Car comparison

AUDI S8 (D5) · Facelift 2021 4.0 TFSI V8vsRolls-Royce Ghost I · Facelift 2014 6.6 V12

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

New comparison

AUDI S8 (D5) · Facelift 2021

4.0 TFSI V8

571 hp3996 ccGasolineAWDAutomaticTwin-turboSedan2021-present
VS

Rolls-Royce Ghost I · Facelift 2014

6.6 V12

612 hp6592 ccGasolineRWDAutomaticTwin-turboSedan2016-2020

Comparison overview

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

Best choices

AUDI S8 (D5) Facelift 2021 4.0 TFSI V8

  • Quickest 0-100 km/h
    3.8 s
  • Fastest top speed
    265 km/h
    165 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Lightest
    2,220 kg
    4,894 lb
  • Best power-to-weight
    257 hp/t
    192 kW/t
    3.9 kg/hp
  • Lowest combined fuel consumption
    10.8 L/100 km
    21.8 mpg US
    26.2 mpg UK
  • Lowest city consumption
    15.1 L/100 km
    15.6 mpg US
    18.7 mpg UK
  • Lowest highway consumption
    8.2 L/100 km
    28.7 mpg US
    34.4 mpg UK
  • Best estimated range
    759 km
    472 mi
  • Largest trunk
    505 L
  • Best overall score
    82/100
  • Best performance score
    85/100
  • Best economy score
    78/100
  • Best practicality score
    76/100

Specification comparison

Specification comparison
ModelAUDIS8 (D5)Facelift 20214.0 TFSI V8Rolls-RoyceGhost IFacelift 20146.6 V12
Power
571hp426kW
612hp456kW
Torque
800Nm590lb-ft
840Nm620lb-ft
Curb weight
2,220kg4,894lb
2,490kg5,490lb
Gross weight
2,835kg6,250lb
2,940kg6,482lb
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
36.7s99% target: 262 km/h / 163 mph
Calculated
52.2s99% target: 262 km/h / 163 mph
Calculated
0-100 km/h
3.8s
4.8s
0-200 km/h
11.2s
Calculated
15.0s
Calculated
0-60 mph
3.6s
Calculated
4.6s
Calculated
Fuel consumption
10.8L/100 km21.8mpg US26.2mpg UK
14.6L/100 km16.1mpg US19.3mpg UK
Fuel consumption city
15.1L/100 km15.6mpg US18.7mpg UK
22.2L/100 km10.6mpg US12.7mpg UK
Fuel consumption highway
8.2L/100 km28.7mpg US34.4mpg UK
10.1L/100 km23.3mpg US28.0mpg UK
Quarter mile
11.6s
Calculated
12.8s
Calculated
Power-to-weight
257hp/t192kW/t117hp/1000 lb
Calculated
246hp/t183kW/t111hp/1000 lb
Calculated
Torque-to-weight
360Nm/t241lb-ft/ton
Calculated
337Nm/t226lb-ft/ton
Calculated
Estimated range
759km472mi
Calculated
562km349mi
Calculated
Displacement
3,996cc244cu in
6,592cc402cu in
Length
5,190mm204in
5,399mm213in
Width
1,945mm77in
1,948mm77in
Height
1,475mm58in
1,550mm61in
Wheelbase
2,998mm118in
3,295mm130in
Front track
1,629mm64in
1,622mm64in
Rear track
1,614mm64in
1,660mm65in
Trunk volume
505L
490L
Doors
4
4
Seats
5
5
Fuel tank
82L
82L
CO2 emissions-
333g/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 (D5) Facelift 2021 4.0 TFSI V8Rolls-Royce Ghost I Facelift 2014 6.6 V12PowerTorque
  • AUDI S8 (D5) Facelift 2021 4.0 TFSI V8: Power / Torque
  • Rolls-Royce Ghost I Facelift 2014 6.6 V12: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
AUDIS8 (D5)Facelift 20214.0 TFSI V86,000 rpm2,050-4,500 rpm6,250 rpm
Rolls-RoyceGhost IFacelift 20146.6 V125,250 rpm1,650-5,000 rpm5,500 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAUDIS8 (D5)Facelift 20214.0 TFSI V8Rolls-RoyceGhost IFacelift 20146.6 V12
Acceleration checkpoints
0-60 mph
0-97 km/h
3.6 s
4.6 s
0-100 km/h
0-62 mph
3.8 s
4.8 s
0-200 km/h
0-124 mph
11.2 s
15.0 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Limited
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Limited
Drag race simulation
60 ft
18 m
2.1 s
2.3 s
330 ft
101 m
5.2 s
5.7 s
1/8 mile
201 m
7.7 s
8.5 s
1000 ft
305 m
9.8 s
10.8 s
1/4 mile
402 m
11.6 s
12.8 s
Trap speed
1/4 mile
402 m
203 km/h
126 mph
186 km/h
115 mph

Power comparison

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

Chart data table
VehicleValue
AUDIS8 (D5)Facelift 20214.0 TFSI V8
571 hp
426 kW
Rolls-RoyceGhost IFacelift 20146.6 V12
612 hp
456 kW

Rolls-Royce Ghost I Facelift 2014 6.6 V12 has 41 hp more than AUDI S8 (D5) Facelift 2021 4.0 TFSI V8.

The biggest power difference is between AUDI S8 (D5) Facelift 2021 4.0 TFSI V8 and Rolls-Royce Ghost I Facelift 2014 6.6 V12: 41 hp (31 kW).

Torque comparison

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

Chart data table
VehicleValue
AUDIS8 (D5)Facelift 20214.0 TFSI V8
800 Nm
590 lb-ft
Rolls-RoyceGhost IFacelift 20146.6 V12
840 Nm
620 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
AUDIS8 (D5)Facelift 20214.0 TFSI V8
2,220 kg
4,894 lb
Rolls-RoyceGhost IFacelift 20146.6 V12
2,490 kg
5,490 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 (D5)Facelift 20214.0 TFSI V8
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Rolls-RoyceGhost IFacelift 20146.6 V12
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 (D5)Facelift 20214.0 TFSI V83.8 s
Rolls-RoyceGhost IFacelift 20146.6 V124.8 s

Although Rolls-Royce Ghost I Facelift 2014 6.6 V12 has more power, AUDI S8 (D5) Facelift 2021 4.0 TFSI V8 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between AUDI S8 (D5) Facelift 2021 4.0 TFSI V8 and Rolls-Royce Ghost I Facelift 2014 6.6 V12: 1.0 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 (D5)Facelift 20214.0 TFSI V8
10.8 L/100 km
21.8 mpg US
26.2 mpg UK
Rolls-RoyceGhost IFacelift 20146.6 V12
14.6 L/100 km
16.1 mpg US
19.3 mpg UK

The biggest fuel consumption difference is between AUDI S8 (D5) Facelift 2021 4.0 TFSI V8 and Rolls-Royce Ghost I Facelift 2014 6.6 V12: 3.8 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
AUDIS8 (D5)Facelift 20214.0 TFSI V8
257 hp/t
192 kW/t
3.9 kg/hp
Rolls-RoyceGhost IFacelift 20146.6 V12
246 hp/t
183 kW/t
4.1 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
AUDIS8 (D5)Facelift 20214.0 TFSI V8
759 km
472 mi
Rolls-RoyceGhost IFacelift 20146.6 V12
562 km
349 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
AUDIS8 (D5)Facelift 20214.0 TFSI V8
571 hp
426 kW
3.8 s
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Rolls-RoyceGhost IFacelift 20146.6 V12
612 hp
456 kW
4.8 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 (D5)Facelift 20214.0 TFSI V8
Power
571 hp
426 kW
0-100 km/h3.8 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
4 doors
5 seats
Trunk
505 L
17.8 cu ft
Length
5,190 mm
204.3 in
Height
1,475 mm
58.1 in
Rolls-RoyceGhost IFacelift 20146.6 V12
Power
612 hp
456 kW
0-100 km/h4.8 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
4 doors
5 seats
Trunk
490 L
17.3 cu ft
Length
5,399 mm
212.6 in
Height
1,550 mm
61.0 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 (D5)Facelift 20214.0 TFSI V8
Power
571 hp
426 kW
0-100 km/h3.8 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
10.8 L/100 km
21.8 mpg US
26.2 mpg UK
Rolls-RoyceGhost IFacelift 20146.6 V12
Power
612 hp
456 kW
0-100 km/h4.8 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
14.6 L/100 km
16.1 mpg US
19.3 mpg UK

AUDI S8 (D5) Facelift 2021 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 (D5)Facelift 20214.0 TFSI V8
10.8 L/100 km
21.8 mpg US
26.2 mpg UK
3.8 s
Rolls-RoyceGhost IFacelift 20146.6 V12
14.6 L/100 km
16.1 mpg US
19.3 mpg UK
4.8 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 (D5)Facelift 20214.0 TFSI V8
257 hp/t
192 kW/t
3.9 kg/hp
10.8 L/100 km
21.8 mpg US
26.2 mpg UK
Rolls-RoyceGhost IFacelift 20146.6 V12
246 hp/t
183 kW/t
4.1 kg/hp
14.6 L/100 km
16.1 mpg US
19.3 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAUDIS8 (D5)Facelift 20214.0 TFSI V8Rolls-RoyceGhost IFacelift 20146.6 V12
Power
571 hp
426 kW
612 hp
456 kW
Torque
800 Nm
590 lb-ft
840 Nm
620 lb-ft
Acceleration
3.8 s
4.8 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Lightness
2,220 kg
4,894 lb
2,490 kg
5,490 lb
Fuel consumption
10.8 L/100 km
21.8 mpg US
26.2 mpg UK
14.6 L/100 km
16.1 mpg US
19.3 mpg UK
Practicality
Doors/seats
4 doors
5 seats
Trunk
505 L
17.8 cu ft
Length
5,190 mm
204.3 in
Height
1,475 mm
58.1 in
Doors/seats
4 doors
5 seats
Trunk
490 L
17.3 cu ft
Length
5,399 mm
212.6 in
Height
1,550 mm
61.0 in
Range score
759 km
472 mi
562 km
349 mi
CO2 score
-
333 g/km
Trunk score
505 L
17.8 cu ft
490 L
17.3 cu ft
Power-to-weight score
257 hp/t
192 kW/t
3.9 kg/hp
246 hp/t
183 kW/t
4.1 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 S8 (D5) Facelift 2021 4.0 TFSI V8Rolls-Royce Ghost I Facelift 2014 6.6 V12
Consumption10.8 L/100 km21.8 mpg US26.2 mpg UK14.6 L/100 km16.1 mpg US19.3 mpg UK
Cost / 100 km18.90 LC100 km25.55 LC100 km
Cost / 100 mi30.42 LC100 mi41.12 LC100 mi
Annual fuel used1,620 L428 US gal356 UK gal2,190 L579 US gal482 UK gal
Annual fuel cost2,835 LC/year3,833 LC/year

Head-to-head comparisons

AUDI S8 (D5) Facelift 2021 4.0 TFSI V8

  • Is 270 kg lighter
  • Is 1.0 s quicker from 0-100 km/h
  • Uses 3.8 L/100 km less fuel
  • Has 11 hp/t better power-to-weight
  • Has 198 km (123 mi) more estimated range
  • Has 15 L more trunk volume

Pros

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

Cons

  • Lowest power

Choose cars to compare

Brand
Model
Generation
Engine or modification
AUDI S8 (D5) 4.0 TFSI V8
Rolls-Royce Ghost I 6.6 V12
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2 vehicles selected

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