Car comparison

AUDI A6 Avant (4G/C7) 3.0 TDI V6vsMercedes-Benz R-class (W251) · Facelift 2010 R 350 CDI V6

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

New comparison

AUDI A6 Avant (4G/C7)

3.0 TDI V6

245 hp2967 ccDieselAWDAutomaticTurbochargedWagon / estate2011-2014
VS

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

R 350 CDI V6

265 hp2987 ccDieselAWDAutomaticTurbochargedWagon / estate2010-2014

Comparison overview

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

Best choices

AUDI A6 Avant (4G/C7) 3.0 TDI V6

  • Quickest 0-100 km/h
    6.3 s
  • Fastest top speed
    243 km/h
    151 mph
  • Lightest
    1,790 kg
    3,946 lb
  • Best power-to-weight
    137 hp/t
    102 kW/t
    7.3 kg/hp
  • Lowest combined fuel consumption
    5.9 L/100 km
    39.9 mpg US
    47.9 mpg UK
  • Lowest city consumption
    7.2 L/100 km
    32.7 mpg US
    39.2 mpg UK
  • Lowest highway consumption
    5.2 L/100 km
    45.2 mpg US
    54.3 mpg UK
  • Lowest CO2 emissions
    156 g/km
  • Best estimated range
    1,271 km
    790 mi
  • Largest trunk
    565 L
  • Best overall score
    71/100
  • Best performance score
    63/100
  • Best economy score
    91/100
  • Best practicality score
    87/100

Specification comparison

Specification comparison
ModelAUDIA6 Avant (4G/C7)3.0 TDI V6Mercedes-BenzR-class (W251)Facelift 2010R 350 CDI V6
Power
245hp183kW
265hp198kW
Torque
580Nm428lb-ft
620Nm457lb-ft
Curb weight
1,790kg3,946lb
2,175kg4,795lb
Gross weight
2,420kg5,335lb
2,880kg6,349lb
Top speed
243 km/h
151 mph
235 km/h
146 mph
To 99% top speed
62.8s99% target: 241 km/h / 149 mph
Calculated
87.8s99% target: 233 km/h / 145 mph
Calculated
0-100 km/h
6.3s
7.6s
0-200 km/h
22.2s
Calculated
31.6s
Calculated
0-60 mph
6.0s
Calculated
7.2s
Calculated
Fuel consumption
5.9L/100 km39.9mpg US47.9mpg UK
8.5L/100 km27.7mpg US33.2mpg UK
Fuel consumption city
7.2L/100 km32.7mpg US39.2mpg UK
11L/100 km21.4mpg US25.7mpg UK
Fuel consumption highway
5.2L/100 km45.2mpg US54.3mpg UK
7L/100 km33.6mpg US40.4mpg UK
Quarter mile
14.3s
Calculated
15.5s
Calculated
Power-to-weight
137hp/t102kW/t62hp/1000 lb
Calculated
122hp/t91kW/t55hp/1000 lb
Calculated
Torque-to-weight
324Nm/t217lb-ft/ton
Calculated
285Nm/t191lb-ft/ton
Calculated
Estimated range
1,271km790mi
Calculated
941km585mi
Calculated
Displacement
2,967cc181cu in
2,987cc182cu in
Length
4,926mm194in
4,922mm194in
Width
1,874mm74in
1,922mm76in
Height
1,468mm58in
1,674mm66in
Wheelbase
2,912mm115in
2,980mm117in
Front track
1,627mm64in
1,661mm65in
Rear track
1,618mm64in
1,651mm65in
Ground clearance
117mm5in
-
Trunk volume
565L
550L
Max trunk volume
1,680L
1,950L
Doors
5
5
Seats
5
5
Fuel tank
75L
80L
CO2 emissions
156g/km
223g/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 (4G/C7) 3.0 TDI V6Mercedes-Benz R-class (W251) Facelift 2010 R 350 CDI V6PowerTorque
  • AUDI A6 Avant (4G/C7) 3.0 TDI V6: Power / Torque
  • Mercedes-Benz R-class (W251) Facelift 2010 R 350 CDI V6: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
AUDIA6 Avant (4G/C7)3.0 TDI V64,000-4,500 rpm1,750-2,500 rpm4,750 rpm
Mercedes-BenzR-class (W251)Facelift 2010R 350 CDI V63,800 rpm1,600-2,400 rpm4,050 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAUDIA6 Avant (4G/C7)3.0 TDI V6Mercedes-BenzR-class (W251)Facelift 2010R 350 CDI V6
Acceleration checkpoints
0-60 mph
0-97 km/h
6.0 s
7.2 s
0-100 km/h
0-62 mph
6.3 s
7.6 s
0-200 km/h
0-124 mph
22.2 s
31.6 s
Top speed
243 km/h
151 mph
235 km/h
146 mph
Drag race simulation
60 ft
18 m
2.5 s
2.6 s
330 ft
101 m
6.4 s
6.8 s
1/8 mile
201 m
9.5 s
10.1 s
1000 ft
305 m
12.1 s
13.0 s
1/4 mile
402 m
14.3 s
15.5 s
Trap speed
1/4 mile
402 m
166 km/h
103 mph
151 km/h
94 mph

Power comparison

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

Chart data table
VehicleValue
AUDIA6 Avant (4G/C7)3.0 TDI V6
245 hp
183 kW
Mercedes-BenzR-class (W251)Facelift 2010R 350 CDI V6
265 hp
198 kW

Mercedes-Benz R-class (W251) Facelift 2010 R 350 CDI V6 has 20 hp more than AUDI A6 Avant (4G/C7) 3.0 TDI V6.

The biggest power difference is between AUDI A6 Avant (4G/C7) 3.0 TDI V6 and Mercedes-Benz R-class (W251) Facelift 2010 R 350 CDI V6: 20 hp (15 kW).

Torque comparison

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

Chart data table
VehicleValue
AUDIA6 Avant (4G/C7)3.0 TDI V6
580 Nm
428 lb-ft
Mercedes-BenzR-class (W251)Facelift 2010R 350 CDI V6
620 Nm
457 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
AUDIA6 Avant (4G/C7)3.0 TDI V6
1,790 kg
3,946 lb
Mercedes-BenzR-class (W251)Facelift 2010R 350 CDI V6
2,175 kg
4,795 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 (4G/C7)3.0 TDI V6
243 km/h
151 mph
Mercedes-BenzR-class (W251)Facelift 2010R 350 CDI V6
235 km/h
146 mph

0-100 km/h comparison

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

Chart data table
VehicleValue
AUDIA6 Avant (4G/C7)3.0 TDI V66.3 s
Mercedes-BenzR-class (W251)Facelift 2010R 350 CDI V67.6 s

Although Mercedes-Benz R-class (W251) Facelift 2010 R 350 CDI V6 has more power, AUDI A6 Avant (4G/C7) 3.0 TDI V6 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between AUDI A6 Avant (4G/C7) 3.0 TDI V6 and Mercedes-Benz R-class (W251) Facelift 2010 R 350 CDI V6: 1.3 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 (4G/C7)3.0 TDI V6
5.9 L/100 km
39.9 mpg US
47.9 mpg UK
Mercedes-BenzR-class (W251)Facelift 2010R 350 CDI V6
8.5 L/100 km
27.7 mpg US
33.2 mpg UK

The biggest fuel consumption difference is between AUDI A6 Avant (4G/C7) 3.0 TDI V6 and Mercedes-Benz R-class (W251) Facelift 2010 R 350 CDI V6: 2.6 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 (4G/C7)3.0 TDI V6
137 hp/t
102 kW/t
7.3 kg/hp
Mercedes-BenzR-class (W251)Facelift 2010R 350 CDI V6
122 hp/t
91 kW/t
8.2 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
AUDIA6 Avant (4G/C7)3.0 TDI V6
1,271 km
790 mi
Mercedes-BenzR-class (W251)Facelift 2010R 350 CDI V6
941 km
585 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
AUDIA6 Avant (4G/C7)3.0 TDI V6
245 hp
183 kW
6.3 s
243 km/h
151 mph
Mercedes-BenzR-class (W251)Facelift 2010R 350 CDI V6
265 hp
198 kW
7.6 s
235 km/h
146 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 (4G/C7)3.0 TDI V6
Power
245 hp
183 kW
0-100 km/h6.3 s
Top speed
243 km/h
151 mph
Doors/seats
5 doors
5 seats
Trunk
565 L
20.0 cu ft
Length
4,926 mm
193.9 in
Height
1,468 mm
57.8 in
Mercedes-BenzR-class (W251)Facelift 2010R 350 CDI V6
Power
265 hp
198 kW
0-100 km/h7.6 s
Top speed
235 km/h
146 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 (4G/C7)3.0 TDI V6
Power
245 hp
183 kW
0-100 km/h6.3 s
Top speed
243 km/h
151 mph
5.9 L/100 km
39.9 mpg US
47.9 mpg UK
Mercedes-BenzR-class (W251)Facelift 2010R 350 CDI V6
Power
265 hp
198 kW
0-100 km/h7.6 s
Top speed
235 km/h
146 mph
8.5 L/100 km
27.7 mpg US
33.2 mpg UK

AUDI A6 Avant (4G/C7) 3.0 TDI 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 (4G/C7)3.0 TDI V6
5.9 L/100 km
39.9 mpg US
47.9 mpg UK
6.3 s
Mercedes-BenzR-class (W251)Facelift 2010R 350 CDI V6
8.5 L/100 km
27.7 mpg US
33.2 mpg UK
7.6 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 (4G/C7)3.0 TDI V6
137 hp/t
102 kW/t
7.3 kg/hp
5.9 L/100 km
39.9 mpg US
47.9 mpg UK
Mercedes-BenzR-class (W251)Facelift 2010R 350 CDI V6
122 hp/t
91 kW/t
8.2 kg/hp
8.5 L/100 km
27.7 mpg US
33.2 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAUDIA6 Avant (4G/C7)3.0 TDI V6Mercedes-BenzR-class (W251)Facelift 2010R 350 CDI V6
Power
245 hp
183 kW
265 hp
198 kW
Torque
580 Nm
428 lb-ft
620 Nm
457 lb-ft
Acceleration
6.3 s
7.6 s
Top speed
243 km/h
151 mph
235 km/h
146 mph
Lightness
1,790 kg
3,946 lb
2,175 kg
4,795 lb
Fuel consumption
5.9 L/100 km
39.9 mpg US
47.9 mpg UK
8.5 L/100 km
27.7 mpg US
33.2 mpg UK
Practicality
Doors/seats
5 doors
5 seats
Trunk
565 L
20.0 cu ft
Length
4,926 mm
193.9 in
Height
1,468 mm
57.8 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
1,271 km
790 mi
941 km
585 mi
CO2 score
156 g/km
223 g/km
Trunk score
565 L
20.0 cu ft
550 L
19.4 cu ft
Power-to-weight score
137 hp/t
102 kW/t
7.3 kg/hp
122 hp/t
91 kW/t
8.2 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 (4G/C7) 3.0 TDI V6Mercedes-Benz R-class (W251) Facelift 2010 R 350 CDI V6
Consumption5.9 L/100 km39.9 mpg US47.9 mpg UK8.5 L/100 km27.7 mpg US33.2 mpg UK
Cost / 100 km10.33 LC100 km14.88 LC100 km
Cost / 100 mi16.62 LC100 mi23.94 LC100 mi
Annual fuel used885 L234 US gal195 UK gal1,275 L337 US gal280 UK gal
Annual fuel cost1,549 LC/year2,231 LC/year

Head-to-head comparisons

AUDI A6 Avant (4G/C7) 3.0 TDI V6

  • Is 385 kg lighter
  • Is 1.3 s quicker from 0-100 km/h
  • Has 8 km/h (5 mph) higher top speed
  • Uses 2.6 L/100 km less fuel
  • Has 15 hp/t better power-to-weight
  • Has 330 km (205 mi) more estimated range
  • Has 15 L more trunk volume
  • Emits 67 g/km less CO2

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • 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 Avant (4G/C7) 3.0 TDI V6
Mercedes-Benz R-class (W251) R 350 CDI V6
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2 vehicles selected

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