 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).
193.4 kWh
Rolls-Royce Phantom 6.8 V12
280.3 kWh
193.4 kWh
Mercedes S 420 CDI long
Euro 6b (NEFZ)
Emission Standard
Euro 4 III
347 g/km (NEFZ)
CO2 Emissions
247 g/km (NEFZ)
Practical Convenience
Rolls-Royce Phantom 6.8 V12
Mercedes S 420 CDI long
4
Doors
4
5
No. of Seats
5
500 kg
Maximum Payload
520 kg
460 L
Boot Capacity
560 L











No data
Boot Capacity (Seats Down)
No data