Car comparison

AUDI RS4 Avant (B9) 2.9 TFSIvsAUDI S6 Avant (C7) 4.0 TFSI V8

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

New comparison

AUDI RS4 Avant (B9)

2.9 TFSI

450 hp2894 ccGasolineAWDAutomaticTwin-turboWagon / estate2017-2019
VS

AUDI S6 Avant (C7)

4.0 TFSI V8

420 hp3993 ccGasolineAWDAutomaticTurbochargedWagon / estate2012-2014

Comparison overview

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

Best choices

AUDI RS4 Avant (B9) 2.9 TFSI

  • Quickest 0-100 km/h
    4.1 s
  • Fastest top speed
    260 km/h
    162 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    450 hp
    336 kW
  • Highest torque
    600 Nm
    443 lb-ft
  • Lightest
    1,715 kg
    3,781 lb
  • Best power-to-weight
    262 hp/t
    196 kW/t
    3.8 kg/hp
  • Lowest combined fuel consumption
    8.8 L/100 km
    26.7 mpg US
    32.1 mpg UK
  • Lowest city consumption
    11.6 L/100 km
    20.3 mpg US
    24.4 mpg UK
  • Lowest highway consumption
    7.2 L/100 km
    32.7 mpg US
    39.2 mpg UK
  • Lowest CO2 emissions
    200 g/km
  • Best overall score
    81/100
  • Best performance score
    80/100
  • Best economy score
    83/100

Specification comparison

Specification comparison
ModelAUDIRS4 Avant (B9)2.9 TFSIAUDIS6 Avant (C7)4.0 TFSI V8
Power
450hp336kW
420hp313kW
Torque
600Nm443lb-ft
550Nm406lb-ft
Curb weight
1,715kg3,781lb
1,950kg4,299lb
Gross weight
2,305kg5,082lb
2,580kg5,688lb
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
38.6s99% target: 257 km/h / 160 mph
Calculated
48.5s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
4.1s
4.7s
0-200 km/h
12.3s
Calculated
14.8s
Calculated
0-60 mph
3.9s
Calculated
4.5s
Calculated
Fuel consumption
8.8L/100 km26.7mpg US32.1mpg UK
9.7L/100 km24.2mpg US29.1mpg UK
Fuel consumption city
11.6L/100 km20.3mpg US24.4mpg UK
13.4L/100 km17.6mpg US21.1mpg UK
Fuel consumption highway
7.2L/100 km32.7mpg US39.2mpg UK
7.5L/100 km31.4mpg US37.7mpg UK
Quarter mile
12.0s
Calculated
12.7s
Calculated
Power-to-weight
262hp/t196kW/t119hp/1000 lb
Calculated
215hp/t161kW/t98hp/1000 lb
Calculated
Torque-to-weight
350Nm/t234lb-ft/ton
Calculated
282Nm/t189lb-ft/ton
Calculated
Estimated range
659km410mi
Calculated
773km480mi
Calculated
Displacement
2,894cc177cu in
3,993cc244cu in
Length
4,781mm188in
4,934mm194in
Width
1,866mm73in
1,874mm74in
Height
1,404mm55in
1,482mm58in
Wheelbase
2,826mm111in
2,916mm115in
Front track
1,580mm62in
1,627mm64in
Rear track
1,575mm62in
1,618mm64in
Trunk volume
505L
565L
Max trunk volume-
1,680L
Doors
5
5
Seats
5
5
Fuel tank
58L
75L
CO2 emissions
200g/km
226g/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 RS4 Avant (B9) 2.9 TFSIAUDI S6 Avant (C7) 4.0 TFSI V8PowerTorque
  • AUDI RS4 Avant (B9) 2.9 TFSI: Power / Torque
  • AUDI S6 Avant (C7) 4.0 TFSI V8: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
AUDIRS4 Avant (B9)2.9 TFSI5,700-6,700 rpm1,900-5,000 rpm6,950 rpm
AUDIS6 Avant (C7)4.0 TFSI V85,500-6,400 rpm1,400-5,200 rpm6,650 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAUDIRS4 Avant (B9)2.9 TFSIAUDIS6 Avant (C7)4.0 TFSI V8
Acceleration checkpoints
0-60 mph
0-97 km/h
3.9 s
4.5 s
0-100 km/h
0-62 mph
4.1 s
4.7 s
0-200 km/h
0-124 mph
12.3 s
14.8 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
Likely limited
Drag race simulation
60 ft
18 m
2.2 s
2.2 s
330 ft
101 m
5.4 s
5.7 s
1/8 mile
201 m
7.9 s
8.4 s
1000 ft
305 m
10.1 s
10.7 s
1/4 mile
402 m
12.0 s
12.7 s
Trap speed
1/4 mile
402 m
197 km/h
123 mph
187 km/h
116 mph

Power comparison

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

Chart data table
VehicleValue
AUDIRS4 Avant (B9)2.9 TFSI
450 hp
336 kW
AUDIS6 Avant (C7)4.0 TFSI V8
420 hp
313 kW

AUDI RS4 Avant (B9) 2.9 TFSI has 30 hp more than AUDI S6 Avant (C7) 4.0 TFSI V8.

The biggest power difference is between AUDI S6 Avant (C7) 4.0 TFSI V8 and AUDI RS4 Avant (B9) 2.9 TFSI: 30 hp (22 kW).

Torque comparison

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

Chart data table
VehicleValue
AUDIRS4 Avant (B9)2.9 TFSI
600 Nm
443 lb-ft
AUDIS6 Avant (C7)4.0 TFSI V8
550 Nm
406 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
AUDIRS4 Avant (B9)2.9 TFSI
1,715 kg
3,781 lb
AUDIS6 Avant (C7)4.0 TFSI V8
1,950 kg
4,299 lb

Top speed without limiter comparison

Bar comparison chart for Top speed without limiter. Higher is better · km/h / mph

Chart data table
VehicleValue
AUDIRS4 Avant (B9)2.9 TFSI
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
AUDIS6 Avant (C7)4.0 TFSI V8
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
AUDIRS4 Avant (B9)2.9 TFSI4.1 s
AUDIS6 Avant (C7)4.0 TFSI V84.7 s

The biggest 0-100 km/h difference is between AUDI RS4 Avant (B9) 2.9 TFSI and AUDI S6 Avant (C7) 4.0 TFSI V8: 0.6 s.

Fuel consumption comparison

Bar comparison chart for Fuel consumption. Lower is better · L/100 km / mpg US / mpg UK

Chart data table
VehicleValue
AUDIRS4 Avant (B9)2.9 TFSI
8.8 L/100 km
26.7 mpg US
32.1 mpg UK
AUDIS6 Avant (C7)4.0 TFSI V8
9.7 L/100 km
24.2 mpg US
29.1 mpg UK

The biggest fuel consumption difference is between AUDI RS4 Avant (B9) 2.9 TFSI and AUDI S6 Avant (C7) 4.0 TFSI V8: 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
AUDIRS4 Avant (B9)2.9 TFSI
262 hp/t
196 kW/t
3.8 kg/hp
AUDIS6 Avant (C7)4.0 TFSI V8
215 hp/t
161 kW/t
4.6 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
AUDIRS4 Avant (B9)2.9 TFSI
659 km
410 mi
AUDIS6 Avant (C7)4.0 TFSI V8
773 km
480 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
AUDIRS4 Avant (B9)2.9 TFSI
450 hp
336 kW
4.1 s
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
AUDIS6 Avant (C7)4.0 TFSI V8
420 hp
313 kW
4.7 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
AUDIRS4 Avant (B9)2.9 TFSI
Power
450 hp
336 kW
0-100 km/h4.1 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
5 doors
5 seats
Trunk
505 L
17.8 cu ft
Length
4,781 mm
188.2 in
Height
1,404 mm
55.3 in
AUDIS6 Avant (C7)4.0 TFSI V8
Power
420 hp
313 kW
0-100 km/h4.7 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
4,934 mm
194.3 in
Height
1,482 mm
58.3 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
AUDIRS4 Avant (B9)2.9 TFSI
Power
450 hp
336 kW
0-100 km/h4.1 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
8.8 L/100 km
26.7 mpg US
32.1 mpg UK
AUDIS6 Avant (C7)4.0 TFSI V8
Power
420 hp
313 kW
0-100 km/h4.7 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
9.7 L/100 km
24.2 mpg US
29.1 mpg UK

AUDI RS4 Avant (B9) 2.9 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
AUDIRS4 Avant (B9)2.9 TFSI
8.8 L/100 km
26.7 mpg US
32.1 mpg UK
4.1 s
AUDIS6 Avant (C7)4.0 TFSI V8
9.7 L/100 km
24.2 mpg US
29.1 mpg UK
4.7 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
AUDIRS4 Avant (B9)2.9 TFSI
262 hp/t
196 kW/t
3.8 kg/hp
8.8 L/100 km
26.7 mpg US
32.1 mpg UK
AUDIS6 Avant (C7)4.0 TFSI V8
215 hp/t
161 kW/t
4.6 kg/hp
9.7 L/100 km
24.2 mpg US
29.1 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAUDIRS4 Avant (B9)2.9 TFSIAUDIS6 Avant (C7)4.0 TFSI V8
Power
450 hp
336 kW
420 hp
313 kW
Torque
600 Nm
443 lb-ft
550 Nm
406 lb-ft
Acceleration
4.1 s
4.7 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
1,715 kg
3,781 lb
1,950 kg
4,299 lb
Fuel consumption
8.8 L/100 km
26.7 mpg US
32.1 mpg UK
9.7 L/100 km
24.2 mpg US
29.1 mpg UK
Practicality
Doors/seats
5 doors
5 seats
Trunk
505 L
17.8 cu ft
Length
4,781 mm
188.2 in
Height
1,404 mm
55.3 in
Doors/seats
5 doors
5 seats
Trunk
565 L
20.0 cu ft
Length
4,934 mm
194.3 in
Height
1,482 mm
58.3 in
Range score
659 km
410 mi
773 km
480 mi
CO2 score
200 g/km
226 g/km
Trunk score
505 L
17.8 cu ft
565 L
20.0 cu ft
Power-to-weight score
262 hp/t
196 kW/t
3.8 kg/hp
215 hp/t
161 kW/t
4.6 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 RS4 Avant (B9) 2.9 TFSIAUDI S6 Avant (C7) 4.0 TFSI V8
Consumption8.8 L/100 km26.7 mpg US32.1 mpg UK9.7 L/100 km24.2 mpg US29.1 mpg UK
Cost / 100 km15.40 LC100 km16.97 LC100 km
Cost / 100 mi24.78 LC100 mi27.32 LC100 mi
Annual fuel used1,320 L349 US gal290 UK gal1,455 L384 US gal320 UK gal
Annual fuel cost2,310 LC/year2,546 LC/year

Head-to-head comparisons

AUDI RS4 Avant (B9) 2.9 TFSI

  • Has 30 hp more
  • Has 50 Nm more
  • Is 235 kg lighter
  • Is 0.6 s quicker from 0-100 km/h
  • Uses 0.9 L/100 km less fuel
  • Has 47 hp/t better power-to-weight
  • Emits 26 g/km less CO2

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Highest torque
  • Lightest
  • Lowest combined fuel consumption
  • Best power-to-weight ratio

Cons

  • Smallest trunk

AUDI S6 Avant (C7) 4.0 TFSI V8

  • Has 114 km (71 mi) more estimated range
  • Has 60 L more trunk volume

Pros

  • Best estimated range
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Highest combined fuel consumption
  • Heaviest
  • Highest CO2 emissions

Choose cars to compare

Brand
Model
Generation
Engine or modification
AUDI RS4 Avant (B9) 2.9 TFSI
AUDI S6 Avant (C7) 4.0 TFSI V8
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