Car comparison

AUDI A6 Avant (C8) 45 TFSIvsAUDI A6 Avant (C9) 2.0 TDI

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

New comparison

AUDI A6 Avant (C8)

45 TFSI

245 hp1984 ccGasolineFWDAutomaticTurbochargedWagon / estate2018-2020
VS

AUDI A6 Avant (C9)

2.0 TDI

204 hp1968 ccDieselAWDAutomaticTurbochargedWagon / estate2025-present

Comparison overview

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

Best choices

AUDI A6 Avant (C8) 45 TFSI

  • Quickest 0-100 km/h
    7.0 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    245 hp
    183 kW
  • Lightest
    1,705 kg
    3,759 lb
  • Best power-to-weight
    144 hp/t
    107 kW/t
    7.0 kg/hp
  • Largest trunk
    565 L
  • Best overall score
    67/100
  • Best performance score
    58/100
  • Best practicality score
    87/100

AUDI A6 Avant (C9) 2.0 TDI

  • Highest torque
    400 Nm
    295 lb-ft
  • Lowest combined fuel consumption
    5.9 L/100 km
    39.9 mpg US
    47.9 mpg UK
  • Best estimated range
    1,017 km
    632 mi
  • Best economy score
    91/100

Specification comparison

Specification comparison
ModelAUDIA6 Avant (C8)45 TFSIAUDIA6 Avant (C9)2.0 TDI
Power
245hp183kW
204hp152kW
Torque
370Nm273lb-ft
400Nm295lb-ft
Curb weight
1,705kg3,759lb
2,000kg4,409lb
Gross weight
2,310kg5,093lb
2,625kg5,787lb
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
238 km/h
148 mph
To 99% top speed
77.9s99% target: 257 km/h / 160 mph
Calculated
73.3s99% target: 236 km/h / 146 mph
Calculated
0-100 km/h
7.0s
7.0s
0-200 km/h
22.9s
Calculated
26.6s
Calculated
0-60 mph
6.7s
Calculated
6.7s
Calculated
Fuel consumption
6.8L/100 km34.6mpg US41.5mpg UK
5.9L/100 km39.9mpg US47.9mpg UK
Fuel consumption city
8.2L/100 km28.7mpg US34.4mpg UK
-
Fuel consumption highway
5.9L/100 km39.9mpg US47.9mpg UK
-
Quarter mile
14.9s
Calculated
15.0s
Calculated
Power-to-weight
144hp/t107kW/t65hp/1000 lb
Calculated
102hp/t76kW/t46hp/1000 lb
Calculated
Torque-to-weight
217Nm/t145lb-ft/ton
Calculated
200Nm/t134lb-ft/ton
Calculated
Estimated range
926km576mi
Calculated
1,017km632mi
Calculated
Displacement
1,984cc121cu in
1,968cc120cu in
Length
4,939mm194in
4,999mm197in
Width
1,886mm74in
1,875mm74in
Height
1,467mm58in
1,472mm58in
Wheelbase
2,924mm115in
2,923mm115in
Front track
1,630mm64in
1,631mm64in
Rear track
1,617mm64in
1,616mm64in
Trunk volume
565L
466L
Max trunk volume-
1,497L
Doors
5
5
Seats
5
5
Fuel tank
63L
60L
CO2 emissions
154g/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) 45 TFSIAUDI A6 Avant (C9) 2.0 TDIPowerTorque
  • AUDI A6 Avant (C8) 45 TFSI: Power / Torque
  • AUDI A6 Avant (C9) 2.0 TDI: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
AUDIA6 Avant (C8)45 TFSI5,000-6,500 rpm1,600-4,300 rpm6,750 rpm
AUDIA6 Avant (C9)2.0 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 (C8)45 TFSIAUDIA6 Avant (C9)2.0 TDI
Acceleration checkpoints
0-60 mph
0-97 km/h
6.7 s
6.7 s
0-100 km/h
0-62 mph
7.0 s
7.0 s
0-200 km/h
0-124 mph
22.9 s
26.6 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
238 km/h
148 mph
Drag race simulation
60 ft
18 m
2.7 s
2.6 s
330 ft
101 m
6.7 s
6.6 s
1/8 mile
201 m
9.9 s
9.9 s
1000 ft
305 m
12.6 s
12.6 s
1/4 mile
402 m
14.9 s
15.0 s
Trap speed
1/4 mile
402 m
163 km/h
101 mph
158 km/h
98 mph

Power comparison

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

Chart data table
VehicleValue
AUDIA6 Avant (C8)45 TFSI
245 hp
183 kW
AUDIA6 Avant (C9)2.0 TDI
204 hp
152 kW

AUDI A6 Avant (C8) 45 TFSI has 41 hp more than AUDI A6 Avant (C9) 2.0 TDI.

The biggest power difference is between AUDI A6 Avant (C9) 2.0 TDI and AUDI A6 Avant (C8) 45 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)45 TFSI
370 Nm
273 lb-ft
AUDIA6 Avant (C9)2.0 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 (C8)45 TFSI
1,705 kg
3,759 lb
AUDIA6 Avant (C9)2.0 TDI
2,000 kg
4,409 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)45 TFSI
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
AUDIA6 Avant (C9)2.0 TDI
238 km/h
148 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)45 TFSI7.0 s
AUDIA6 Avant (C9)2.0 TDI7.0 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)45 TFSI
6.8 L/100 km
34.6 mpg US
41.5 mpg UK
AUDIA6 Avant (C9)2.0 TDI
5.9 L/100 km
39.9 mpg US
47.9 mpg UK

The biggest fuel consumption difference is between AUDI A6 Avant (C9) 2.0 TDI and AUDI A6 Avant (C8) 45 TFSI: 0.9 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)45 TFSI
144 hp/t
107 kW/t
7.0 kg/hp
AUDIA6 Avant (C9)2.0 TDI
102 hp/t
76 kW/t
9.8 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
AUDIA6 Avant (C8)45 TFSI
926 km
576 mi
AUDIA6 Avant (C9)2.0 TDI
1,017 km
632 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
AUDIA6 Avant (C8)45 TFSI
245 hp
183 kW
7.0 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
AUDIA6 Avant (C9)2.0 TDI
204 hp
152 kW
7.0 s
238 km/h
148 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)45 TFSI
Power
245 hp
183 kW
0-100 km/h7.0 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)2.0 TDI
Power
204 hp
152 kW
0-100 km/h7.0 s
Top speed
238 km/h
148 mph
Doors/seats
5 doors
5 seats
Trunk
466 L
16.5 cu ft
Length
4,999 mm
196.8 in
Height
1,472 mm
58.0 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)45 TFSI
Power
245 hp
183 kW
0-100 km/h7.0 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
6.8 L/100 km
34.6 mpg US
41.5 mpg UK
AUDIA6 Avant (C9)2.0 TDI
Power
204 hp
152 kW
0-100 km/h7.0 s
Top speed
238 km/h
148 mph
5.9 L/100 km
39.9 mpg US
47.9 mpg UK

AUDI A6 Avant (C8) 45 TFSI 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)45 TFSI
6.8 L/100 km
34.6 mpg US
41.5 mpg UK
7.0 s
AUDIA6 Avant (C9)2.0 TDI
5.9 L/100 km
39.9 mpg US
47.9 mpg UK
7.0 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)45 TFSI
144 hp/t
107 kW/t
7.0 kg/hp
6.8 L/100 km
34.6 mpg US
41.5 mpg UK
AUDIA6 Avant (C9)2.0 TDI
102 hp/t
76 kW/t
9.8 kg/hp
5.9 L/100 km
39.9 mpg US
47.9 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAUDIA6 Avant (C8)45 TFSIAUDIA6 Avant (C9)2.0 TDI
Power
245 hp
183 kW
204 hp
152 kW
Torque
370 Nm
273 lb-ft
400 Nm
295 lb-ft
Acceleration
7.0 s
7.0 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
238 km/h
148 mph
Lightness
1,705 kg
3,759 lb
2,000 kg
4,409 lb
Fuel consumption
6.8 L/100 km
34.6 mpg US
41.5 mpg UK
5.9 L/100 km
39.9 mpg US
47.9 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
1,472 mm
58.0 in
Range score
926 km
576 mi
1,017 km
632 mi
CO2 score
154 g/km
-
Trunk score
565 L
20.0 cu ft
466 L
16.5 cu ft
Power-to-weight score
144 hp/t
107 kW/t
7.0 kg/hp
102 hp/t
76 kW/t
9.8 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) 45 TFSIAUDI A6 Avant (C9) 2.0 TDI
Consumption6.8 L/100 km34.6 mpg US41.5 mpg UK5.9 L/100 km39.9 mpg US47.9 mpg UK
Cost / 100 km11.90 LC100 km10.33 LC100 km
Cost / 100 mi19.15 LC100 mi16.62 LC100 mi
Annual fuel used1,020 L269 US gal224 UK gal885 L234 US gal195 UK gal
Annual fuel cost1,785 LC/year1,549 LC/year

Head-to-head comparisons

AUDI A6 Avant (C8) 45 TFSI

  • Has 41 hp more
  • Is 295 kg lighter
  • Has 22 km/h (14 mph) higher top speed
  • 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) 2.0 TDI

  • Has 30 Nm more
  • Uses 0.9 L/100 km less fuel
  • Has 90 km (56 mi) more estimated range

Pros

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

Cons

  • Lowest power
  • Heaviest
  • Lowest top speed
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
AUDI A6 Avant (C8) 45 TFSI
AUDI A6 Avant (C9) 2.0 TDI
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