Car comparison

AUDI A6 allroad (4F/C6) · Facelift 2008 3.0 TFSI V6vsMercedes-Benz R-class (W251) · Facelift 2010 R 350 V6 BlueEFFICIENCY

Compare specs, acceleration, fuel consumption, dimensions, practicality, and estimated running costs side by side.

New comparison

AUDI A6 allroad (4F/C6) · Facelift 2008

3.0 TFSI V6

290 hp2995 ccGasolineAWDAutomaticSuperchargedWagon / estate2008-2011
VS

Mercedes-Benz R-class (W251) · Facelift 2010

R 350 V6 BlueEFFICIENCY

306 hp3498 ccGasolineAWDAutomaticNaturally aspiratedWagon / estate2011-2013

Comparison overview

Use the estimates as comparison hints and verify exact figures before making decisions.

Best choices

AUDI A6 allroad (4F/C6) Facelift 2008 3.0 TFSI V6

  • Quickest 0-100 km/h
    6.3 s
  • Fastest top speed
    250 km/h
    155 mph
  • Highest torque
    420 Nm
    310 lb-ft
  • Lightest
    1,840 kg
    4,057 lb
  • Best power-to-weight
    158 hp/t
    118 kW/t
    6.3 kg/hp
  • Lowest combined fuel consumption
    9.7 L/100 km
    24.2 mpg US
    29.1 mpg UK
  • Lowest city consumption
    13.3 L/100 km
    17.7 mpg US
    21.2 mpg UK
  • Lowest highway consumption
    7.6 L/100 km
    30.9 mpg US
    37.2 mpg UK
  • Best estimated range
    825 km
    512 mi
  • Largest trunk
    565 L
  • Best overall score
    69/100
  • Best performance score
    61/100
  • Best economy score
    81/100
  • Best practicality score
    87/100

Specification comparison

Specification comparison
ModelAUDIA6 allroad (4F/C6)Facelift 20083.0 TFSI V6Mercedes-BenzR-class (W251)Facelift 2010R 350 V6 BlueEFFICIENCY
Power
290hp216kW
306hp228kW
Torque
420Nm310lb-ft
370Nm273lb-ft
Curb weight
1,840kg4,057lb
2,150kg4,740lb
Gross weight
2,470kg5,445lb
2,950kg6,504lb
Top speed
250 km/h
155 mph
245 km/h
152 mph
To 99% top speed
70.1s99% target: 248 km/h / 154 mph
Calculated
91.9s99% target: 243 km/h / 151 mph
Calculated
0-100 km/h
6.3s
7.8s
0-200 km/h
22.2s
Calculated
29.5s
Calculated
0-60 mph
6.0s
Calculated
7.4s
Calculated
Fuel consumption
9.7L/100 km24.2mpg US29.1mpg UK
10.1L/100 km23.3mpg US28.0mpg UK
Fuel consumption city
13.3L/100 km17.7mpg US21.2mpg UK
13.3L/100 km17.7mpg US21.2mpg UK
Fuel consumption highway
7.6L/100 km30.9mpg US37.2mpg UK
8.2L/100 km28.7mpg US34.4mpg UK
Quarter mile
14.3s
Calculated
15.6s
Calculated
Power-to-weight
158hp/t118kW/t71hp/1000 lb
Calculated
142hp/t106kW/t65hp/1000 lb
Calculated
Torque-to-weight
228Nm/t153lb-ft/ton
Calculated
172Nm/t115lb-ft/ton
Calculated
Estimated range
825km512mi
Calculated
792km492mi
Calculated
Displacement
2,995cc183cu in
3,498cc213cu in
Length
4,934mm194in
4,922mm194in
Width
1,862mm73in
1,922mm76in
Height
1,521mm60in
1,674mm66in
Wheelbase
2,833mm112in
2,980mm117in
Front track
1,596mm63in
1,661mm65in
Rear track
1,587mm62in
1,651mm65in
Trunk volume
565L
550L
Max trunk volume
1,660L
1,950L
Doors
5
5
Seats
5
5
Fuel tank
80L
80L
CO2 emissions
225g/km
-

Performance charts

Use the estimates as comparison hints and verify exact figures before making decisions.

Dyno simulation

Estimated stock-style power and torque curves by engine speed.

AUDI A6 allroad (4F/C6) Facelift 2008 3.0 TFSI V6Mercedes-Benz R-class (W251) Facelift 2010 R 350 V6 BlueEFFICIENCYPowerTorque
  • AUDI A6 allroad (4F/C6) Facelift 2008 3.0 TFSI V6: Power / Torque
  • Mercedes-Benz R-class (W251) Facelift 2010 R 350 V6 BlueEFFICIENCY: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
AUDIA6 allroad (4F/C6)Facelift 20083.0 TFSI V64,850-6,800 rpm2,500-4,850 rpm7,050 rpm
Mercedes-BenzR-class (W251)Facelift 2010R 350 V6 BlueEFFICIENCY6,500 rpm3,500-5,250 rpm6,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAUDIA6 allroad (4F/C6)Facelift 20083.0 TFSI V6Mercedes-BenzR-class (W251)Facelift 2010R 350 V6 BlueEFFICIENCY
Acceleration checkpoints
0-60 mph
0-97 km/h
6.0 s
7.4 s
0-100 km/h
0-62 mph
6.3 s
7.8 s
0-200 km/h
0-124 mph
22.2 s
29.5 s
Top speed
250 km/h
155 mph
245 km/h
152 mph
Drag race simulation
60 ft
18 m
2.5 s
2.7 s
330 ft
101 m
6.4 s
6.9 s
1/8 mile
201 m
9.5 s
10.3 s
1000 ft
305 m
12.1 s
13.2 s
1/4 mile
402 m
14.3 s
15.6 s
Trap speed
1/4 mile
402 m
165 km/h
103 mph
152 km/h
94 mph

Power comparison

Bar comparison chart for Power. Higher is better · hp / kW

Chart data table
VehicleValue
AUDIA6 allroad (4F/C6)Facelift 20083.0 TFSI V6
290 hp
216 kW
Mercedes-BenzR-class (W251)Facelift 2010R 350 V6 BlueEFFICIENCY
306 hp
228 kW

Mercedes-Benz R-class (W251) Facelift 2010 R 350 V6 BlueEFFICIENCY has 16 hp more than AUDI A6 allroad (4F/C6) Facelift 2008 3.0 TFSI V6.

The biggest power difference is between AUDI A6 allroad (4F/C6) Facelift 2008 3.0 TFSI V6 and Mercedes-Benz R-class (W251) Facelift 2010 R 350 V6 BlueEFFICIENCY: 16 hp (12 kW).

Torque comparison

Bar comparison chart for Torque. Higher is better · Nm / lb-ft

Chart data table
VehicleValue
AUDIA6 allroad (4F/C6)Facelift 20083.0 TFSI V6
420 Nm
310 lb-ft
Mercedes-BenzR-class (W251)Facelift 2010R 350 V6 BlueEFFICIENCY
370 Nm
273 lb-ft

Curb weight comparison

Bar comparison chart for Curb weight. Lower is better · kg / lb

Chart data table
VehicleValue
AUDIA6 allroad (4F/C6)Facelift 20083.0 TFSI V6
1,840 kg
4,057 lb
Mercedes-BenzR-class (W251)Facelift 2010R 350 V6 BlueEFFICIENCY
2,150 kg
4,740 lb

Top speed without limiter comparison

Bar comparison chart for Top speed without limiter. Higher is better · km/h / mph

Chart data table
VehicleValue
AUDIA6 allroad (4F/C6)Facelift 20083.0 TFSI V6
250 km/h
155 mph
Mercedes-BenzR-class (W251)Facelift 2010R 350 V6 BlueEFFICIENCY
245 km/h
152 mph

0-100 km/h comparison

Bar comparison chart for 0-100 km/h. Lower is better · seconds

Chart data table
VehicleValue
AUDIA6 allroad (4F/C6)Facelift 20083.0 TFSI V66.3 s
Mercedes-BenzR-class (W251)Facelift 2010R 350 V6 BlueEFFICIENCY7.8 s

Although Mercedes-Benz R-class (W251) Facelift 2010 R 350 V6 BlueEFFICIENCY has more power, AUDI A6 allroad (4F/C6) Facelift 2008 3.0 TFSI V6 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between AUDI A6 allroad (4F/C6) Facelift 2008 3.0 TFSI V6 and Mercedes-Benz R-class (W251) Facelift 2010 R 350 V6 BlueEFFICIENCY: 1.5 s.

Fuel consumption comparison

Bar comparison chart for Fuel consumption. Lower is better · L/100 km / mpg US / mpg UK

Chart data table
VehicleValue
AUDIA6 allroad (4F/C6)Facelift 20083.0 TFSI V6
9.7 L/100 km
24.2 mpg US
29.1 mpg UK
Mercedes-BenzR-class (W251)Facelift 2010R 350 V6 BlueEFFICIENCY
10.1 L/100 km
23.3 mpg US
28.0 mpg UK

Power-to-weight comparison

Bar comparison chart for Power-to-weight. Higher is better · hp/t / kW/t

Chart data table
VehicleValue
AUDIA6 allroad (4F/C6)Facelift 20083.0 TFSI V6
158 hp/t
118 kW/t
6.3 kg/hp
Mercedes-BenzR-class (W251)Facelift 2010R 350 V6 BlueEFFICIENCY
142 hp/t
106 kW/t
7.0 kg/hp

Estimated range comparison

Bar comparison chart for Estimated range. Higher is better · km / mi

Chart data table
VehicleValue
AUDIA6 allroad (4F/C6)Facelift 20083.0 TFSI V6
825 km
512 mi
Mercedes-BenzR-class (W251)Facelift 2010R 350 V6 BlueEFFICIENCY
792 km
492 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
AUDIA6 allroad (4F/C6)Facelift 20083.0 TFSI V6
290 hp
216 kW
6.3 s
250 km/h
155 mph
Mercedes-BenzR-class (W251)Facelift 2010R 350 V6 BlueEFFICIENCY
306 hp
228 kW
7.8 s
245 km/h
152 mph

Most attractive quadrant

Scatter chart with performance score on the X axis and practicality score on the Y axis.

Chart data table
VehiclePerformance scorePracticality score
AUDIA6 allroad (4F/C6)Facelift 20083.0 TFSI V6
Power
290 hp
216 kW
0-100 km/h6.3 s
Top speed
250 km/h
155 mph
Doors/seats
5 doors
5 seats
Trunk
565 L
20.0 cu ft
Length
4,934 mm
194.3 in
Height
1,521 mm
59.9 in
Mercedes-BenzR-class (W251)Facelift 2010R 350 V6 BlueEFFICIENCY
Power
306 hp
228 kW
0-100 km/h7.8 s
Top speed
245 km/h
152 mph
Doors/seats
5 doors
5 seats
Trunk
550 L
19.4 cu ft
Length
4,922 mm
193.8 in
Height
1,674 mm
65.9 in

Performance vs fuel economy

Cars closer to the top-right corner combine stronger performance with better fuel economy scores.

Performance vs fuel economy data table
VehiclePerformance scoreFuel economy score
AUDIA6 allroad (4F/C6)Facelift 20083.0 TFSI V6
Power
290 hp
216 kW
0-100 km/h6.3 s
Top speed
250 km/h
155 mph
9.7 L/100 km
24.2 mpg US
29.1 mpg UK
Mercedes-BenzR-class (W251)Facelift 2010R 350 V6 BlueEFFICIENCY
Power
306 hp
228 kW
0-100 km/h7.8 s
Top speed
245 km/h
152 mph
10.1 L/100 km
23.3 mpg US
28.0 mpg UK

AUDI A6 allroad (4F/C6) Facelift 2008 3.0 TFSI V6 is closest to the top-right balance target for performance and fuel economy.

Acceleration vs fuel consumption

Cars closer to the lower-left corner offer a better mix of quick acceleration and low fuel consumption.

Acceleration vs fuel consumption data table
VehicleFuel consumption, L/100 km0-100 km/h, s
AUDIA6 allroad (4F/C6)Facelift 20083.0 TFSI V6
9.7 L/100 km
24.2 mpg US
29.1 mpg UK
6.3 s
Mercedes-BenzR-class (W251)Facelift 2010R 350 V6 BlueEFFICIENCY
10.1 L/100 km
23.3 mpg US
28.0 mpg UK
7.8 s

Power-to-weight vs fuel consumption

The shaded area favors higher power-to-weight with lower combined fuel consumption.

Power-to-weight vs fuel consumption data table
VehiclePower-to-weight, hp/tFuel consumption, L/100 km
AUDIA6 allroad (4F/C6)Facelift 20083.0 TFSI V6
158 hp/t
118 kW/t
6.3 kg/hp
9.7 L/100 km
24.2 mpg US
29.1 mpg UK
Mercedes-BenzR-class (W251)Facelift 2010R 350 V6 BlueEFFICIENCY
142 hp/t
106 kW/t
7.0 kg/hp
10.1 L/100 km
23.3 mpg US
28.0 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAUDIA6 allroad (4F/C6)Facelift 20083.0 TFSI V6Mercedes-BenzR-class (W251)Facelift 2010R 350 V6 BlueEFFICIENCY
Power
290 hp
216 kW
306 hp
228 kW
Torque
420 Nm
310 lb-ft
370 Nm
273 lb-ft
Acceleration
6.3 s
7.8 s
Top speed
250 km/h
155 mph
245 km/h
152 mph
Lightness
1,840 kg
4,057 lb
2,150 kg
4,740 lb
Fuel consumption
9.7 L/100 km
24.2 mpg US
29.1 mpg UK
10.1 L/100 km
23.3 mpg US
28.0 mpg UK
Practicality
Doors/seats
5 doors
5 seats
Trunk
565 L
20.0 cu ft
Length
4,934 mm
194.3 in
Height
1,521 mm
59.9 in
Doors/seats
5 doors
5 seats
Trunk
550 L
19.4 cu ft
Length
4,922 mm
193.8 in
Height
1,674 mm
65.9 in
Range score
825 km
512 mi
792 km
492 mi
CO2 score
225 g/km
-
Trunk score
565 L
20.0 cu ft
550 L
19.4 cu ft
Power-to-weight score
158 hp/t
118 kW/t
6.3 kg/hp
142 hp/t
106 kW/t
7.0 kg/hp
Overall
Fixed score
Fixed score

Fuel cost and annual usage

Estimate running costs from combined consumption, your annual distance, and the fuel price in your local currency.

Enter the fuel price in your local currency, for example €/L, $/gal, £/L or any other local currency.

LC = Local Currency

Fuel cost and annual usage
VehicleAUDI A6 allroad (4F/C6) Facelift 2008 3.0 TFSI V6Mercedes-Benz R-class (W251) Facelift 2010 R 350 V6 BlueEFFICIENCY
Consumption9.7 L/100 km24.2 mpg US29.1 mpg UK10.1 L/100 km23.3 mpg US28 mpg UK
Cost / 100 km16.97 LC100 km17.68 LC100 km
Cost / 100 mi27.32 LC100 mi28.45 LC100 mi
Annual fuel used1,455 L384 US gal320 UK gal1,515 L400 US gal333 UK gal
Annual fuel cost2,546 LC/year2,651 LC/year

Head-to-head comparisons

AUDI A6 allroad (4F/C6) Facelift 2008 3.0 TFSI V6

  • Has 50 Nm more
  • Is 310 kg lighter
  • Is 1.5 s quicker from 0-100 km/h
  • Has 5 km/h (3 mph) higher top speed
  • Uses 0.4 L/100 km less fuel
  • Has 15 hp/t better power-to-weight
  • Has 33 km (20 mi) more estimated range
  • Has 15 L more trunk volume

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Highest torque
  • Lightest
  • Lowest combined fuel consumption
  • Best power-to-weight ratio
  • Best estimated range
  • Largest trunk

Cons

  • Lowest power

Choose cars to compare

Brand
Model
Generation
Engine or modification
AUDI A6 allroad (4F/C6) 3.0 TFSI V6
Mercedes-Benz R-class (W251) R 350 V6 BlueEFFICIENCY
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