The Comparative Analysis :
BMW 750Li xDrive Steptronic (15 - 18) vs. Mercedes S 420 CDI 7G-TRONIC (06 - 09)
€ 121,700
€ 91,100
€ 121,700
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 91,100
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The BMW 750Li is considerably bigger in every dimension. It's 15.8 cm longer, 3.1 cm wider and 1.2 cm taller than the Mercedes S 420 CDI.
BMW 750Li
Mercedes S 420 CDI
1485
1902
2169
1473
1871
2120
1902 mm
Width
1871 mm
2169 mm
Width Incl. Mirrors
2120 mm
1485 mm
Height
1473 mm
3210
5238
3035
5080
5238 mm
Length
5080 mm
3210 mm
Wheelbase
3035 mm
Vehicle Weight
BMW 750Li
Mercedes S 420 CDI
1990 kg
Kerb Weight
2090 kg
2615 kg
Gross Vehicle
Weight
Weight
2640 kg
Weight Difference:
100 kg
4.78 %
General
BMW 750Li
Mercedes S 420 CDI
G12
Generation
W221
Saloon
Car Body Style
Saloon
Super Unleaded (98 RON)
Fuel Type
Diesel

Permanent all-wheel drive
Drive
Rear-wheel drive

8-speed automatic transmission
Transmission
7-speed automatic transmission
Engine
BMW 750Li
Mercedes S 420 CDI
V8 petrol engine with two turbochargers (biturbo)
Engine Type
V8 diesel engine with turbocharger
BMW N63
Engine Series
Mercedes-Benz OM 629
N63-B44
Engine Code
OM 629.911

4
Valves
4
8
Cylinders
8
4395 CC
Engine Capacity
3996 CC
443 bhp
at 5500 rpm
Power
316 bhp
at 3600 rpm
BMW 750Li
443 bhp
316 bhp
Mercedes S 420 CDI
650 NM
at 1800 rpm
Max. Torque
730 NM
at 2200 rpm
BMW 750Li
650 NM
730 NM
Mercedes S 420 CDI
Performance
BMW 750Li
Mercedes S 420 CDI
155 mph
Maximum Speed
155 mph
4.5 sec
Acceleration 0 to 62 mph
6 sec
62 mph
62
mph
mph
63 m
0.000 sec
BMW 750Li
62 mph
62
mph
mph
83 m
0.000 sec
Mercedes S 420 CDI
▶ REPLAY
4.49 kg/bhp
Weight-to-Power Ratio
6.61 kg/bhp
BMW 750Li
4.49 kg/bhp
6.61 kg/bhp
Mercedes S 420 CDI
Fuel Economy / Emissions
BMW 750Li
Mercedes S 420 CDI
Fuel Economy
34 mpg
combined
30 mpg
BMW 750Li
34 mpg
30 mpg
Mercedes S 420 CDI
24 mpg
city
22 mpg
No data
motorway
39 mpg
78 L
Fuel Tank Capacity
90 L
584 mi
Range
595 mi
BMW 750Li
584 mi
595 mi
Mercedes S 420 CDI
Environmental Impact
157.2 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
BMW 750Li
157.2 kWh
193.4 kWh
Mercedes S 420 CDI
Euro 6b (NEFZ)
Emission Standard
Euro 4 III
192 g/km (NEFZ)
CO2 Emissions
247 g/km (NEFZ)
Practical Convenience
BMW 750Li
Mercedes S 420 CDI
4
Doors
4
5
No. of Seats
5
625 kg
Maximum Payload
550 kg
515 L
Boot Capacity
560 L











No data
Boot Capacity (Seats Down)
No data

















