Car comparison

AUDI S6 (C8) · Facelift 2023 2.9 TFSI V6vsAUDI S6 (C7) 4.0 TFSI V8

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

New comparison

AUDI S6 (C8) · Facelift 2023

2.9 TFSI V6

444 hp2894 ccGasolineAWDAutomaticTwin-turboSedan2023-2025
VS

AUDI S6 (C7)

4.0 TFSI V8

420 hp3993 ccGasolineAWDAutomaticTurbochargedSedan2012-2014

Comparison overview

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

Best choices

AUDI S6 (C7) 4.0 TFSI V8

  • Lightest
    1,895 kg
    4,178 lb
  • Best power-to-weight
    222 hp/t
    165 kW/t
    4.5 kg/hp
  • Lowest combined fuel consumption
    9.6 L/100 km
    24.5 mpg US
    29.4 mpg UK
  • Lowest highway consumption
    7.5 L/100 km
    31.4 mpg US
    37.7 mpg UK
  • Best estimated range
    781 km
    485 mi
  • Largest trunk
    530 L
  • Best economy score
    81/100
  • Best practicality score
    77/100

AUDI S6 (C8) Facelift 2023 2.9 TFSI V6

  • Quickest 0-100 km/h
    4.5 s
  • Fastest top speed
    265 km/h
    165 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    444 hp
    331 kW
  • Highest torque
    600 Nm
    443 lb-ft
  • Lowest city consumption
    12.4 L/100 km
    19.0 mpg US
    22.8 mpg UK
  • Best overall score
    76/100
  • Best performance score
    78/100

Specification comparison

Specification comparison
ModelAUDIS6 (C8)Facelift 20232.9 TFSI V6AUDIS6 (C7)4.0 TFSI V8
Power
444hp331kW
420hp313kW
Torque
600Nm443lb-ft
550Nm406lb-ft
Curb weight
2,035kg4,486lb
1,895kg4,178lb
Gross weight
2,625kg5,787lb
2,505kg5,523lb
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
45.7s99% target: 262 km/h / 163 mph
Calculated
46.1s99% target: 262 km/h / 163 mph
Calculated
0-100 km/h
4.5s
4.6s
0-200 km/h
13.6s
Calculated
13.9s
Calculated
0-60 mph
4.3s
Calculated
4.4s
Calculated
Fuel consumption
10.7L/100 km22mpg US26.4mpg UK
9.6L/100 km24.5mpg US29.4mpg UK
Fuel consumption city
12.4L/100 km19mpg US22.8mpg UK
13.4L/100 km17.6mpg US21.1mpg UK
Fuel consumption highway
9L/100 km26.1mpg US31.4mpg UK
7.5L/100 km31.4mpg US37.7mpg UK
Quarter mile
12.4s
Calculated
12.5s
Calculated
Power-to-weight
218hp/t163kW/t99hp/1000 lb
Calculated
222hp/t165kW/t101hp/1000 lb
Calculated
Torque-to-weight
295Nm/t197lb-ft/ton
Calculated
290Nm/t194lb-ft/ton
Calculated
Estimated range
682km424mi
Calculated
781km485mi
Calculated
Displacement
2,894cc177cu in
3,993cc244cu in
Length
4,954mm195in
4,931mm194in
Width
1,886mm74in
1,874mm74in
Height
1,448mm57in
1,468mm58in
Wheelbase
2,929mm115in
2,916mm115in
Front track-
1,615mm64in
Rear track-
1,606mm63in
Trunk volume
388L
530L
Max trunk volume-
995L
Doors
4
4
Seats
5
5
Fuel tank
73L
75L
CO2 emissions-
225g/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 S6 (C8) Facelift 2023 2.9 TFSI V6AUDI S6 (C7) 4.0 TFSI V8PowerTorque
  • AUDI S6 (C8) Facelift 2023 2.9 TFSI V6: Power / Torque
  • AUDI S6 (C7) 4.0 TFSI V8: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
AUDIS6 (C8)Facelift 20232.9 TFSI V65,900 rpm2,700 rpm6,150 rpm
AUDIS6 (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
MetricAUDIS6 (C8)Facelift 20232.9 TFSI V6AUDIS6 (C7)4.0 TFSI V8
Acceleration checkpoints
0-60 mph
0-97 km/h
4.3 s
4.4 s
0-100 km/h
0-62 mph
4.5 s
4.6 s
0-200 km/h
0-124 mph
13.6 s
13.9 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Limited
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
2.2 s
2.3 s
330 ft
101 m
5.6 s
5.6 s
1/8 mile
201 m
8.2 s
8.3 s
1000 ft
305 m
10.5 s
10.6 s
1/4 mile
402 m
12.4 s
12.5 s
Trap speed
1/4 mile
402 m
192 km/h
119 mph
191 km/h
119 mph

Power comparison

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

Chart data table
VehicleValue
AUDIS6 (C8)Facelift 20232.9 TFSI V6
444 hp
331 kW
AUDIS6 (C7)4.0 TFSI V8
420 hp
313 kW

AUDI S6 (C8) Facelift 2023 2.9 TFSI V6 has 24 hp more than AUDI S6 (C7) 4.0 TFSI V8.

The biggest power difference is between AUDI S6 (C7) 4.0 TFSI V8 and AUDI S6 (C8) Facelift 2023 2.9 TFSI V6: 24 hp (18 kW).

Torque comparison

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

Chart data table
VehicleValue
AUDIS6 (C8)Facelift 20232.9 TFSI V6
600 Nm
443 lb-ft
AUDIS6 (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
AUDIS6 (C8)Facelift 20232.9 TFSI V6
2,035 kg
4,486 lb
AUDIS6 (C7)4.0 TFSI V8
1,895 kg
4,178 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
AUDIS6 (C8)Facelift 20232.9 TFSI V6
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
AUDIS6 (C7)4.0 TFSI V8
Unrestricted
265 km/h165 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
AUDIS6 (C8)Facelift 20232.9 TFSI V64.5 s
AUDIS6 (C7)4.0 TFSI V84.6 s

The biggest 0-100 km/h difference is between AUDI S6 (C8) Facelift 2023 2.9 TFSI V6 and AUDI S6 (C7) 4.0 TFSI V8: 0.1 s.

Fuel consumption comparison

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

Chart data table
VehicleValue
AUDIS6 (C8)Facelift 20232.9 TFSI V6
10.7 L/100 km
22.0 mpg US
26.4 mpg UK
AUDIS6 (C7)4.0 TFSI V8
9.6 L/100 km
24.5 mpg US
29.4 mpg UK

The biggest fuel consumption difference is between AUDI S6 (C7) 4.0 TFSI V8 and AUDI S6 (C8) Facelift 2023 2.9 TFSI V6: 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
AUDIS6 (C8)Facelift 20232.9 TFSI V6
218 hp/t
163 kW/t
4.6 kg/hp
AUDIS6 (C7)4.0 TFSI V8
222 hp/t
165 kW/t
4.5 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
AUDIS6 (C8)Facelift 20232.9 TFSI V6
682 km
424 mi
AUDIS6 (C7)4.0 TFSI V8
781 km
485 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
AUDIS6 (C8)Facelift 20232.9 TFSI V6
444 hp
331 kW
4.5 s
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
AUDIS6 (C7)4.0 TFSI V8
420 hp
313 kW
4.6 s
Unrestricted
265 km/h165 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
AUDIS6 (C8)Facelift 20232.9 TFSI V6
Power
444 hp
331 kW
0-100 km/h4.5 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
4 doors
5 seats
Trunk
388 L
13.7 cu ft
Length
4,954 mm
195.0 in
Height
1,448 mm
57.0 in
AUDIS6 (C7)4.0 TFSI V8
Power
420 hp
313 kW
0-100 km/h4.6 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
4 doors
5 seats
Trunk
530 L
18.7 cu ft
Length
4,931 mm
194.1 in
Height
1,468 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
AUDIS6 (C8)Facelift 20232.9 TFSI V6
Power
444 hp
331 kW
0-100 km/h4.5 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
10.7 L/100 km
22.0 mpg US
26.4 mpg UK
AUDIS6 (C7)4.0 TFSI V8
Power
420 hp
313 kW
0-100 km/h4.6 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
9.6 L/100 km
24.5 mpg US
29.4 mpg UK

AUDI S6 (C7) 4.0 TFSI V8 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
AUDIS6 (C8)Facelift 20232.9 TFSI V6
10.7 L/100 km
22.0 mpg US
26.4 mpg UK
4.5 s
AUDIS6 (C7)4.0 TFSI V8
9.6 L/100 km
24.5 mpg US
29.4 mpg UK
4.6 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
AUDIS6 (C8)Facelift 20232.9 TFSI V6
218 hp/t
163 kW/t
4.6 kg/hp
10.7 L/100 km
22.0 mpg US
26.4 mpg UK
AUDIS6 (C7)4.0 TFSI V8
222 hp/t
165 kW/t
4.5 kg/hp
9.6 L/100 km
24.5 mpg US
29.4 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAUDIS6 (C8)Facelift 20232.9 TFSI V6AUDIS6 (C7)4.0 TFSI V8
Power
444 hp
331 kW
420 hp
313 kW
Torque
600 Nm
443 lb-ft
550 Nm
406 lb-ft
Acceleration
4.5 s
4.6 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Lightness
2,035 kg
4,486 lb
1,895 kg
4,178 lb
Fuel consumption
10.7 L/100 km
22.0 mpg US
26.4 mpg UK
9.6 L/100 km
24.5 mpg US
29.4 mpg UK
Practicality
Doors/seats
4 doors
5 seats
Trunk
388 L
13.7 cu ft
Length
4,954 mm
195.0 in
Height
1,448 mm
57.0 in
Doors/seats
4 doors
5 seats
Trunk
530 L
18.7 cu ft
Length
4,931 mm
194.1 in
Height
1,468 mm
57.8 in
Range score
682 km
424 mi
781 km
485 mi
CO2 score
-
225 g/km
Trunk score
388 L
13.7 cu ft
530 L
18.7 cu ft
Power-to-weight score
218 hp/t
163 kW/t
4.6 kg/hp
222 hp/t
165 kW/t
4.5 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 S6 (C8) Facelift 2023 2.9 TFSI V6AUDI S6 (C7) 4.0 TFSI V8
Consumption10.7 L/100 km22 mpg US26.4 mpg UK9.6 L/100 km24.5 mpg US29.4 mpg UK
Cost / 100 km18.72 LC100 km16.80 LC100 km
Cost / 100 mi30.13 LC100 mi27.04 LC100 mi
Annual fuel used1,605 L424 US gal353 UK gal1,440 L380 US gal317 UK gal
Annual fuel cost2,809 LC/year2,520 LC/year

Head-to-head comparisons

AUDI S6 (C8) Facelift 2023 2.9 TFSI V6

  • Has 24 hp more
  • Has 50 Nm more
  • Is 0.1 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 S6 (C7) 4.0 TFSI V8

  • Is 140 kg lighter
  • Uses 1.1 L/100 km less fuel
  • Has 3 hp/t better power-to-weight
  • Has 99 km (62 mi) more estimated range
  • Has 142 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
  • Lowest power

Choose cars to compare

Brand
Model
Generation
Engine or modification
AUDI S6 (C8) 2.9 TFSI V6
AUDI S6 (C7) 4.0 TFSI V8
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2 vehicles selected

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