Car comparison

AUDI A6 Avant (C8) 55 TFSIvsAUDI A6 Avant (C9) 3.0 TDI V6

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

New comparison

AUDI A6 Avant (C8)

55 TFSI

340 hp2995 ccGasolineAWDAutomaticTurbochargedWagon / estate2020-2023
VS

AUDI A6 Avant (C9)

3.0 TDI V6

299 hp2967 ccDieselAWDAutomaticTurbochargedWagon / estate2025-present

Comparison overview

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

Best choices

AUDI A6 Avant (C8) 55 TFSI

  • Quickest 0-100 km/h
    5.3 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    340 hp
    254 kW
  • Lightest
    1,835 kg
    4,045 lb
  • Best power-to-weight
    185 hp/t
    138 kW/t
    5.4 kg/hp
  • Largest trunk
    565 L
  • Best overall score
    75/100
  • Best performance score
    69/100
  • Best practicality score
    87/100

AUDI A6 Avant (C9) 3.0 TDI V6

  • Highest torque
    580 Nm
    428 lb-ft
  • Lowest combined fuel consumption
    6.3 L/100 km
    37.3 mpg US
    44.8 mpg UK
  • Best estimated range
    952 km
    592 mi
  • Best economy score
    90/100

Specification comparison

Specification comparison
ModelAUDIA6 Avant (C8)55 TFSIAUDIA6 Avant (C9)3.0 TDI V6
Power
340hp254kW
299hp223kW
Torque
500Nm369lb-ft
580Nm428lb-ft
Curb weight
1,835kg4,045lb
2,080kg4,586lb
Gross weight
2,480kg5,467lb
2,710kg5,975lb
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
54.9s99% target: 257 km/h / 160 mph
Calculated
58.6s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
5.3s
5.3s
0-200 km/h
16.7s
Calculated
17.3s
Calculated
0-60 mph
5.1s
Calculated
5.1s
Calculated
Fuel consumption
7.4L/100 km31.8mpg US38.2mpg UK
6.3L/100 km37.3mpg US44.8mpg UK
Fuel consumption city
9.7L/100 km24.2mpg US29.1mpg UK
-
Fuel consumption highway
6.1L/100 km38.6mpg US46.3mpg UK
-
Quarter mile
13.3s
Calculated
13.3s
Calculated
Power-to-weight
185hp/t138kW/t84hp/1000 lb
Calculated
144hp/t107kW/t65hp/1000 lb
Calculated
Torque-to-weight
272Nm/t182lb-ft/ton
Calculated
279Nm/t187lb-ft/ton
Calculated
Estimated range
851km529mi
Calculated
952km592mi
Calculated
Displacement
2,995cc183cu in
2,967cc181cu in
Length
4,939mm194in
4,999mm197in
Width
1,886mm74in
1,875mm74in
Height
1,467mm58in
1,452mm57in
Wheelbase
2,924mm115in
2,923mm115in
Front track
1,630mm64in
1,626mm64in
Rear track
1,617mm64in
1,610mm63in
Trunk volume
565L
466L
Max trunk volume-
1,497L
Doors
5
5
Seats
5
5
Fuel tank
63L
60L
CO2 emissions
169g/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 (C8) 55 TFSIAUDI A6 Avant (C9) 3.0 TDI V6PowerTorque
  • AUDI A6 Avant (C8) 55 TFSI: Power / Torque
  • AUDI A6 Avant (C9) 3.0 TDI V6: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
AUDIA6 Avant (C8)55 TFSI5,000-6,400 rpm1,370-4,500 rpm6,650 rpm
AUDIA6 Avant (C9)3.0 TDI V63,620-3,750 rpm1,500-3,620 rpm4,000 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAUDIA6 Avant (C8)55 TFSIAUDIA6 Avant (C9)3.0 TDI V6
Acceleration checkpoints
0-60 mph
0-97 km/h
5.1 s
5.1 s
0-100 km/h
0-62 mph
5.3 s
5.3 s
0-200 km/h
0-124 mph
16.7 s
17.3 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Limited
Drag race simulation
60 ft
18 m
2.4 s
2.3 s
330 ft
101 m
6.0 s
5.9 s
1/8 mile
201 m
8.8 s
8.8 s
1000 ft
305 m
11.3 s
11.3 s
1/4 mile
402 m
13.3 s
13.3 s
Trap speed
1/4 mile
402 m
180 km/h
112 mph
178 km/h
110 mph

Power comparison

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

Chart data table
VehicleValue
AUDIA6 Avant (C8)55 TFSI
340 hp
254 kW
AUDIA6 Avant (C9)3.0 TDI V6
299 hp
223 kW

AUDI A6 Avant (C8) 55 TFSI has 41 hp more than AUDI A6 Avant (C9) 3.0 TDI V6.

The biggest power difference is between AUDI A6 Avant (C9) 3.0 TDI V6 and AUDI A6 Avant (C8) 55 TFSI: 41 hp (31 kW).

Torque comparison

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

Chart data table
VehicleValue
AUDIA6 Avant (C8)55 TFSI
500 Nm
369 lb-ft
AUDIA6 Avant (C9)3.0 TDI V6
580 Nm
428 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
AUDIA6 Avant (C8)55 TFSI
1,835 kg
4,045 lb
AUDIA6 Avant (C9)3.0 TDI V6
2,080 kg
4,586 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 (C8)55 TFSI
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
AUDIA6 Avant (C9)3.0 TDI V6
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph

0-100 km/h comparison

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

Chart data table
VehicleValue
AUDIA6 Avant (C8)55 TFSI5.3 s
AUDIA6 Avant (C9)3.0 TDI V65.3 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 (C8)55 TFSI
7.4 L/100 km
31.8 mpg US
38.2 mpg UK
AUDIA6 Avant (C9)3.0 TDI V6
6.3 L/100 km
37.3 mpg US
44.8 mpg UK

The biggest fuel consumption difference is between AUDI A6 Avant (C9) 3.0 TDI V6 and AUDI A6 Avant (C8) 55 TFSI: 1.1 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 (C8)55 TFSI
185 hp/t
138 kW/t
5.4 kg/hp
AUDIA6 Avant (C9)3.0 TDI V6
144 hp/t
107 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 Avant (C8)55 TFSI
851 km
529 mi
AUDIA6 Avant (C9)3.0 TDI V6
952 km
592 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
AUDIA6 Avant (C8)55 TFSI
340 hp
254 kW
5.3 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
AUDIA6 Avant (C9)3.0 TDI V6
299 hp
223 kW
5.3 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 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 (C8)55 TFSI
Power
340 hp
254 kW
0-100 km/h5.3 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
5 doors
5 seats
Trunk
565 L
20.0 cu ft
Length
4,939 mm
194.4 in
Height
1,467 mm
57.8 in
AUDIA6 Avant (C9)3.0 TDI V6
Power
299 hp
223 kW
0-100 km/h5.3 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
5 doors
5 seats
Trunk
466 L
16.5 cu ft
Length
4,999 mm
196.8 in
Height
1,452 mm
57.2 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 (C8)55 TFSI
Power
340 hp
254 kW
0-100 km/h5.3 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
7.4 L/100 km
31.8 mpg US
38.2 mpg UK
AUDIA6 Avant (C9)3.0 TDI V6
Power
299 hp
223 kW
0-100 km/h5.3 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
6.3 L/100 km
37.3 mpg US
44.8 mpg UK

AUDI A6 Avant (C9) 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 (C8)55 TFSI
7.4 L/100 km
31.8 mpg US
38.2 mpg UK
5.3 s
AUDIA6 Avant (C9)3.0 TDI V6
6.3 L/100 km
37.3 mpg US
44.8 mpg UK
5.3 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 (C8)55 TFSI
185 hp/t
138 kW/t
5.4 kg/hp
7.4 L/100 km
31.8 mpg US
38.2 mpg UK
AUDIA6 Avant (C9)3.0 TDI V6
144 hp/t
107 kW/t
7.0 kg/hp
6.3 L/100 km
37.3 mpg US
44.8 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAUDIA6 Avant (C8)55 TFSIAUDIA6 Avant (C9)3.0 TDI V6
Power
340 hp
254 kW
299 hp
223 kW
Torque
500 Nm
369 lb-ft
580 Nm
428 lb-ft
Acceleration
5.3 s
5.3 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
1,835 kg
4,045 lb
2,080 kg
4,586 lb
Fuel consumption
7.4 L/100 km
31.8 mpg US
38.2 mpg UK
6.3 L/100 km
37.3 mpg US
44.8 mpg UK
Practicality
Doors/seats
5 doors
5 seats
Trunk
565 L
20.0 cu ft
Length
4,939 mm
194.4 in
Height
1,467 mm
57.8 in
Doors/seats
5 doors
5 seats
Trunk
466 L
16.5 cu ft
Length
4,999 mm
196.8 in
Height
1,452 mm
57.2 in
Range score
851 km
529 mi
952 km
592 mi
CO2 score
169 g/km
-
Trunk score
565 L
20.0 cu ft
466 L
16.5 cu ft
Power-to-weight score
185 hp/t
138 kW/t
5.4 kg/hp
144 hp/t
107 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 Avant (C8) 55 TFSIAUDI A6 Avant (C9) 3.0 TDI V6
Consumption7.4 L/100 km31.8 mpg US38.2 mpg UK6.3 L/100 km37.3 mpg US44.8 mpg UK
Cost / 100 km12.95 LC100 km11.03 LC100 km
Cost / 100 mi20.84 LC100 mi17.74 LC100 mi
Annual fuel used1,110 L293 US gal244 UK gal945 L250 US gal208 UK gal
Annual fuel cost1,943 LC/year1,654 LC/year

Head-to-head comparisons

AUDI A6 Avant (C8) 55 TFSI

  • Has 41 hp more
  • Is 245 kg lighter
  • Has 42 hp/t better power-to-weight
  • Has 99 L more trunk volume

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Lightest
  • Best power-to-weight ratio
  • Largest trunk

Cons

  • Highest combined fuel consumption

AUDI A6 Avant (C9) 3.0 TDI V6

  • Has 80 Nm more
  • Uses 1.1 L/100 km less fuel
  • Has 101 km (63 mi) more estimated range

Pros

  • Highest torque
  • Lowest combined fuel consumption
  • Best estimated range

Cons

  • Lowest power
  • Heaviest
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
AUDI A6 Avant (C8) 55 TFSI
AUDI A6 Avant (C9) 3.0 TDI V6
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2 vehicles selected

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