Car comparison

AUDI A6 Avant (C9) 2.0 TDIvsAUDI A6 Avant (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 TDI

204 hp1968 ccDieselFWDAutomaticTurbochargedWagon / estate2025-present
VS

AUDI A6 Avant (C8)

40 TDI

204 hp1968 ccDieselFWDAutomaticTurbochargedWagon / estate2018-2023

Comparison overview

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

Best choices

AUDI A6 Avant (C8) 40 TDI

  • Lightest
    1,710 kg
    3,770 lb
  • Best power-to-weight
    119 hp/t
    89 kW/t
    8.4 kg/hp
  • Lowest combined fuel consumption
    4.9 L/100 km
    48.0 mpg US
    57.6 mpg UK
  • Best estimated range
    1,286 km
    799 mi
  • Largest trunk
    565 L
  • Best overall score
    63/100
  • Best economy score
    94/100
  • Best practicality score
    87/100

AUDI A6 Avant (C9) 2.0 TDI

  • Quickest 0-100 km/h
    7.9 s
  • Fastest top speed
    241 km/h
    150 mph
  • Most powerful
    204 hp
    152 kW
  • Highest torque
    400 Nm
    295 lb-ft
  • Best performance score
    52/100

Specification comparison

Specification comparison
ModelAUDIA6 Avant (C9)2.0 TDIAUDIA6 Avant (C8)40 TDI
Power
204hp152kW
204hp152kW
Torque
400Nm295lb-ft
400Nm295lb-ft
Curb weight
1,930kg4,255lb
1,710kg3,770lb
Gross weight
2,555kg5,633lb
2,330kg5,137lb
Top speed
241 km/h
150 mph
241 km/h
150 mph
To 99% top speed
82.2s99% target: 239 km/h / 148 mph
Calculated
86.2s99% target: 239 km/h / 148 mph
Calculated
0-100 km/h
7.9s
8.3s
0-200 km/h
29.0s
Calculated
30.5s
Calculated
0-60 mph
7.5s
Calculated
7.9s
Calculated
Fuel consumption
5.7L/100 km41.3mpg US49.6mpg UK
4.9L/100 km48mpg US57.6mpg UK
Fuel consumption city-
5.3L/100 km44.4mpg US53.3mpg UK
Fuel consumption highway-
4.7L/100 km50mpg US60.1mpg UK
Quarter mile
15.7s
Calculated
16.0s
Calculated
Power-to-weight
106hp/t79kW/t48hp/1000 lb
Calculated
119hp/t89kW/t54hp/1000 lb
Calculated
Torque-to-weight
207Nm/t139lb-ft/ton
Calculated
234Nm/t157lb-ft/ton
Calculated
Estimated range
1,053km654mi
Calculated
1,286km799mi
Calculated
Displacement
1,968cc120cu in
1,968cc120cu in
Length
4,999mm197in
4,939mm194in
Width
1,875mm74in
1,886mm74in
Height
1,472mm58in
1,467mm58in
Wheelbase
2,923mm115in
2,924mm115in
Front track
1,631mm64in
1,630mm64in
Rear track
1,616mm64in
1,617mm64in
Trunk volume
466L
565L
Max trunk volume
1,497L
-
Doors
5
5
Seats
5
5
Fuel tank
60L
63L
CO2 emissions-
129g/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 (C9) 2.0 TDIAUDI A6 Avant (C8) 40 TDIPowerTorque
  • AUDI A6 Avant (C9) 2.0 TDI: Power / Torque
  • AUDI A6 Avant (C8) 40 TDI: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
AUDIA6 Avant (C9)2.0 TDI3,800-4,200 rpm1,750-3,250 rpm4,450 rpm
AUDIA6 Avant (C8)40 TDI3,750-4,200 rpm1,750-3,000 rpm4,450 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAUDIA6 Avant (C9)2.0 TDIAUDIA6 Avant (C8)40 TDI
Acceleration checkpoints
0-60 mph
0-97 km/h
7.5 s
7.9 s
0-100 km/h
0-62 mph
7.9 s
8.3 s
0-200 km/h
0-124 mph
29.0 s
30.5 s
Top speed
241 km/h
150 mph
241 km/h
150 mph
Drag race simulation
60 ft
18 m
2.7 s
2.8 s
330 ft
101 m
7.0 s
7.2 s
1/8 mile
201 m
10.4 s
10.6 s
1000 ft
305 m
13.3 s
13.6 s
1/4 mile
402 m
15.7 s
16.0 s
Trap speed
1/4 mile
402 m
153 km/h
95 mph
150 km/h
93 mph

Power comparison

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

Chart data table
VehicleValue
AUDIA6 Avant (C9)2.0 TDI
204 hp
152 kW
AUDIA6 Avant (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 TDI
400 Nm
295 lb-ft
AUDIA6 Avant (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 TDI
1,930 kg
4,255 lb
AUDIA6 Avant (C8)40 TDI
1,710 kg
3,770 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 TDI
241 km/h
150 mph
AUDIA6 Avant (C8)40 TDI
241 km/h
150 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 TDI7.9 s
AUDIA6 Avant (C8)40 TDI8.3 s

The biggest 0-100 km/h difference is between AUDI A6 Avant (C9) 2.0 TDI and AUDI A6 Avant (C8) 40 TDI: 0.4 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 TDI
5.7 L/100 km
41.3 mpg US
49.6 mpg UK
AUDIA6 Avant (C8)40 TDI
4.9 L/100 km
48.0 mpg US
57.6 mpg UK

The biggest fuel consumption difference is between AUDI A6 Avant (C8) 40 TDI and AUDI A6 Avant (C9) 2.0 TDI: 0.8 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 TDI
106 hp/t
79 kW/t
9.5 kg/hp
AUDIA6 Avant (C8)40 TDI
119 hp/t
89 kW/t
8.4 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 TDI
1,053 km
654 mi
AUDIA6 Avant (C8)40 TDI
1,286 km
799 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
AUDIA6 Avant (C9)2.0 TDI
204 hp
152 kW
7.9 s
241 km/h
150 mph
AUDIA6 Avant (C8)40 TDI
204 hp
152 kW
8.3 s
241 km/h
150 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 TDI
Power
204 hp
152 kW
0-100 km/h7.9 s
Top speed
241 km/h
150 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
AUDIA6 Avant (C8)40 TDI
Power
204 hp
152 kW
0-100 km/h8.3 s
Top speed
241 km/h
150 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

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 TDI
Power
204 hp
152 kW
0-100 km/h7.9 s
Top speed
241 km/h
150 mph
5.7 L/100 km
41.3 mpg US
49.6 mpg UK
AUDIA6 Avant (C8)40 TDI
Power
204 hp
152 kW
0-100 km/h8.3 s
Top speed
241 km/h
150 mph
4.9 L/100 km
48.0 mpg US
57.6 mpg UK

AUDI A6 Avant (C9) 2.0 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 TDI
5.7 L/100 km
41.3 mpg US
49.6 mpg UK
7.9 s
AUDIA6 Avant (C8)40 TDI
4.9 L/100 km
48.0 mpg US
57.6 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 (C9)2.0 TDI
106 hp/t
79 kW/t
9.5 kg/hp
5.7 L/100 km
41.3 mpg US
49.6 mpg UK
AUDIA6 Avant (C8)40 TDI
119 hp/t
89 kW/t
8.4 kg/hp
4.9 L/100 km
48.0 mpg US
57.6 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAUDIA6 Avant (C9)2.0 TDIAUDIA6 Avant (C8)40 TDI
Power
204 hp
152 kW
204 hp
152 kW
Torque
400 Nm
295 lb-ft
400 Nm
295 lb-ft
Acceleration
7.9 s
8.3 s
Top speed
241 km/h
150 mph
241 km/h
150 mph
Lightness
1,930 kg
4,255 lb
1,710 kg
3,770 lb
Fuel consumption
5.7 L/100 km
41.3 mpg US
49.6 mpg UK
4.9 L/100 km
48.0 mpg US
57.6 mpg UK
Practicality
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
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
Range score
1,053 km
654 mi
1,286 km
799 mi
CO2 score
-
129 g/km
Trunk score
466 L
16.5 cu ft
565 L
20.0 cu ft
Power-to-weight score
106 hp/t
79 kW/t
9.5 kg/hp
119 hp/t
89 kW/t
8.4 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 TDIAUDI A6 Avant (C8) 40 TDI
Consumption5.7 L/100 km41.3 mpg US49.6 mpg UK4.9 L/100 km48 mpg US57.6 mpg UK
Cost / 100 km9.98 LC100 km8.58 LC100 km
Cost / 100 mi16.05 LC100 mi13.80 LC100 mi
Annual fuel used855 L226 US gal188 UK gal735 L194 US gal162 UK gal
Annual fuel cost1,496 LC/year1,286 LC/year

Head-to-head comparisons

AUDI A6 Avant (C9) 2.0 TDI

  • Is 0.4 s quicker from 0-100 km/h

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Highest torque

Cons

  • Highest combined fuel consumption
  • Heaviest
  • Smallest trunk

AUDI A6 Avant (C8) 40 TDI

  • Is 220 kg lighter
  • Uses 0.8 L/100 km less fuel
  • Has 14 hp/t better power-to-weight
  • Has 233 km (145 mi) more estimated range
  • Has 99 L more trunk volume

Pros

  • Lightest
  • Lowest combined fuel consumption
  • Best power-to-weight ratio
  • Best estimated range
  • Largest trunk

Cons

  • Slowest 0-100 km/h

Choose cars to compare

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

Popular comparisons

2.0 TDI
40 TDI
VS
AUDIA6 Avant (C9)2.0 TDIvsAUDIA6 Avant (C8)Facelift 202340 TDI
40 TDI
40 TDI
VS
AUDIA6 Avant (C8)40 TDIvsAUDIA6 allroad (C8)40 TDI
2.0 TDI
40 TDI
VS
AUDIA6 Avant (C9)2.0 TDIvsAUDIA6 Avant (C8)40 TDI
40 TDI
2.0 TFSI
VS
AUDIA6 Avant (C8)40 TDIvsAUDIA6 Avant (C9)2.0 TFSI
2.0 TDI
2.0 TDI
VS
AUDIA6 Avant (C9)2.0 TDIvsAUDIA6 Avant (4G/C7)Facelift 20162.0 TDI
2.0 TDI
2.0 TDI
VS
AUDIA6 Avant (C9)2.0 TDIvsAUDIA6 Avant (4G/C7)Facelift 20142.0 TDI
2.0 TDI
3.0 TDI V6
VS
AUDIA6 Avant (C9)2.0 TDIvsAUDIA6 allroad (C9)3.0 TDI V6
40 TDI
40 TDI
VS
AUDIA6 Avant (C8)40 TDIvsAUDIA6 Sedan (C8)40 TDI
2.0 TDI
40 TDI
VS
AUDIA6 Avant (C9)2.0 TDIvsAUDIA6 Sedan (C8)Facelift 202340 TDI
40 TDI
2.8 V6 30V
VS
AUDIA6 Avant (C8)40 TDIvsAUDIA6 Avant (4A/C4)2.8 V6 30V
40 TDI
3.0 TDI V6
VS
AUDIA6 Avant (C8)40 TDIvsAUDIA6 Avant (4G/C7)3.0 TDI V6
2.0 TDI
2.7 T V6
VS
AUDIA6 Avant (C9)2.0 TDIvsAUDIA6 Avant (4B/C5)Facelift 20012.7 T V6
AUDI A6 Avant (C9) 2.0 TDI vs AUDI A6 Avant (C8) 40 TDI - car comparison - FastVsFaster