The Comparative Analysis :

Audi A8 3.0 TFSI quattro tiptronic (10 - 13) vs. Mercedes S 420 CDI long 7G-TRONIC (06 - 09)

€ 74,600
Audi A8 3.0 TFSI quattro tiptronic (10 - 13) Audi A8 3.0 TFSI
€ 98,900
 Mercedes S 420 CDI long 7G-TRONIC (06 - 09) Mercedes S 420 CDI long
€ 74,600
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 dimensions of these vehicles differ slightly. The Audi A8 3.0 TFSI is 7.3 cm shorter, 7.8 cm wider and 1.3 cm lower than the Mercedes S 420 CDI long.
Audi A8 3.0 TFSI
Mercedes S 420 CDI long
1460
Blueprint Audi A8 3.0 TFSI quattro tiptronic (10 - 13)
1949
2111
1473
Blueprint Mercedes S 420 CDI long 7G-TRONIC (06 - 09)
1871
2120
1949 mm
Width
1871 mm
2111 mm
Width Incl. Mirrors
2120 mm
1460 mm
Height
1473 mm
Blueprint Audi A8 3.0 TFSI quattro tiptronic (10 - 13)
2992
5137
Blueprint Mercedes S 420 CDI long 7G-TRONIC (06 - 09)
3165
5210
5137 mm
Length
5210 mm
2992 mm
Wheelbase
3165 mm

Vehicle Weight

Audi A8 3.0 TFSI
Mercedes S 420 CDI long
1905 kg
Kerb Weight
2140 kg
2520 kg
Gross Vehicle
Weight
2660 kg
Audi A8 3.0 TFSI quattro tiptronic (10 - 13)
Weight Difference:
235 kg
10.98 %
Mercedes S 420 CDI long 7G-TRONIC (06 - 09)

General

Audi A8 3.0 TFSI
Mercedes S 420 CDI long
D4 (4H)
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

Audi A8 3.0 TFSI
Mercedes S 420 CDI long
V6 petrol engine with tur­bo­charger
Engine Type
V8 diesel engine with tur­bo­charger
Engine Series
Mercedes-Benz OM 629
CGXA, CGWA, CREG
Engine Code
OM 629.911
4
Valves
4
6
Cylinders
8
2995 CC
Engine Capacity
3996 CC
286 bhp
at 4850 rpm
Power
316 bhp
at 3600 rpm
Audi A8 3.0 TFSI
286 bhp
316 bhp
Mercedes S 420 CDI long
420 NM
at 2500 rpm
Max. Torque
730 NM
at 2200 rpm
Audi A8 3.0 TFSI
420 NM
730 NM
Mercedes S 420 CDI long

Performance

Audi A8 3.0 TFSI
Mercedes S 420 CDI long
155 mph
Maximum Speed
155 mph
6.1 sec
Acceleration 0 to 62 mph
6 sec
62 mph 62
mph

85 m
0.000 sec

Audi A8 3.0 TFSI

62 mph 62
mph

83 m
0.000 sec

Mercedes S 420 CDI long

▶ REPLAY
6.66 kg/bhp
Weight-to-Power Ratio
6.77 kg/bhp
Audi A8 3.0 TFSI
6.66 kg/bhp
6.77 kg/bhp
Mercedes S 420 CDI long

Fuel Economy / Emissions

Audi A8 3.0 TFSI
Mercedes S 420 CDI long
Fuel Economy
32 mpg
combined
30 mpg
Audi A8 3.0 TFSI
32 mpg
30 mpg
Mercedes S 420 CDI long
24 mpg
city
22 mpg
No data
motorway
39 mpg
Kraftstoffanzeige
90 L
Fuel Tank Capacity
90 L
Kraftstoffanzeige
636 mi
Range
595 mi
Audi A8 3.0 TFSI
636 mi
595 mi
Mercedes S 420 CDI long
Environmental Impact
166.7 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 3.0 TFSI
166.7 kWh
193.4 kWh
Mercedes S 420 CDI long
Euro 5
Emission Standard
Euro 4 III
204 g/km (NEFZ)
CO2 Emissions
247 g/km (NEFZ)

Practical Convenience

Audi A8 3.0 TFSI
Mercedes S 420 CDI long
4
Doors
4
5
No. of Seats
5
615 kg
Maximum Payload
520 kg
510 L
Boot Capacity
560 L
No data
Boot Capacity (Seats Down)
No data