The Comparative Analysis :
Mercedes S 420 CDI long 7G-TRONIC (06 - 09) vs. BMW 740i Steptronic (12 - 15)
€ 98,900
€ 83,900
€ 98,900
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 83,900
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The dimensions of these vehicles differ slightly. The Mercedes S 420 CDI long is 5.2 inches longer, 1.2 inches narrower and 0.1 inches taller than the BMW 740i.
Mercedes S 420 CDI long
BMW 740i
58
73.7
83.5
57.9
74.9
84
73.7 in
Width
74.9 in
83.5 in
Width Incl. Mirrors
84 in
58 in
Height
57.9 in
124.6
205.1
120.9
200
205.1 in
Length
200 in
124.6 in
Wheelbase
120.9 in
Vehicle Weight
Mercedes S 420 CDI long
BMW 740i
4718 lb
Curb Weight
4189 lb
5864 lb
Gross Vehicle
Weight
Weight
5545 lb
Weight Difference:
529 lb
11.21 %
General
Mercedes S 420 CDI long
BMW 740i
W221
Generation
F01
Sedan
Car Body Style
Sedan
Diesel
Fuel Type
Premium Unleaded
Rear-wheel drive
Drivetrain
Rear-wheel drive
7-speed automatic transmission
Transmission
8-speed automatic transmission
Engine
Mercedes S 420 CDI long
BMW 740i
V8 diesel engine with turbocharger
Engine Type
Straight-six gasoline engine with two turbochargers (biturbo)
Mercedes-Benz OM 629
Engine Series
BMW N55
OM 629.911
Engine Code
N55-B30
4
Valves
4
8
Cylinders
6
4 L / 196 cu in
Displacement
3 L / 147 cu in
316 hp
at 3600 rpm
Power
316 hp
at 5800 rpm
Mercedes S 420 CDI long
316 hp
316 hp
BMW 740i
538 lb‑ft
at 2200 rpm
Max. Torque
332 lb‑ft
at 1300 rpm
Mercedes S 420 CDI long
538 lb‑ft
332 lb‑ft
BMW 740i
Performance
Mercedes S 420 CDI long
BMW 740i
155 mph
Maximum Speed
155 mph
6 sec
Acceleration 0 to 62 mph
5.7 sec
62 mph
62
mph
mph
272 ft
0.000 sec
Mercedes S 420 CDI long
62 mph
62
mph
mph
259 ft
0.000 sec
BMW 740i
▶ REPLAY
14.93 lb/hp
Weight-to-Power Ratio
13.26 lb/hp
Mercedes S 420 CDI long
14.93 lb/hp
13.26 lb/hp
BMW 740i
Fuel Economy / Emissions
Mercedes S 420 CDI long
BMW 740i
Fuel Economy
25 mpg
combined
30 mpg
Mercedes S 420 CDI long
25 mpg
30 mpg
BMW 740i
18 mpg
city
22 mpg
33 mpg
highway
No data
23.8 gal
Fuel Tank Capacity
21.1 gal
595 mi
Range
629 mi
Mercedes S 420 CDI long
595 mi
629 mi
BMW 740i
Environmental Impact
193.4 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).
149.7 kWh
Mercedes S 420 CDI long
193.4 kWh
149.7 kWh
BMW 740i
Euro 4 III
Emission Standard
Euro 5
398 g/mi (NEFZ)
CO2 Emissions
296 g/mi (NEFZ)
Practical Convenience
Mercedes S 420 CDI long
BMW 740i
4
Doors
4
5
No. of Seats
5
1146 lb
Maximum Payload
1356 lb
15.9 cu ft
Trunk Volume
14.2 cu ft
No data
Cargo Volume (Seats Down)
No data
