The Comparative Analysis :

Audi A8 4.2 TDI quattro tiptronic (10 - 13) vs. Mercedes S 420 CDI long 7G-TRONIC (06 - 09)

€ 92,700
Audi A8 4.2 TDI quattro tiptronic (10 - 13) Audi A8 4.2 TDI
€ 98,900
 Mercedes S 420 CDI long 7G-TRONIC (06 - 09) Mercedes S 420 CDI long
€ 92,700
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 dimensions of these vehicles differ slightly. The Audi A8 4.2 TDI is 2.9 inches shorter, 3.1 inches wider and 0.5 inches lower than the Mercedes S 420 CDI long.
Audi A8 4.2 TDI
Mercedes S 420 CDI long
57.5
Blueprint Audi A8 4.2 TDI quattro tiptronic (10 - 13)
76.7
83.1
58
Blueprint Mercedes S 420 CDI long 7G-TRONIC (06 - 09)
73.7
83.5
76.7 in
Width
73.7 in
83.1 in
Width Incl. Mirrors
83.5 in
57.5 in
Height
58 in
Blueprint Audi A8 4.2 TDI quattro tiptronic (10 - 13)
117.8
202.2
Blueprint Mercedes S 420 CDI long 7G-TRONIC (06 - 09)
124.6
205.1
202.2 in
Length
205.1 in
117.8 in
Wheelbase
124.6 in

Vehicle Weight

Audi A8 4.2 TDI
Mercedes S 420 CDI long
4564 lb
Curb Weight
4718 lb
5864 lb
Gross Vehicle
Weight
5864 lb
Audi A8 4.2 TDI quattro tiptronic (10 - 13)
Weight Difference:
154 lb
3.26 %
Mercedes S 420 CDI long 7G-TRONIC (06 - 09)

General

Audi A8 4.2 TDI
Mercedes S 420 CDI long
D4 (4H)
Generation
W221
Sedan
Car Body Style
Sedan
Diesel
Fuel Type
Diesel
Permanent all-wheel drive (AWD)
Drivetrain
Rear-wheel drive
8-speed automatic transmission
Transmission
7-speed automatic transmission

Engine

Audi A8 4.2 TDI
Mercedes S 420 CDI long
V8 diesel engine with two tur­bo­chargers (bi­turbo)
Engine Type
V8 diesel engine with tur­bo­charger
Engine Series
Mercedes-Benz OM 629
CDSB
Engine Code
OM 629.911
4
Valves
4
8
Cylinders
8
4.1 L / 201 cu in
Displacement
4 L / 196 cu in
346 hp
at 4000 rpm
Power
316 hp
at 3600 rpm
Audi A8 4.2 TDI
346 hp
316 hp
Mercedes S 420 CDI long
590 lb‑ft
at 1750 rpm
Max. Torque
538 lb‑ft
at 2200 rpm
Audi A8 4.2 TDI
590 lb‑ft
538 lb‑ft
Mercedes S 420 CDI long

Performance

Audi A8 4.2 TDI
Mercedes S 420 CDI long
155 mph
Maximum Speed
155 mph
5.5 sec
Acceleration 0 to 62 mph
6 sec
62 mph 62
mph

249 ft
0.000 sec

Audi A8 4.2 TDI

62 mph 62
mph

272 ft
0.000 sec

Mercedes S 420 CDI long

▶ REPLAY
13.19 lb/hp
Weight-to-Power Ratio
14.93 lb/hp
Audi A8 4.2 TDI
13.19 lb/hp
14.93 lb/hp
Mercedes S 420 CDI long

Fuel Economy / Emissions

Audi A8 4.2 TDI
Mercedes S 420 CDI long
Fuel Economy
32 mpg
combined
25 mpg
Audi A8 4.2 TDI
32 mpg
25 mpg
Mercedes S 420 CDI long
25 mpg
city
18 mpg
No data
highway
33 mpg
Kraftstoffanzeige
23.8 gal
Fuel Tank Capacity
23.8 gal
Kraftstoffanzeige
756 mi
Range
595 mi
Audi A8 4.2 TDI
756 mi
595 mi
Mercedes S 420 CDI long
Environmental Impact
152.2 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).
193.4 kWh
Audi A8 4.2 TDI
152.2 kWh
193.4 kWh
Mercedes S 420 CDI long
Euro 5
Emission Standard
Euro 4 III
314 g/mi (NEFZ)
CO2 Emissions
398 g/mi (NEFZ)

Practical Convenience

Audi A8 4.2 TDI
Mercedes S 420 CDI long
4
Doors
4
5
No. of Seats
5
1301 lb
Maximum Payload
1146 lb
14.4 cu ft
Trunk Volume
15.9 cu ft
No data
Cargo Volume (Seats Down)
No data