Car comparison

AUDI A6 Avant (C9) 2.0 TFSIvsAUDI A6 allroad (C8) 40 TDI

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

New comparison

AUDI A6 Avant (C9)

2.0 TFSI

204 hp1984 ccGasolineFWDAutomaticTurbochargedWagon / estate2025-present
VS

AUDI A6 allroad (C8)

40 TDI

204 hp1968 ccDieselAWDAutomaticTurbochargedWagon / estate2020-2025

Comparison overview

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

Best choices

AUDI A6 allroad (C8) 40 TDI

  • Quickest 0-100 km/h
    7.8 s
  • Highest torque
    400 Nm
    295 lb-ft
  • Lowest combined fuel consumption
    6.5 L/100 km
    36.2 mpg US
    43.5 mpg UK
  • Best estimated range
    969 km
    602 mi
  • Largest trunk
    565 L
  • Best overall score
    63/100
  • Best performance score
    51/100
  • Best economy score
    89/100
  • Best practicality score
    87/100

AUDI A6 Avant (C9) 2.0 TFSI

  • Fastest top speed
    240 km/h
    149 mph
  • Most powerful
    204 hp
    152 kW
  • Lightest
    1,790 kg
    3,946 lb
  • Best power-to-weight
    114 hp/t
    85 kW/t
    8.8 kg/hp

Specification comparison

Specification comparison
ModelAUDIA6 Avant (C9)2.0 TFSIAUDIA6 allroad (C8)40 TDI
Power
204hp152kW
204hp152kW
Torque
340Nm251lb-ft
400Nm295lb-ft
Curb weight
1,790kg3,946lb
1,825kg4,023lb
Gross weight
2,415kg5,324lb
2,500kg5,512lb
Top speed
240 km/h
149 mph
237 km/h
147 mph
To 99% top speed
84.7s99% target: 238 km/h / 148 mph
Calculated
83.9s99% target: 235 km/h / 146 mph
Calculated
0-100 km/h
8.3s
7.8s
0-200 km/h
30.5s
Calculated
30.5s
Calculated
0-60 mph
7.9s
Calculated
7.4s
Calculated
Fuel consumption
8L/100 km29.4mpg US35.3mpg UK
6.5L/100 km36.2mpg US43.5mpg UK
Quarter mile
16.0s
Calculated
15.6s
Calculated
Power-to-weight
114hp/t85kW/t52hp/1000 lb
Calculated
112hp/t83kW/t51hp/1000 lb
Calculated
Torque-to-weight
190Nm/t127lb-ft/ton
Calculated
219Nm/t147lb-ft/ton
Calculated
Estimated range
763km474mi
Calculated
969km602mi
Calculated
Displacement
1,984cc121cu in
1,968cc120cu in
Length
4,999mm197in
4,951mm195in
Width
1,875mm74in
1,902mm75in
Height
1,472mm58in
1,542mm61in
Wheelbase
2,923mm115in
2,925mm115in
Front track
1,631mm64in
1,645mm65in
Rear track
1,616mm64in
1,611mm63in
Ground clearance-
184mm7in
Trunk volume
503L
565L
Max trunk volume
1,534L
1,680L
Doors
5
5
Seats
5
5
Fuel tank
61L
63L

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 (C9) 2.0 TFSIAUDI A6 allroad (C8) 40 TDIPowerTorque
  • AUDI A6 Avant (C9) 2.0 TFSI: Power / Torque
  • AUDI A6 allroad (C8) 40 TDI: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
AUDIA6 Avant (C9)2.0 TFSI4,300-6,000 rpm2,000-4,000 rpm6,250 rpm
AUDIA6 allroad (C8)40 TDI3,800-4,200 rpm1,750-3,250 rpm4,450 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAUDIA6 Avant (C9)2.0 TFSIAUDIA6 allroad (C8)40 TDI
Acceleration checkpoints
0-60 mph
0-97 km/h
7.9 s
7.4 s
0-100 km/h
0-62 mph
8.3 s
7.8 s
0-200 km/h
0-124 mph
30.5 s
30.5 s
Top speed
240 km/h
149 mph
237 km/h
147 mph
Drag race simulation
60 ft
18 m
2.8 s
2.7 s
330 ft
101 m
7.2 s
6.9 s
1/8 mile
201 m
10.6 s
10.3 s
1000 ft
305 m
13.6 s
13.2 s
1/4 mile
402 m
16.0 s
15.6 s
Trap speed
1/4 mile
402 m
151 km/h
94 mph
152 km/h
94 mph

Power comparison

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

Chart data table
VehicleValue
AUDIA6 Avant (C9)2.0 TFSI
204 hp
152 kW
AUDIA6 allroad (C8)40 TDI
204 hp
152 kW

Torque comparison

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

Chart data table
VehicleValue
AUDIA6 Avant (C9)2.0 TFSI
340 Nm
251 lb-ft
AUDIA6 allroad (C8)40 TDI
400 Nm
295 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
AUDIA6 Avant (C9)2.0 TFSI
1,790 kg
3,946 lb
AUDIA6 allroad (C8)40 TDI
1,825 kg
4,023 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 (C9)2.0 TFSI
240 km/h
149 mph
AUDIA6 allroad (C8)40 TDI
237 km/h
147 mph

0-100 km/h comparison

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

Chart data table
VehicleValue
AUDIA6 Avant (C9)2.0 TFSI8.3 s
AUDIA6 allroad (C8)40 TDI7.8 s

The biggest 0-100 km/h difference is between AUDI A6 allroad (C8) 40 TDI and AUDI A6 Avant (C9) 2.0 TFSI: 0.5 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 Avant (C9)2.0 TFSI
8.0 L/100 km
29.4 mpg US
35.3 mpg UK
AUDIA6 allroad (C8)40 TDI
6.5 L/100 km
36.2 mpg US
43.5 mpg UK

The biggest fuel consumption difference is between AUDI A6 allroad (C8) 40 TDI and AUDI A6 Avant (C9) 2.0 TFSI: 1.5 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 (C9)2.0 TFSI
114 hp/t
85 kW/t
8.8 kg/hp
AUDIA6 allroad (C8)40 TDI
112 hp/t
83 kW/t
8.9 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
AUDIA6 Avant (C9)2.0 TFSI
763 km
474 mi
AUDIA6 allroad (C8)40 TDI
969 km
602 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
AUDIA6 Avant (C9)2.0 TFSI
204 hp
152 kW
8.3 s
240 km/h
149 mph
AUDIA6 allroad (C8)40 TDI
204 hp
152 kW
7.8 s
237 km/h
147 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 (C9)2.0 TFSI
Power
204 hp
152 kW
0-100 km/h8.3 s
Top speed
240 km/h
149 mph
Doors/seats
5 doors
5 seats
Trunk
503 L
17.8 cu ft
Length
4,999 mm
196.8 in
Height
1,472 mm
58.0 in
AUDIA6 allroad (C8)40 TDI
Power
204 hp
152 kW
0-100 km/h7.8 s
Top speed
237 km/h
147 mph
Doors/seats
5 doors
5 seats
Trunk
565 L
20.0 cu ft
Length
4,951 mm
194.9 in
Height
1,542 mm
60.7 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 (C9)2.0 TFSI
Power
204 hp
152 kW
0-100 km/h8.3 s
Top speed
240 km/h
149 mph
8.0 L/100 km
29.4 mpg US
35.3 mpg UK
AUDIA6 allroad (C8)40 TDI
Power
204 hp
152 kW
0-100 km/h7.8 s
Top speed
237 km/h
147 mph
6.5 L/100 km
36.2 mpg US
43.5 mpg UK

AUDI A6 allroad (C8) 40 TDI 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 (C9)2.0 TFSI
8.0 L/100 km
29.4 mpg US
35.3 mpg UK
8.3 s
AUDIA6 allroad (C8)40 TDI
6.5 L/100 km
36.2 mpg US
43.5 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 Avant (C9)2.0 TFSI
114 hp/t
85 kW/t
8.8 kg/hp
8.0 L/100 km
29.4 mpg US
35.3 mpg UK
AUDIA6 allroad (C8)40 TDI
112 hp/t
83 kW/t
8.9 kg/hp
6.5 L/100 km
36.2 mpg US
43.5 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAUDIA6 Avant (C9)2.0 TFSIAUDIA6 allroad (C8)40 TDI
Power
204 hp
152 kW
204 hp
152 kW
Torque
340 Nm
251 lb-ft
400 Nm
295 lb-ft
Acceleration
8.3 s
7.8 s
Top speed
240 km/h
149 mph
237 km/h
147 mph
Lightness
1,790 kg
3,946 lb
1,825 kg
4,023 lb
Fuel consumption
8.0 L/100 km
29.4 mpg US
35.3 mpg UK
6.5 L/100 km
36.2 mpg US
43.5 mpg UK
Practicality
Doors/seats
5 doors
5 seats
Trunk
503 L
17.8 cu ft
Length
4,999 mm
196.8 in
Height
1,472 mm
58.0 in
Doors/seats
5 doors
5 seats
Trunk
565 L
20.0 cu ft
Length
4,951 mm
194.9 in
Height
1,542 mm
60.7 in
Range score
763 km
474 mi
969 km
602 mi
Trunk score
503 L
17.8 cu ft
565 L
20.0 cu ft
Power-to-weight score
114 hp/t
85 kW/t
8.8 kg/hp
112 hp/t
83 kW/t
8.9 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 (C9) 2.0 TFSIAUDI A6 allroad (C8) 40 TDI
Consumption8 L/100 km29.4 mpg US35.3 mpg UK6.5 L/100 km36.2 mpg US43.5 mpg UK
Cost / 100 km14.00 LC100 km11.38 LC100 km
Cost / 100 mi22.53 LC100 mi18.31 LC100 mi
Annual fuel used1,200 L317 US gal264 UK gal975 L258 US gal214 UK gal
Annual fuel cost2,100 LC/year1,706 LC/year

Head-to-head comparisons

AUDI A6 Avant (C9) 2.0 TFSI

  • Is 35 kg lighter
  • Has 3 km/h (2 mph) higher top speed
  • Has 2 hp/t better power-to-weight

Pros

  • Highest top speed
  • Most powerful
  • Lightest
  • Best power-to-weight ratio

Cons

  • Slowest 0-100 km/h
  • Highest combined fuel consumption
  • Smallest trunk

AUDI A6 allroad (C8) 40 TDI

  • Has 60 Nm more
  • Is 0.5 s quicker from 0-100 km/h
  • Uses 1.5 L/100 km less fuel
  • Has 207 km (128 mi) more estimated range
  • Has 62 L more trunk volume

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest torque
  • Lowest combined fuel consumption
  • Best estimated range
  • Largest trunk

Cons

  • Heaviest
  • Lowest top speed

Choose cars to compare

Brand
Model
Generation
Engine or modification
AUDI A6 Avant (C9) 2.0 TFSI
AUDI A6 allroad (C8) 40 TDI
Compare selected cars
2 vehicles selected

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