The Comparative Analysis :
Audi A8 4.2 TDI quattro tiptronic (13 - 17) vs. Mercedes S 450 CDI 7G-TRONIC (09 - 10)
€ 102,300

€ 92,700

€ 102,300
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 92,700
ⓘ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 3.9 cm longer, 7.8 cm wider and 2.5 cm lower than the Mercedes S 450 CDI.
Audi A8 4.2 TDI
Mercedes S 450 CDI
1460
1949
2111
1485
1871
2120
1949 mm
Width
1871 mm
2111 mm
Width Incl. Mirrors
2120 mm
1460 mm
Height
1485 mm
2992
5135
3035
5096
5135 mm
Length
5096 mm
2992 mm
Wheelbase
3035 mm
Vehicle Weight
Audi A8 4.2 TDI
Mercedes S 450 CDI
2115 kg
Kerb Weight
2090 kg
2705 kg
Gross Vehicle
Weight
Weight
2690 kg

Weight Difference:
25 kg
1.18 %

General
Audi A8 4.2 TDI
Mercedes S 450 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 4.2 TDI
Mercedes S 450 CDI
V8 diesel engine with two turbochargers (biturbo)
Engine Type
V8 diesel engine with turbocharger
Engine Series
Mercedes-Benz OM 629
CTEC
Engine Code
OM 629.911

4
Valves
4
8
Cylinders
8
4134 CC
Engine Capacity
3996 CC
380 bhp
at 3750 rpm
Power
316 bhp
at 3600 rpm
Audi A8 4.2 TDI
380 bhp
316 bhp
Mercedes S 450 CDI
850 NM
at 2000 rpm
Max. Torque
730 NM
at 2200 rpm
Audi A8 4.2 TDI
850 NM
730 NM
Mercedes S 450 CDI
Performance
Audi A8 4.2 TDI
Mercedes S 450 CDI
155 mph
Maximum Speed
155 mph
4.7 sec
Acceleration 0 to 62 mph
6.6 sec
62 mph
62
mph
mph
65 m
0.000 sec

Audi A8 4.2 TDI
62 mph
62
mph
mph
92 m
0.000 sec

Mercedes S 450 CDI
▶ REPLAY
5.57 kg/bhp
Weight-to-Power Ratio
6.61 kg/bhp
Audi A8 4.2 TDI
5.57 kg/bhp
6.61 kg/bhp
Mercedes S 450 CDI
Fuel Economy / Emissions
Audi A8 4.2 TDI
Mercedes S 450 CDI
Fuel Economy
39 mpg
combined
31 mpg
Audi A8 4.2 TDI
39 mpg
31 mpg
Mercedes S 450 CDI
30 mpg
city
22 mpg
No data
motorway
41 mpg
90 L
Fuel Tank Capacity
90 L
777 mi
Range
615 mi
Audi A8 4.2 TDI
777 mi
615 mi
Mercedes S 450 CDI
Environmental Impact
148.1 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).
187.2 kWh
Audi A8 4.2 TDI
148.1 kWh
187.2 kWh
Mercedes S 450 CDI
Euro 6b (NEFZ)
Emission Standard
Euro 4 III
189 g/km (NEFZ)
CO2 Emissions
240 g/km (NEFZ)
Practical Convenience
Audi A8 4.2 TDI
Mercedes S 450 CDI
4
Doors
4
5
No. of Seats
5
590 kg
Maximum Payload
600 kg
490 L
Boot Capacity
560 L












No data
Boot Capacity (Seats Down)
No data