The Comparative Analysis :
Mercedes S 420 CDI long 7G-TRONIC (06 - 09) vs. Audi A8 3.0 TFSI quattro tiptronic (13 - 14)
€ 98,900
€ 79,100
€ 98,900
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 79,100
ⓘ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 3 inches longer, 3.1 inches narrower and 0.5 inches taller than the Audi A8 3.0 TFSI.
Mercedes S 420 CDI long
Audi A8 3.0 TFSI
58
73.7
83.5
57.5
76.7
83.1
73.7 in
Width
76.7 in
83.5 in
Width Incl. Mirrors
83.1 in
58 in
Height
57.5 in
124.6
205.1
117.8
202.2
205.1 in
Length
202.2 in
124.6 in
Wheelbase
117.8 in
Vehicle Weight
Mercedes S 420 CDI long
Audi A8 3.0 TFSI
4718 lb
Curb Weight
4200 lb
5864 lb
Gross Vehicle
Weight
Weight
5556 lb
Weight Difference:
518 lb
10.98 %
General
Mercedes S 420 CDI long
Audi A8 3.0 TFSI
W221
Generation
D4 (4H)
Sedan
Car Body Style
Sedan
Diesel
Fuel Type
Mid-Grade Unleaded
Rear-wheel drive
Drivetrain
Permanent all-wheel drive (AWD)
7-speed automatic transmission
Transmission
8-speed automatic transmission
Engine
Mercedes S 420 CDI long
Audi A8 3.0 TFSI
V8 diesel engine with turbocharger
Engine Type
V6 gasoline engine with turbocharger
Mercedes-Benz OM 629
Engine Series
OM 629.911
Engine Code
CGWD, CREA
4
Valves
4
8
Cylinders
6
4 L / 196 cu in
Displacement
3 L / 147 cu in
316 hp
at 3600 rpm
Power
306 hp
at 5200 rpm
Mercedes S 420 CDI long
316 hp
306 hp
Audi A8 3.0 TFSI
538 lb‑ft
at 2200 rpm
Max. Torque
325 lb‑ft
at 2900 rpm
Mercedes S 420 CDI long
538 lb‑ft
325 lb‑ft
Audi A8 3.0 TFSI
Performance
Mercedes S 420 CDI long
Audi A8 3.0 TFSI
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
Audi A8 3.0 TFSI
▶ REPLAY
14.93 lb/hp
Weight-to-Power Ratio
13.73 lb/hp
Mercedes S 420 CDI long
14.93 lb/hp
13.73 lb/hp
Audi A8 3.0 TFSI
Fuel Economy / Emissions
Mercedes S 420 CDI long
Audi A8 3.0 TFSI
Fuel Economy
25 mpg
combined
30 mpg
Mercedes S 420 CDI long
25 mpg
30 mpg
Audi A8 3.0 TFSI
18 mpg
city
22 mpg
33 mpg
highway
No data
23.8 gal
Fuel Tank Capacity
21.7 gal
595 mi
Range
653 mi
Mercedes S 420 CDI long
595 mi
653 mi
Audi A8 3.0 TFSI
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).
147.7 kWh
Mercedes S 420 CDI long
193.4 kWh
147.7 kWh
Audi A8 3.0 TFSI
Euro 4 III
Emission Standard
Euro 6b (NEFZ)
398 g/mi (NEFZ)
CO2 Emissions
295 g/mi (NEFZ)
Practical Convenience
Mercedes S 420 CDI long
Audi A8 3.0 TFSI
4
Doors
4
5
No. of Seats
5
1146 lb
Maximum Payload
1356 lb
15.9 cu ft
Trunk Volume
13.9 cu ft
No data
Cargo Volume (Seats Down)
No data
