Car comparison

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

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

New comparison

AUDI A6 Avant (4F/C6) · Facelift 2008

3.0 TFSI V6

290 hp2995 ccGasolineAWDAutomaticSuperchargedWagon / estate2008-2011
VS

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

R 350 V6

272 hp3498 ccGasolineAWDAutomaticNaturally aspiratedWagon / estate2010-2012

Comparison overview

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

Best choices

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

  • Quickest 0-100 km/h
    6.1 s
  • Fastest top speed
    250 km/h
    155 mph
  • Most powerful
    290 hp
    216 kW
  • Highest torque
    420 Nm
    310 lb-ft
  • Lightest
    1,790 kg
    3,946 lb
  • Best power-to-weight
    162 hp/t
    121 kW/t
    6.2 kg/hp
  • Lowest combined fuel consumption
    9.5 L/100 km
    24.8 mpg US
    29.7 mpg UK
  • Lowest city consumption
    13.3 L/100 km
    17.7 mpg US
    21.2 mpg UK
  • Lowest highway consumption
    7.2 L/100 km
    32.7 mpg US
    39.2 mpg UK
  • Lowest CO2 emissions
    223 g/km
  • Best estimated range
    737 km
    458 mi
  • Largest trunk
    565 L
  • Best overall score
    70/100
  • Best performance score
    62/100
  • Best economy score
    81/100
  • Best practicality score
    87/100

Specification comparison

Specification comparison
ModelAUDIA6 Avant (4F/C6)Facelift 20083.0 TFSI V6Mercedes-BenzR-class (W251)Facelift 2010R 350 V6
Power
290hp216kW
272hp203kW
Torque
420Nm310lb-ft
350Nm258lb-ft
Curb weight
1,790kg3,946lb
2,105kg4,641lb
Gross weight
2,420kg5,335lb
2,840kg6,261lb
Top speed
250 km/h
155 mph
230 km/h
143 mph
To 99% top speed
65.0s99% target: 248 km/h / 154 mph
Calculated
90.8s99% target: 228 km/h / 141 mph
Calculated
0-100 km/h
6.1s
8.3s
0-200 km/h
21.0s
Calculated
35.7s
Calculated
0-60 mph
5.8s
Calculated
7.9s
Calculated
Fuel consumption
9.5L/100 km24.8mpg US29.7mpg UK
11.9L/100 km19.8mpg US23.7mpg UK
Fuel consumption city
13.3L/100 km17.7mpg US21.2mpg UK
16.1L/100 km14.6mpg US17.5mpg UK
Fuel consumption highway
7.2L/100 km32.7mpg US39.2mpg UK
9.5L/100 km24.8mpg US29.7mpg UK
Quarter mile
14.1s
Calculated
16.0s
Calculated
Power-to-weight
162hp/t121kW/t73hp/1000 lb
Calculated
129hp/t96kW/t59hp/1000 lb
Calculated
Torque-to-weight
235Nm/t157lb-ft/ton
Calculated
166Nm/t111lb-ft/ton
Calculated
Estimated range
737km458mi
Calculated
672km418mi
Calculated
Displacement
2,995cc183cu in
3,498cc213cu in
Length
4,927mm194in
4,922mm194in
Width
1,855mm73in
1,922mm76in
Height
1,463mm58in
1,674mm66in
Wheelbase
2,843mm112in
2,980mm117in
Front track
1,612mm63in
1,661mm65in
Rear track
1,618mm64in
1,651mm65in
Trunk volume
565L
550L
Max trunk volume
1,660L
1,950L
Doors
5
5
Seats
5
5
Fuel tank
70L
80L
CO2 emissions
223g/km
279g/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 Avant (4F/C6) Facelift 2008 3.0 TFSI V6Mercedes-Benz R-class (W251) Facelift 2010 R 350 V6PowerTorque
  • AUDI A6 Avant (4F/C6) Facelift 2008 3.0 TFSI V6: Power / Torque
  • Mercedes-Benz R-class (W251) Facelift 2010 R 350 V6: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
AUDIA6 Avant (4F/C6)Facelift 20083.0 TFSI V64,850-6,800 rpm2,500-4,850 rpm7,050 rpm
Mercedes-BenzR-class (W251)Facelift 2010R 350 V66,000 rpm2,400-5,000 rpm6,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAUDIA6 Avant (4F/C6)Facelift 20083.0 TFSI V6Mercedes-BenzR-class (W251)Facelift 2010R 350 V6
Acceleration checkpoints
0-60 mph
0-97 km/h
5.8 s
7.9 s
0-100 km/h
0-62 mph
6.1 s
8.3 s
0-200 km/h
0-124 mph
21.0 s
35.7 s
Top speed
250 km/h
155 mph
230 km/h
143 mph
Drag race simulation
60 ft
18 m
2.5 s
2.7 s
330 ft
101 m
6.3 s
7.0 s
1/8 mile
201 m
9.4 s
10.5 s
1000 ft
305 m
12.0 s
13.5 s
1/4 mile
402 m
14.1 s
16.0 s
Trap speed
1/4 mile
402 m
168 km/h
104 mph
146 km/h
91 mph

Power comparison

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

Chart data table
VehicleValue
AUDIA6 Avant (4F/C6)Facelift 20083.0 TFSI V6
290 hp
216 kW
Mercedes-BenzR-class (W251)Facelift 2010R 350 V6
272 hp
203 kW

AUDI A6 Avant (4F/C6) Facelift 2008 3.0 TFSI V6 has 18 hp more than Mercedes-Benz R-class (W251) Facelift 2010 R 350 V6.

The biggest power difference is between Mercedes-Benz R-class (W251) Facelift 2010 R 350 V6 and AUDI A6 Avant (4F/C6) Facelift 2008 3.0 TFSI V6: 18 hp (13 kW).

Torque comparison

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

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

Curb weight comparison

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

Chart data table
VehicleValue
AUDIA6 Avant (4F/C6)Facelift 20083.0 TFSI V6
1,790 kg
3,946 lb
Mercedes-BenzR-class (W251)Facelift 2010R 350 V6
2,105 kg
4,641 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 Avant (4F/C6)Facelift 20083.0 TFSI V6
250 km/h
155 mph
Mercedes-BenzR-class (W251)Facelift 2010R 350 V6
230 km/h
143 mph

0-100 km/h comparison

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

Chart data table
VehicleValue
AUDIA6 Avant (4F/C6)Facelift 20083.0 TFSI V66.1 s
Mercedes-BenzR-class (W251)Facelift 2010R 350 V68.3 s

The biggest 0-100 km/h difference is between AUDI A6 Avant (4F/C6) Facelift 2008 3.0 TFSI V6 and Mercedes-Benz R-class (W251) Facelift 2010 R 350 V6: 2.2 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 Avant (4F/C6)Facelift 20083.0 TFSI V6
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
Mercedes-BenzR-class (W251)Facelift 2010R 350 V6
11.9 L/100 km
19.8 mpg US
23.7 mpg UK

The biggest fuel consumption difference is between AUDI A6 Avant (4F/C6) Facelift 2008 3.0 TFSI V6 and Mercedes-Benz R-class (W251) Facelift 2010 R 350 V6: 2.4 L/100 km.

Power-to-weight comparison

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

Chart data table
VehicleValue
AUDIA6 Avant (4F/C6)Facelift 20083.0 TFSI V6
162 hp/t
121 kW/t
6.2 kg/hp
Mercedes-BenzR-class (W251)Facelift 2010R 350 V6
129 hp/t
96 kW/t
7.7 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
AUDIA6 Avant (4F/C6)Facelift 20083.0 TFSI V6
737 km
458 mi
Mercedes-BenzR-class (W251)Facelift 2010R 350 V6
672 km
418 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
AUDIA6 Avant (4F/C6)Facelift 20083.0 TFSI V6
290 hp
216 kW
6.1 s
250 km/h
155 mph
Mercedes-BenzR-class (W251)Facelift 2010R 350 V6
272 hp
203 kW
8.3 s
230 km/h
143 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 Avant (4F/C6)Facelift 20083.0 TFSI V6
Power
290 hp
216 kW
0-100 km/h6.1 s
Top speed
250 km/h
155 mph
Doors/seats
5 doors
5 seats
Trunk
565 L
20.0 cu ft
Length
4,927 mm
194.0 in
Height
1,463 mm
57.6 in
Mercedes-BenzR-class (W251)Facelift 2010R 350 V6
Power
272 hp
203 kW
0-100 km/h8.3 s
Top speed
230 km/h
143 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 Avant (4F/C6)Facelift 20083.0 TFSI V6
Power
290 hp
216 kW
0-100 km/h6.1 s
Top speed
250 km/h
155 mph
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
Mercedes-BenzR-class (W251)Facelift 2010R 350 V6
Power
272 hp
203 kW
0-100 km/h8.3 s
Top speed
230 km/h
143 mph
11.9 L/100 km
19.8 mpg US
23.7 mpg UK

AUDI A6 Avant (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 Avant (4F/C6)Facelift 20083.0 TFSI V6
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
6.1 s
Mercedes-BenzR-class (W251)Facelift 2010R 350 V6
11.9 L/100 km
19.8 mpg US
23.7 mpg UK
8.3 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 Avant (4F/C6)Facelift 20083.0 TFSI V6
162 hp/t
121 kW/t
6.2 kg/hp
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
Mercedes-BenzR-class (W251)Facelift 2010R 350 V6
129 hp/t
96 kW/t
7.7 kg/hp
11.9 L/100 km
19.8 mpg US
23.7 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAUDIA6 Avant (4F/C6)Facelift 20083.0 TFSI V6Mercedes-BenzR-class (W251)Facelift 2010R 350 V6
Power
290 hp
216 kW
272 hp
203 kW
Torque
420 Nm
310 lb-ft
350 Nm
258 lb-ft
Acceleration
6.1 s
8.3 s
Top speed
250 km/h
155 mph
230 km/h
143 mph
Lightness
1,790 kg
3,946 lb
2,105 kg
4,641 lb
Fuel consumption
9.5 L/100 km
24.8 mpg US
29.7 mpg UK
11.9 L/100 km
19.8 mpg US
23.7 mpg UK
Practicality
Doors/seats
5 doors
5 seats
Trunk
565 L
20.0 cu ft
Length
4,927 mm
194.0 in
Height
1,463 mm
57.6 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
737 km
458 mi
672 km
418 mi
CO2 score
223 g/km
279 g/km
Trunk score
565 L
20.0 cu ft
550 L
19.4 cu ft
Power-to-weight score
162 hp/t
121 kW/t
6.2 kg/hp
129 hp/t
96 kW/t
7.7 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 Avant (4F/C6) Facelift 2008 3.0 TFSI V6Mercedes-Benz R-class (W251) Facelift 2010 R 350 V6
Consumption9.5 L/100 km24.8 mpg US29.7 mpg UK11.9 L/100 km19.8 mpg US23.7 mpg UK
Cost / 100 km16.63 LC100 km20.83 LC100 km
Cost / 100 mi26.76 LC100 mi33.51 LC100 mi
Annual fuel used1,425 L376 US gal313 UK gal1,785 L472 US gal393 UK gal
Annual fuel cost2,494 LC/year3,124 LC/year

Head-to-head comparisons

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

  • Has 18 hp more
  • Has 70 Nm more
  • Is 315 kg lighter
  • Is 2.2 s quicker from 0-100 km/h
  • Has 20 km/h (12 mph) higher top speed
  • Uses 2.4 L/100 km less fuel
  • Has 33 hp/t better power-to-weight
  • Has 65 km (40 mi) more estimated range
  • Has 15 L more trunk volume
  • Emits 56 g/km less CO2

Pros

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

Choose cars to compare

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