The Comparative Analysis :

Audi A8 L 3.0 TDI clean diesel quattro tiptronic (12 - 13) vs. Mercedes S 420 CDI long 7G-TRONIC (06 - 09)

€ 82,600
Audi A8 L 3.0 TDI clean diesel quattro tiptronic (12 - 13) Audi A8 L 3.0 TDI clean diesel
€ 98,900
 Mercedes S 420 CDI long 7G-TRONIC (06 - 09) Mercedes S 420 CDI long
€ 82,600
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 Audi A8 L 3.0 TDI clean diesel is considerably bigger in every dimension. It's 2.2 inches longer, 3.1 inches wider and 10.6 inches taller than the Mercedes S 420 CDI long.
Audi A8 L 3.0 TDI clean diesel
Mercedes S 420 CDI long
68.5
Blueprint Audi A8 L 3.0 TDI clean diesel quattro tiptronic (12 - 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
68.5 in
Height
58 in
Blueprint Audi A8 L 3.0 TDI clean diesel quattro tiptronic (12 - 13)
122.9
207.4
Blueprint Mercedes S 420 CDI long 7G-TRONIC (06 - 09)
124.6
205.1
207.4 in
Length
205.1 in
122.9 in
Wheelbase
124.6 in

Vehicle Weight

Audi A8 L 3.0 TDI clean diesel
Mercedes S 420 CDI long
4420 lb
Curb Weight
4718 lb
5688 lb
Gross Vehicle
Weight
5864 lb
Audi A8 L 3.0 TDI clean diesel quattro tiptronic (12 - 13)
Weight Difference:
298 lb
6.32 %
Mercedes S 420 CDI long 7G-TRONIC (06 - 09)

General

Audi A8 L 3.0 TDI clean diesel
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 L 3.0 TDI clean diesel
Mercedes S 420 CDI long
V6 diesel engine with tur­bo­charger
Engine Type
V8 diesel engine with tur­bo­charger
Engine Series
Mercedes-Benz OM 629
CDTA, CMHA, CDTC
Engine Code
OM 629.911
4
Valves
4
6
Cylinders
8
3 L / 147 cu in
Displacement
4 L / 196 cu in
247 hp
at 4000 rpm
Power
316 hp
at 3600 rpm
Audi A8 L 3.0 TDI clean diesel
247 hp
316 hp
Mercedes S 420 CDI long
406 lb‑ft
at 1500 rpm
Max. Torque
538 lb‑ft
at 2200 rpm
Audi A8 L 3.0 TDI clean diesel
406 lb‑ft
538 lb‑ft
Mercedes S 420 CDI long

Performance

Audi A8 L 3.0 TDI clean diesel
Mercedes S 420 CDI long
155 mph
Maximum Speed
155 mph
6.2 sec
Acceleration 0 to 62 mph
6 sec
62 mph 62
mph

282 ft
0.000 sec

Audi A8 L 3.0 TDI clean diesel

62 mph 62
mph

272 ft
0.000 sec

Mercedes S 420 CDI long

▶ REPLAY
17.89 lb/hp
Weight-to-Power Ratio
14.93 lb/hp
Audi A8 L 3.0 TDI clean diesel
17.89 lb/hp
14.93 lb/hp
Mercedes S 420 CDI long

Fuel Economy / Emissions

Audi A8 L 3.0 TDI clean diesel
Mercedes S 420 CDI long
Fuel Economy
36 mpg
combined
25 mpg
Audi A8 L 3.0 TDI clean diesel
36 mpg
25 mpg
Mercedes S 420 CDI long
29 mpg
city
18 mpg
No data
highway
33 mpg
Kraftstoffanzeige
23.8 gal
Fuel Tank Capacity
23.8 gal
Kraftstoffanzeige
861 mi
Range
595 mi
Audi A8 L 3.0 TDI clean diesel
861 mi
595 mi
Mercedes S 420 CDI long
Environmental Impact
133.7 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 L 3.0 TDI clean diesel
133.7 kWh
193.4 kWh
Mercedes S 420 CDI long
Euro 6b (NEFZ)
Emission Standard
Euro 4 III
275 g/mi (NEFZ)
CO2 Emissions
398 g/mi (NEFZ)

Practical Convenience

Audi A8 L 3.0 TDI clean diesel
Mercedes S 420 CDI long
4
Doors
4
5
No. of Seats
5
1268 lb
Maximum Payload
1146 lb
14.4 cu ft
Trunk Volume
15.9 cu ft
No data
Cargo Volume (Seats Down)
No data