The Comparative Analysis :
Audi Q7 4.2 FSI quattro tiptronic (09 - 10) vs. Mercedes ML 420 CDI 4MATIC 7G-TRONIC (08 - 11)
€ 69,200

€ 72,100

€ 69,200
Base Price ⓘBase price of a new vehicle with standard equipment in Germany at market launch.
€ 72,100
ⓘBase price of a new vehicle with standard equipment in Germany at market launch. Price Info
Vehicle Dimensions
The dimensions of these vehicles differ considerably. The Audi Q7 4.2 FSI is 11.9 inches longer, 2.8 inches wider and 3.1 inches lower than the Mercedes ML 420 CDI.
Audi Q7 4.2 FSI
Mercedes ML 420 CDI
68.4
78.1
85.7
71.5
75.2
83.7
78.1 in
Width
75.2 in
85.7 in
Width Incl. Mirrors
83.7 in
68.4 in
Height
71.5 in
118.2
200.4
114.8
188.5
200.4 in
Length
188.5 in
118.2 in
Wheelbase
114.8 in
Vehicle Weight
Audi Q7 4.2 FSI
Mercedes ML 420 CDI
5104 lb
Curb Weight
5104 lb
6537 lb
Gross Vehicle
Weight
Weight
6504 lb

Weight Difference:
0 lb
0 %

General
Audi Q7 4.2 FSI
Mercedes ML 420 CDI
4L
Generation
W164
Sport Utility Vehicle
Car Body Style
Sport Utility Vehicle
Premium Unleaded
Fuel Type
Diesel

Permanent all-wheel drive (AWD)
Drivetrain
Permanent all-wheel drive (AWD)

6-speed automatic transmission
Transmission
7-speed automatic transmission
Engine
Audi Q7 4.2 FSI
Mercedes ML 420 CDI
V8 gasoline engine (naturally aspirated engine)
Engine Type
V8 diesel engine with turbocharger
Engine Series
Mercedes-Benz OM 629
BAR
Engine Code
OM 629.912

4
Valves
4
8
Cylinders
8
4.2 L / 206 cu in
Displacement
4 L / 196 cu in
345 hp
at 6800 rpm
Power
302 hp
at 3600 rpm
Audi Q7 4.2 FSI
345 hp
302 hp
Mercedes ML 420 CDI
325 lb‑ft
at 3500 rpm
Max. Torque
516 lb‑ft
at 2000 rpm
Audi Q7 4.2 FSI
325 lb‑ft
516 lb‑ft
Mercedes ML 420 CDI
Performance
Audi Q7 4.2 FSI
Mercedes ML 420 CDI
152 mph
Maximum Speed
146 mph
7.4 sec
Acceleration 0 to 62 mph
6.8 sec
62 mph
62
mph
mph
338 ft
0.000 sec

Audi Q7 4.2 FSI
62 mph
62
mph
mph
308 ft
0.000 sec

Mercedes ML 420 CDI
▶ REPLAY
14.79 lb/hp
Weight-to-Power Ratio
16.9 lb/hp
Audi Q7 4.2 FSI
14.79 lb/hp
16.9 lb/hp
Mercedes ML 420 CDI
Fuel Economy / Emissions
Audi Q7 4.2 FSI
Mercedes ML 420 CDI
Fuel Economy
19 mpg
combined
22 mpg
Audi Q7 4.2 FSI
19 mpg
22 mpg
Mercedes ML 420 CDI
13 mpg
city
17 mpg
No data
highway
28 mpg
26.4 gal
Fuel Tank Capacity
25.1 gal
489 mi
Range
557 mi
Audi Q7 4.2 FSI
489 mi
557 mi
Mercedes ML 420 CDI
Environmental Impact
240.6 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).
218.1 kWh
Audi Q7 4.2 FSI
240.6 kWh
218.1 kWh
Mercedes ML 420 CDI
Euro 4 III
Emission Standard
Euro 4 III
489 g/mi (NEFZ)
CO2 Emissions
449 g/mi (NEFZ)
Practical Convenience
Audi Q7 4.2 FSI
Mercedes ML 420 CDI
5
Doors
5
5
No. of Seats
5
1433 lb
Maximum Payload
1400 lb
21.9 cu ft
Trunk Volume
14.2 cu ft











57.6 cu ft
Cargo Volume (Seats Down)
58 cu ft