The Comparative Analysis :

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

€ 81,700
Audi A8 L 3.0 TDI quattro tiptronic (10 - 13) Audi A8 L 3.0 TDI
€ 91,100
 Mercedes S 420 CDI 7G-TRONIC (06 - 09) Mercedes S 420 CDI
€ 81,700
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 91,100

ⓘ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 is significantly bigger in every dimension. It's 18.7 cm longer, 7.8 cm wider and 26.8 cm taller than the Mercedes S 420 CDI.
Audi A8 L 3.0 TDI
Mercedes S 420 CDI
1741
Blueprint Audi A8 L 3.0 TDI quattro tiptronic (10 - 13)
1949
2111
1473
Blueprint Mercedes S 420 CDI 7G-TRONIC (06 - 09)
1871
2120
1949 mm
Width
1871 mm
2111 mm
Width Incl. Mirrors
2120 mm
1741 mm
Height
1473 mm
Blueprint Audi A8 L 3.0 TDI quattro tiptronic (10 - 13)
3122
5267
Blueprint Mercedes S 420 CDI 7G-TRONIC (06 - 09)
3035
5080
5267 mm
Length
5080 mm
3122 mm
Wheelbase
3035 mm

Vehicle Weight

Audi A8 L 3.0 TDI
Mercedes S 420 CDI
1965 kg
Kerb Weight
2090 kg
2540 kg
Gross Vehicle
Weight
2640 kg
Audi A8 L 3.0 TDI quattro tiptronic (10 - 13)
Weight Difference:
125 kg
5.98 %
Mercedes S 420 CDI 7G-TRONIC (06 - 09)

General

Audi A8 L 3.0 TDI
Mercedes S 420 CDI
D4 (4H)
Generation
W221
Saloon
Car Body Style
Saloon
Diesel
Fuel Type
Diesel
Permanent all-wheel drive
Drive
Rear-wheel drive
8-speed automatic transmission
Transmission
7-speed automatic transmission

Engine

Audi A8 L 3.0 TDI
Mercedes S 420 CDI
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
2967 CC
Engine Capacity
3996 CC
247 bhp
at 4000 rpm
Power
316 bhp
at 3600 rpm
Audi A8 L 3.0 TDI
247 bhp
316 bhp
Mercedes S 420 CDI
550 NM
at 1500 rpm
Max. Torque
730 NM
at 2200 rpm
Audi A8 L 3.0 TDI
550 NM
730 NM
Mercedes S 420 CDI

Performance

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

86 m
0.000 sec

Audi A8 L 3.0 TDI

62 mph 62
mph

83 m
0.000 sec

Mercedes S 420 CDI

▶ REPLAY
7.96 kg/bhp
Weight-to-Power Ratio
6.61 kg/bhp
Audi A8 L 3.0 TDI
7.96 kg/bhp
6.61 kg/bhp
Mercedes S 420 CDI

Fuel Economy / Emissions

Audi A8 L 3.0 TDI
Mercedes S 420 CDI
Fuel Economy
43 mpg
combined
30 mpg
Audi A8 L 3.0 TDI
43 mpg
30 mpg
Mercedes S 420 CDI
36 mpg
city
22 mpg
No data
motorway
39 mpg
Kraftstoffanzeige
90 L
Fuel Tank Capacity
90 L
Kraftstoffanzeige
861 mi
Range
595 mi
Audi A8 L 3.0 TDI
861 mi
595 mi
Mercedes S 420 CDI
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
133.7 kWh
193.4 kWh
Mercedes S 420 CDI
Euro 5
Emission Standard
Euro 4 III
171 g/km (NEFZ)
CO2 Emissions
247 g/km (NEFZ)

Practical Convenience

Audi A8 L 3.0 TDI
Mercedes S 420 CDI
4
Doors
4
5
No. of Seats
5
575 kg
Maximum Payload
550 kg
510 L
Boot Capacity
560 L
No data
Boot Capacity (Seats Down)
No data