Car comparison

AUDI S8 (D4) 4.0 TFSI V8vsAUDI A8 (D4/4H) 4.0 TFSI V8

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

New comparison

AUDI S8 (D4)

4.0 TFSI V8

520 hp3993 ccGasolineAWDAutomaticTwin-turboSedan2012-2013
VS

AUDI A8 (D4/4H)

4.0 TFSI V8

420 hp3993 ccGasolineAWDAutomaticTwin-turboSedan2012-2013

Comparison overview

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

Best choices

AUDI S8 (D4) 4.0 TFSI V8

  • Quickest 0-100 km/h
    4.2 s
  • Fastest top speed
    265 km/h
    165 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    520 hp
    388 kW
  • Highest torque
    650 Nm
    479 lb-ft
  • Best power-to-weight
    263 hp/t
    196 kW/t
    3.8 kg/hp
  • Largest trunk
    520 L
  • Best overall score
    81/100
  • Best performance score
    83/100
  • Best practicality score
    77/100

AUDI A8 (D4/4H) 4.0 TFSI V8

  • Lightest
    1,895 kg
    4,178 lb
  • Lowest combined fuel consumption
    9.4 L/100 km
    25.0 mpg US
    30.1 mpg UK
  • Lowest city consumption
    13.0 L/100 km
    18.1 mpg US
    21.7 mpg UK
  • Lowest highway consumption
    7.3 L/100 km
    32.2 mpg US
    38.7 mpg UK
  • Lowest CO2 emissions
    219 g/km
  • Best estimated range
    957 km
    595 mi
  • Best economy score
    82/100

Specification comparison

Specification comparison
ModelAUDIS8 (D4)4.0 TFSI V8AUDIA8 (D4/4H)4.0 TFSI V8
Power
520hp388kW
420hp313kW
Torque
650Nm479lb-ft
600Nm443lb-ft
Curb weight
1,975kg4,354lb
1,895kg4,178lb
Gross weight
2,575kg5,677lb
2,545kg5,611lb
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
39.4s99% target: 262 km/h / 163 mph
Calculated
45.0s99% target: 262 km/h / 163 mph
Calculated
0-100 km/h
4.2s
4.6s
0-200 km/h
12.3s
Calculated
13.7s
Calculated
0-60 mph
4.0s
Calculated
4.4s
Calculated
Fuel consumption
10.1L/100 km23.3mpg US28.0mpg UK
9.4L/100 km25mpg US30.1mpg UK
Fuel consumption city
14.4L/100 km16.3mpg US19.6mpg UK
13L/100 km18.1mpg US21.7mpg UK
Fuel consumption highway
7.6L/100 km30.9mpg US37.2mpg UK
7.3L/100 km32.2mpg US38.7mpg UK
Quarter mile
12.0s
Calculated
12.5s
Calculated
Power-to-weight
263hp/t196kW/t119hp/1000 lb
Calculated
222hp/t165kW/t101hp/1000 lb
Calculated
Torque-to-weight
329Nm/t220lb-ft/ton
Calculated
317Nm/t212lb-ft/ton
Calculated
Estimated range
891km554mi
Calculated
957km595mi
Calculated
Displacement
3,993cc244cu in
3,993cc244cu in
Length
5,146mm203in
5,137mm202in
Width
1,949mm77in
1,949mm77in
Height
1,458mm57in
1,460mm57in
Wheelbase
2,994mm118in
2,992mm118in
Front track
1,632mm64in
1,644mm65in
Rear track
1,623mm64in
1,635mm64in
Trunk volume
520L
510L
Max trunk volume-
906L
Doors
4
4
Seats
5
5
Fuel tank
90L
90L
CO2 emissions
235g/km
219g/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 S8 (D4) 4.0 TFSI V8AUDI A8 (D4/4H) 4.0 TFSI V8PowerTorque
  • AUDI S8 (D4) 4.0 TFSI V8: Power / Torque
  • AUDI A8 (D4/4H) 4.0 TFSI V8: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
AUDIS8 (D4)4.0 TFSI V86,000 rpm1,700-5,500 rpm6,250 rpm
AUDIA8 (D4/4H)4.0 TFSI V85,000 rpm1,500-4,500 rpm5,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAUDIS8 (D4)4.0 TFSI V8AUDIA8 (D4/4H)4.0 TFSI V8
Acceleration checkpoints
0-60 mph
0-97 km/h
4.0 s
4.4 s
0-100 km/h
0-62 mph
4.2 s
4.6 s
0-200 km/h
0-124 mph
12.3 s
13.7 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely 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
5.4 s
5.7 s
1/8 mile
201 m
8.0 s
8.3 s
1000 ft
305 m
10.2 s
10.6 s
1/4 mile
402 m
12.0 s
12.5 s
Trap speed
1/4 mile
402 m
198 km/h
123 mph
192 km/h
119 mph

Power comparison

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

Chart data table
VehicleValue
AUDIS8 (D4)4.0 TFSI V8
520 hp
388 kW
AUDIA8 (D4/4H)4.0 TFSI V8
420 hp
313 kW

AUDI S8 (D4) 4.0 TFSI V8 has 100 hp more than AUDI A8 (D4/4H) 4.0 TFSI V8.

The biggest power difference is between AUDI A8 (D4/4H) 4.0 TFSI V8 and AUDI S8 (D4) 4.0 TFSI V8: 100 hp (75 kW).

Torque comparison

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

Chart data table
VehicleValue
AUDIS8 (D4)4.0 TFSI V8
650 Nm
479 lb-ft
AUDIA8 (D4/4H)4.0 TFSI V8
600 Nm
443 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
AUDIS8 (D4)4.0 TFSI V8
1,975 kg
4,354 lb
AUDIA8 (D4/4H)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
AUDIS8 (D4)4.0 TFSI V8
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
AUDIA8 (D4/4H)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
AUDIS8 (D4)4.0 TFSI V84.2 s
AUDIA8 (D4/4H)4.0 TFSI V84.6 s

The biggest 0-100 km/h difference is between AUDI S8 (D4) 4.0 TFSI V8 and AUDI A8 (D4/4H) 4.0 TFSI V8: 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
AUDIS8 (D4)4.0 TFSI V8
10.1 L/100 km
23.3 mpg US
28.0 mpg UK
AUDIA8 (D4/4H)4.0 TFSI V8
9.4 L/100 km
25.0 mpg US
30.1 mpg UK

The biggest fuel consumption difference is between AUDI A8 (D4/4H) 4.0 TFSI V8 and AUDI S8 (D4) 4.0 TFSI V8: 0.7 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
AUDIS8 (D4)4.0 TFSI V8
263 hp/t
196 kW/t
3.8 kg/hp
AUDIA8 (D4/4H)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
AUDIS8 (D4)4.0 TFSI V8
891 km
554 mi
AUDIA8 (D4/4H)4.0 TFSI V8
957 km
595 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
AUDIS8 (D4)4.0 TFSI V8
520 hp
388 kW
4.2 s
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
AUDIA8 (D4/4H)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
AUDIS8 (D4)4.0 TFSI V8
Power
520 hp
388 kW
0-100 km/h4.2 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
4 doors
5 seats
Trunk
520 L
18.4 cu ft
Length
5,146 mm
202.6 in
Height
1,458 mm
57.4 in
AUDIA8 (D4/4H)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
510 L
18.0 cu ft
Length
5,137 mm
202.2 in
Height
1,460 mm
57.5 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
AUDIS8 (D4)4.0 TFSI V8
Power
520 hp
388 kW
0-100 km/h4.2 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
10.1 L/100 km
23.3 mpg US
28.0 mpg UK
AUDIA8 (D4/4H)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
9.4 L/100 km
25.0 mpg US
30.1 mpg UK

AUDI S8 (D4) 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
AUDIS8 (D4)4.0 TFSI V8
10.1 L/100 km
23.3 mpg US
28.0 mpg UK
4.2 s
AUDIA8 (D4/4H)4.0 TFSI V8
9.4 L/100 km
25.0 mpg US
30.1 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
AUDIS8 (D4)4.0 TFSI V8
263 hp/t
196 kW/t
3.8 kg/hp
10.1 L/100 km
23.3 mpg US
28.0 mpg UK
AUDIA8 (D4/4H)4.0 TFSI V8
222 hp/t
165 kW/t
4.5 kg/hp
9.4 L/100 km
25.0 mpg US
30.1 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAUDIS8 (D4)4.0 TFSI V8AUDIA8 (D4/4H)4.0 TFSI V8
Power
520 hp
388 kW
420 hp
313 kW
Torque
650 Nm
479 lb-ft
600 Nm
443 lb-ft
Acceleration
4.2 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
1,975 kg
4,354 lb
1,895 kg
4,178 lb
Fuel consumption
10.1 L/100 km
23.3 mpg US
28.0 mpg UK
9.4 L/100 km
25.0 mpg US
30.1 mpg UK
Practicality
Doors/seats
4 doors
5 seats
Trunk
520 L
18.4 cu ft
Length
5,146 mm
202.6 in
Height
1,458 mm
57.4 in
Doors/seats
4 doors
5 seats
Trunk
510 L
18.0 cu ft
Length
5,137 mm
202.2 in
Height
1,460 mm
57.5 in
Range score
891 km
554 mi
957 km
595 mi
CO2 score
235 g/km
219 g/km
Trunk score
520 L
18.4 cu ft
510 L
18.0 cu ft
Power-to-weight score
263 hp/t
196 kW/t
3.8 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 S8 (D4) 4.0 TFSI V8AUDI A8 (D4/4H) 4.0 TFSI V8
Consumption10.1 L/100 km23.3 mpg US28 mpg UK9.4 L/100 km25 mpg US30.1 mpg UK
Cost / 100 km17.68 LC100 km16.45 LC100 km
Cost / 100 mi28.45 LC100 mi26.47 LC100 mi
Annual fuel used1,515 L400 US gal333 UK gal1,410 L372 US gal310 UK gal
Annual fuel cost2,651 LC/year2,468 LC/year

Head-to-head comparisons

AUDI S8 (D4) 4.0 TFSI V8

  • Has 100 hp more
  • Has 50 Nm more
  • Is 0.4 s quicker from 0-100 km/h
  • Has 42 hp/t better power-to-weight
  • Has 10 L more trunk volume

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Most powerful
  • Highest torque
  • Best power-to-weight ratio
  • Largest trunk

Cons

  • Highest combined fuel consumption
  • Heaviest
  • Highest CO2 emissions

AUDI A8 (D4/4H) 4.0 TFSI V8

  • Is 80 kg lighter
  • Uses 0.7 L/100 km less fuel
  • Has 66 km (41 mi) more estimated range
  • Emits 16 g/km less CO2

Pros

  • Lightest
  • Lowest combined fuel consumption
  • Best estimated range

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
AUDI S8 (D4) 4.0 TFSI V8
AUDI A8 (D4/4H) 4.0 TFSI V8
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2 vehicles selected

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AUDI S8 (D4) 4.0 TFSI V8 vs AUDI A8 (D4/4H) 4.0 TFSI V8 - car comparison - FastVsFaster