The Comparative Analysis :
Audi A8 4.2 TDI quattro tiptronic (10 - 13) vs. Mercedes S 250 CDI BlueEFFICIENCY 7G-TRONIC PLUS (11 - 13)
€ 92,700

€ 71,900

€ 92,700
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 71,900
ⓘ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 1.6 inches longer, 3.1 inches wider and an inch lower than the Mercedes S 250 CDI BlueEFFICIENCY.
Audi A8 4.2 TDI
Mercedes S 250 CDI BlueEFFICIENCY
57.5
76.7
83.1
58.5
73.7
83.5
76.7 in
Width
73.7 in
83.1 in
Width Incl. Mirrors
83.5 in
57.5 in
Height
58.5 in
117.8
202.2
119.5
200.6
202.2 in
Length
200.6 in
117.8 in
Wheelbase
119.5 in
Vehicle Weight
Audi A8 4.2 TDI
Mercedes S 250 CDI BlueEFFICIENCY
4564 lb
Curb Weight
4343 lb
5864 lb
Gross Vehicle
Weight
Weight
5622 lb

Weight Difference:
220 lb
4.82 %

General
Audi A8 4.2 TDI
Mercedes S 250 CDI BlueEFFICIENCY
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 250 CDI BlueEFFICIENCY
V8 diesel engine with two turbochargers (biturbo)
Engine Type
Straight-four diesel engine with two turbochargers (biturbo)
Engine Series
Mercedes-Benz OM 651
CDSB
Engine Code
OM 651.961

4
Valves
4
8
Cylinders
4
4.1 L / 201 cu in
Displacement
2.1 L / 103 cu in
346 hp
at 4000 rpm
Power
201 hp
at 4200 rpm
Audi A8 4.2 TDI
346 hp
201 hp
Mercedes S 250 CDI BlueEFFICIENCY
590 lb‑ft
at 1750 rpm
Max. Torque
369 lb‑ft
at 1600 rpm
Audi A8 4.2 TDI
590 lb‑ft
369 lb‑ft
Mercedes S 250 CDI BlueEFFICIENCY
Performance
Audi A8 4.2 TDI
Mercedes S 250 CDI BlueEFFICIENCY
155 mph
Maximum Speed
149 mph
5.5 sec
Acceleration 0 to 62 mph
8.2 sec
62 mph
62
mph
mph
249 ft
0.000 sec

Audi A8 4.2 TDI
62 mph
62
mph
mph
374 ft
0.000 sec

Mercedes S 250 CDI BlueEFFICIENCY
▶ REPLAY
13.19 lb/hp
Weight-to-Power Ratio
21.61 lb/hp
Audi A8 4.2 TDI
13.19 lb/hp
21.61 lb/hp
Mercedes S 250 CDI BlueEFFICIENCY
Fuel Economy / Emissions
Audi A8 4.2 TDI
Mercedes S 250 CDI BlueEFFICIENCY
Fuel Economy
32 mpg
combined
41 mpg
Audi A8 4.2 TDI
32 mpg
41 mpg
Mercedes S 250 CDI BlueEFFICIENCY
25 mpg
city
34 mpg
No data
highway
47 mpg
23.8 gal
Fuel Tank Capacity
21.9 gal
756 mi
Range
905 mi
Audi A8 4.2 TDI
756 mi
905 mi
Mercedes S 250 CDI BlueEFFICIENCY
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).
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).
117.3 kWh
Audi A8 4.2 TDI
152.2 kWh
117.3 kWh
Mercedes S 250 CDI BlueEFFICIENCY
Euro 5
Emission Standard
Euro 5
314 g/mi (NEFZ)
CO2 Emissions
240 g/mi (NEFZ)
Practical Convenience
Audi A8 4.2 TDI
Mercedes S 250 CDI BlueEFFICIENCY
4
Doors
4
5
No. of Seats
5
1301 lb
Maximum Payload
1279 lb
14.4 cu ft
Trunk Volume
15.9 cu ft










No data
Cargo Volume (Seats Down)
No data