Car comparison

AUDI S6 (C8) 2.9 TFSI V6vsAUDI S6 (4B/C5) 4.2 V8

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

New comparison

AUDI S6 (C8)

2.9 TFSI V6

444 hp2894 ccGasolineAWDAutomaticTwin-turboSedan2019-2023
VS

AUDI S6 (4B/C5)

4.2 V8

340 hp4172 ccGasolineAWDManualNaturally aspiratedSedan1999-2005

Comparison overview

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

Best choices

AUDI S6 (C8) 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
  • Best power-to-weight
    218 hp/t
    163 kW/t
    4.6 kg/hp
  • Lowest combined fuel consumption
    10.7 L/100 km
    22.0 mpg US
    26.4 mpg UK
  • Lowest city consumption
    13.1 L/100 km
    18.0 mpg US
    21.6 mpg UK
  • Lowest highway consumption
    8.4 L/100 km
    28.0 mpg US
    33.6 mpg UK
  • Best estimated range
    682 km
    424 mi
  • Best overall score
    76/100
  • Best performance score
    79/100
  • Best economy score
    78/100

Specification comparison

Specification comparison
ModelAUDIS6 (C8)2.9 TFSI V6AUDIS6 (4B/C5)4.2 V8
Power
444hp331kW
340hp254kW
Torque
600Nm443lb-ft
420Nm310lb-ft
Curb weight
2,035kg4,486lb
1,735kg3,825lb
Gross weight-
2,275kg5,016lb
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
45.1s99% target: 262 km/h / 163 mph
Calculated
59.4s99% target: 257 km/h / 160 mph
Calculated
0-100 km/h
4.5s
5.7s
0-200 km/h
13.6s
Calculated
18.0s
Calculated
0-60 mph
4.3s
Calculated
5.4s
Calculated
Fuel consumption
10.7L/100 km22mpg US26.4mpg UK
14.1L/100 km16.7mpg US20.0mpg UK
Fuel consumption city
13.1L/100 km18mpg US21.6mpg UK
21L/100 km11.2mpg US13.5mpg UK
Fuel consumption highway
8.4L/100 km28mpg US33.6mpg UK
10.2L/100 km23.1mpg US27.7mpg UK
Quarter mile
12.4s
Calculated
13.7s
Calculated
Power-to-weight
218hp/t163kW/t99hp/1000 lb
Calculated
196hp/t146kW/t89hp/1000 lb
Calculated
Torque-to-weight
295Nm/t197lb-ft/ton
Calculated
242Nm/t162lb-ft/ton
Calculated
Estimated range
682km424mi
Calculated
582km361mi
Calculated
Displacement
2,894cc177cu in
4,172cc255cu in
Length
4,954mm195in
4,833mm190in
Width
1,886mm74in
1,850mm73in
Height
1,446mm57in
1,443mm57in
Wheelbase
2,928mm115in
2,759mm109in
Front track
1,633mm64in
1,578mm62in
Rear track
1,618mm64in
1,590mm63in
Trunk volume
388L
434L
Doors
4
4
Seats
5
5
Fuel tank
73L
82L
CO2 emissions-
338g/km

Performance charts

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

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAUDIS6 (C8)2.9 TFSI V6AUDIS6 (4B/C5)4.2 V8
Acceleration checkpoints
0-60 mph
0-97 km/h
4.3 s
5.4 s
0-100 km/h
0-62 mph
4.5 s
5.7 s
0-200 km/h
0-124 mph
13.6 s
18.0 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Limited
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
2.2 s
2.5 s
330 ft
101 m
5.6 s
6.2 s
1/8 mile
201 m
8.2 s
9.1 s
1000 ft
305 m
10.5 s
11.6 s
1/4 mile
402 m
12.4 s
13.7 s
Trap speed
1/4 mile
402 m
192 km/h
119 mph
176 km/h
109 mph

Power comparison

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

Chart data table
VehicleValue
AUDIS6 (C8)2.9 TFSI V6
444 hp
331 kW
AUDIS6 (4B/C5)4.2 V8
340 hp
254 kW

AUDI S6 (C8) 2.9 TFSI V6 has 104 hp more than AUDI S6 (4B/C5) 4.2 V8.

The biggest power difference is between AUDI S6 (4B/C5) 4.2 V8 and AUDI S6 (C8) 2.9 TFSI V6: 104 hp (78 kW).

Torque comparison

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

Chart data table
VehicleValue
AUDIS6 (C8)2.9 TFSI V6
600 Nm
443 lb-ft
AUDIS6 (4B/C5)4.2 V8
420 Nm
310 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
AUDIS6 (C8)2.9 TFSI V6
2,035 kg
4,486 lb
AUDIS6 (4B/C5)4.2 V8
1,735 kg
3,825 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)2.9 TFSI V6
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
AUDIS6 (4B/C5)4.2 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
AUDIS6 (C8)2.9 TFSI V64.5 s
AUDIS6 (4B/C5)4.2 V85.7 s

The biggest 0-100 km/h difference is between AUDI S6 (C8) 2.9 TFSI V6 and AUDI S6 (4B/C5) 4.2 V8: 1.2 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)2.9 TFSI V6
10.7 L/100 km
22.0 mpg US
26.4 mpg UK
AUDIS6 (4B/C5)4.2 V8
14.1 L/100 km
16.7 mpg US
20.0 mpg UK

The biggest fuel consumption difference is between AUDI S6 (C8) 2.9 TFSI V6 and AUDI S6 (4B/C5) 4.2 V8: 3.4 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)2.9 TFSI V6
218 hp/t
163 kW/t
4.6 kg/hp
AUDIS6 (4B/C5)4.2 V8
196 hp/t
146 kW/t
5.1 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
AUDIS6 (C8)2.9 TFSI V6
682 km
424 mi
AUDIS6 (4B/C5)4.2 V8
582 km
361 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
AUDIS6 (C8)2.9 TFSI V6
444 hp
331 kW
4.5 s
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
AUDIS6 (4B/C5)4.2 V8
340 hp
254 kW
5.7 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
AUDIS6 (C8)2.9 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
1,446 mm
56.9 in
AUDIS6 (4B/C5)4.2 V8
Power
340 hp
254 kW
0-100 km/h5.7 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Doors/seats
4 doors
5 seats
Trunk
434 L
15.3 cu ft
Length
4,833 mm
190.3 in
Height
1,443 mm
56.8 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)2.9 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 (4B/C5)4.2 V8
Power
340 hp
254 kW
0-100 km/h5.7 s
Top speed
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
14.1 L/100 km
16.7 mpg US
20.0 mpg UK

AUDI S6 (C8) 2.9 TFSI 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
AUDIS6 (C8)2.9 TFSI V6
10.7 L/100 km
22.0 mpg US
26.4 mpg UK
4.5 s
AUDIS6 (4B/C5)4.2 V8
14.1 L/100 km
16.7 mpg US
20.0 mpg UK
5.7 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
AUDIS6 (C8)2.9 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 (4B/C5)4.2 V8
196 hp/t
146 kW/t
5.1 kg/hp
14.1 L/100 km
16.7 mpg US
20.0 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAUDIS6 (C8)2.9 TFSI V6AUDIS6 (4B/C5)4.2 V8
Power
444 hp
331 kW
340 hp
254 kW
Torque
600 Nm
443 lb-ft
420 Nm
310 lb-ft
Acceleration
4.5 s
5.7 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Unrestricted
260 km/h162 mph
Restricted
250 km/h155 mph
Lightness
2,035 kg
4,486 lb
1,735 kg
3,825 lb
Fuel consumption
10.7 L/100 km
22.0 mpg US
26.4 mpg UK
14.1 L/100 km
16.7 mpg US
20.0 mpg UK
Practicality
Doors/seats
4 doors
5 seats
Trunk
388 L
13.7 cu ft
Length
4,954 mm
195.0 in
Height
1,446 mm
56.9 in
Doors/seats
4 doors
5 seats
Trunk
434 L
15.3 cu ft
Length
4,833 mm
190.3 in
Height
1,443 mm
56.8 in
Range score
682 km
424 mi
582 km
361 mi
CO2 score
-
338 g/km
Trunk score
388 L
13.7 cu ft
434 L
15.3 cu ft
Power-to-weight score
218 hp/t
163 kW/t
4.6 kg/hp
196 hp/t
146 kW/t
5.1 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) 2.9 TFSI V6AUDI S6 (4B/C5) 4.2 V8
Consumption10.7 L/100 km22 mpg US26.4 mpg UK14.1 L/100 km16.7 mpg US20 mpg UK
Cost / 100 km18.72 LC100 km24.68 LC100 km
Cost / 100 mi30.13 LC100 mi39.71 LC100 mi
Annual fuel used1,605 L424 US gal353 UK gal2,115 L559 US gal465 UK gal
Annual fuel cost2,809 LC/year3,701 LC/year

Head-to-head comparisons

AUDI S6 (C8) 2.9 TFSI V6

  • Has 104 hp more
  • Has 180 Nm more
  • Is 1.2 s quicker from 0-100 km/h
  • Has 5 km/h (3 mph) higher top speed
  • Uses 3.4 L/100 km less fuel
  • Has 22 hp/t better power-to-weight
  • Has 101 km (63 mi) more estimated range

Pros

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

Cons

  • Heaviest
  • Smallest trunk

AUDI S6 (4B/C5) 4.2 V8

  • Is 300 kg lighter
  • Has 46 L more trunk volume

Pros

  • Lightest
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Highest combined fuel consumption
  • Lowest top speed

Choose cars to compare

Brand
Model
Generation
Engine or modification
AUDI S6 (C8) 2.9 TFSI V6
AUDI S6 (4B/C5) 4.2 V8
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2 vehicles selected

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