Car comparison

AUDI A8 (D5) · Facelift 2021 55 TFSI V6vsAUDI A8 (D3/4E) 4.2 V8 40V

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

New comparison

AUDI A8 (D5) · Facelift 2021

55 TFSI V6

340 hp2995 ccGasolineAWDAutomaticTurbochargedSedan2021-present
VS

AUDI A8 (D3/4E)

4.2 V8 40V

335 hp4172 ccGasolineAWDAutomaticNaturally aspiratedSedan2002-2005

Comparison overview

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

Best choices

AUDI A8 (D5) Facelift 2021 55 TFSI V6

  • Quickest 0-100 km/h
    5.6 s
  • Fastest top speed
    265 km/h
    165 mph Unrestricted
    250 km/h
    155 mph Restricted
  • Most powerful
    340 hp
    254 kW
  • Highest torque
    500 Nm
    369 lb-ft
  • Lowest combined fuel consumption
    8.3 L/100 km
    28.3 mpg US
    34.0 mpg UK
  • Lowest city consumption
    11.3 L/100 km
    20.8 mpg US
    25.0 mpg UK
  • Lowest highway consumption
    6.6 L/100 km
    35.6 mpg US
    42.8 mpg UK
  • Best estimated range
    988 km
    614 mi
  • Largest trunk
    505 L
  • Best overall score
    71/100
  • Best performance score
    69/100
  • Best economy score
    85/100
  • Best practicality score
    76/100

Specification comparison

Specification comparison
ModelAUDIA8 (D5)Facelift 202155 TFSI V6AUDIA8 (D3/4E)4.2 V8 40V
Power
340hp254kW
335hp250kW
Torque
500Nm369lb-ft
430Nm317lb-ft
Curb weight
1,960kg4,321lb
1,780kg3,924lb
Gross weight
2,710kg5,975lb
2,380kg5,247lb
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
58.5s99% target: 262 km/h / 163 mph
Calculated
63.4s99% target: 262 km/h / 163 mph
Calculated
0-100 km/h
5.6s
6.3s
0-200 km/h
17.2s
Calculated
19.0s
Calculated
0-60 mph
5.4s
Calculated
6.0s
Calculated
Fuel consumption
8.3L/100 km28.3mpg US34.0mpg UK
12L/100 km19.6mpg US23.5mpg UK
Fuel consumption city
11.3L/100 km20.8mpg US25.0mpg UK
17.6L/100 km13.4mpg US16.1mpg UK
Fuel consumption highway
6.6L/100 km35.6mpg US42.8mpg UK
8.8L/100 km26.7mpg US32.1mpg UK
Quarter mile
13.6s
Calculated
14.2s
Calculated
Power-to-weight
173hp/t129kW/t79hp/1000 lb
Calculated
188hp/t140kW/t85hp/1000 lb
Calculated
Torque-to-weight
255Nm/t171lb-ft/ton
Calculated
242Nm/t162lb-ft/ton
Calculated
Estimated range
988km614mi
Calculated
750km466mi
Calculated
Displacement
2,995cc183cu in
4,172cc255cu in
Length
5,190mm204in
5,051mm199in
Width
1,945mm77in
1,894mm75in
Height
1,473mm58in
1,444mm57in
Wheelbase
2,998mm118in
2,944mm116in
Front track
1,645mm65in
1,629mm64in
Rear track
1,633mm64in
1,615mm64in
Trunk volume
505L
500L
Doors
4
4
Seats
5
5
Fuel tank
82L
90L
CO2 emissions-
288g/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 A8 (D5) Facelift 2021 55 TFSI V6AUDI A8 (D3/4E) 4.2 V8 40VPowerTorque
  • AUDI A8 (D5) Facelift 2021 55 TFSI V6: Power / Torque
  • AUDI A8 (D3/4E) 4.2 V8 40V: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
AUDIA8 (D5)Facelift 202155 TFSI V65,000-6,400 rpm1,370-4,500 rpm6,650 rpm
AUDIA8 (D3/4E)4.2 V8 40V6,500 rpm3,500 rpm6,750 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAUDIA8 (D5)Facelift 202155 TFSI V6AUDIA8 (D3/4E)4.2 V8 40V
Acceleration checkpoints
0-60 mph
0-97 km/h
5.4 s
6.0 s
0-100 km/h
0-62 mph
5.6 s
6.3 s
0-200 km/h
0-124 mph
17.2 s
19.0 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Limited
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
2.5 s
2.6 s
330 ft
101 m
6.1 s
6.5 s
1/8 mile
201 m
9.0 s
9.5 s
1000 ft
305 m
11.5 s
12.1 s
1/4 mile
402 m
13.6 s
14.2 s
Trap speed
1/4 mile
402 m
178 km/h
111 mph
173 km/h
107 mph

Power comparison

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

Chart data table
VehicleValue
AUDIA8 (D5)Facelift 202155 TFSI V6
340 hp
254 kW
AUDIA8 (D3/4E)4.2 V8 40V
335 hp
250 kW

AUDI A8 (D5) Facelift 2021 55 TFSI V6 has 5 hp more than AUDI A8 (D3/4E) 4.2 V8 40V.

The biggest power difference is between AUDI A8 (D3/4E) 4.2 V8 40V and AUDI A8 (D5) Facelift 2021 55 TFSI V6: 5 hp (4 kW).

Torque comparison

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

Chart data table
VehicleValue
AUDIA8 (D5)Facelift 202155 TFSI V6
500 Nm
369 lb-ft
AUDIA8 (D3/4E)4.2 V8 40V
430 Nm
317 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
AUDIA8 (D5)Facelift 202155 TFSI V6
1,960 kg
4,321 lb
AUDIA8 (D3/4E)4.2 V8 40V
1,780 kg
3,924 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
AUDIA8 (D5)Facelift 202155 TFSI V6
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
AUDIA8 (D3/4E)4.2 V8 40V
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
AUDIA8 (D5)Facelift 202155 TFSI V65.6 s
AUDIA8 (D3/4E)4.2 V8 40V6.3 s

The biggest 0-100 km/h difference is between AUDI A8 (D5) Facelift 2021 55 TFSI V6 and AUDI A8 (D3/4E) 4.2 V8 40V: 0.7 s.

Fuel consumption comparison

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

Chart data table
VehicleValue
AUDIA8 (D5)Facelift 202155 TFSI V6
8.3 L/100 km
28.3 mpg US
34.0 mpg UK
AUDIA8 (D3/4E)4.2 V8 40V
12.0 L/100 km
19.6 mpg US
23.5 mpg UK

The biggest fuel consumption difference is between AUDI A8 (D5) Facelift 2021 55 TFSI V6 and AUDI A8 (D3/4E) 4.2 V8 40V: 3.7 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
AUDIA8 (D5)Facelift 202155 TFSI V6
173 hp/t
129 kW/t
5.8 kg/hp
AUDIA8 (D3/4E)4.2 V8 40V
188 hp/t
140 kW/t
5.3 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
AUDIA8 (D5)Facelift 202155 TFSI V6
988 km
614 mi
AUDIA8 (D3/4E)4.2 V8 40V
750 km
466 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
AUDIA8 (D5)Facelift 202155 TFSI V6
340 hp
254 kW
5.6 s
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
AUDIA8 (D3/4E)4.2 V8 40V
335 hp
250 kW
6.3 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
AUDIA8 (D5)Facelift 202155 TFSI V6
Power
340 hp
254 kW
0-100 km/h5.6 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
1,473 mm
58.0 in
AUDIA8 (D3/4E)4.2 V8 40V
Power
335 hp
250 kW
0-100 km/h6.3 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Doors/seats
4 doors
5 seats
Trunk
500 L
17.7 cu ft
Length
5,051 mm
198.9 in
Height
1,444 mm
56.9 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
AUDIA8 (D5)Facelift 202155 TFSI V6
Power
340 hp
254 kW
0-100 km/h5.6 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
8.3 L/100 km
28.3 mpg US
34.0 mpg UK
AUDIA8 (D3/4E)4.2 V8 40V
Power
335 hp
250 kW
0-100 km/h6.3 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
12.0 L/100 km
19.6 mpg US
23.5 mpg UK

AUDI A8 (D5) Facelift 2021 55 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
AUDIA8 (D5)Facelift 202155 TFSI V6
8.3 L/100 km
28.3 mpg US
34.0 mpg UK
5.6 s
AUDIA8 (D3/4E)4.2 V8 40V
12.0 L/100 km
19.6 mpg US
23.5 mpg UK
6.3 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
AUDIA8 (D5)Facelift 202155 TFSI V6
173 hp/t
129 kW/t
5.8 kg/hp
8.3 L/100 km
28.3 mpg US
34.0 mpg UK
AUDIA8 (D3/4E)4.2 V8 40V
188 hp/t
140 kW/t
5.3 kg/hp
12.0 L/100 km
19.6 mpg US
23.5 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAUDIA8 (D5)Facelift 202155 TFSI V6AUDIA8 (D3/4E)4.2 V8 40V
Power
340 hp
254 kW
335 hp
250 kW
Torque
500 Nm
369 lb-ft
430 Nm
317 lb-ft
Acceleration
5.6 s
6.3 s
Top speed
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Lightness
1,960 kg
4,321 lb
1,780 kg
3,924 lb
Fuel consumption
8.3 L/100 km
28.3 mpg US
34.0 mpg UK
12.0 L/100 km
19.6 mpg US
23.5 mpg UK
Practicality
Doors/seats
4 doors
5 seats
Trunk
505 L
17.8 cu ft
Length
5,190 mm
204.3 in
Height
1,473 mm
58.0 in
Doors/seats
4 doors
5 seats
Trunk
500 L
17.7 cu ft
Length
5,051 mm
198.9 in
Height
1,444 mm
56.9 in
Range score
988 km
614 mi
750 km
466 mi
CO2 score
-
288 g/km
Trunk score
505 L
17.8 cu ft
500 L
17.7 cu ft
Power-to-weight score
173 hp/t
129 kW/t
5.8 kg/hp
188 hp/t
140 kW/t
5.3 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 A8 (D5) Facelift 2021 55 TFSI V6AUDI A8 (D3/4E) 4.2 V8 40V
Consumption8.3 L/100 km28.3 mpg US34 mpg UK12 L/100 km19.6 mpg US23.5 mpg UK
Cost / 100 km14.53 LC100 km21.00 LC100 km
Cost / 100 mi23.38 LC100 mi33.80 LC100 mi
Annual fuel used1,245 L329 US gal274 UK gal1,800 L476 US gal396 UK gal
Annual fuel cost2,179 LC/year3,150 LC/year

Head-to-head comparisons

AUDI A8 (D5) Facelift 2021 55 TFSI V6

  • Has 5 hp more
  • Has 70 Nm more
  • Is 0.7 s quicker from 0-100 km/h
  • Uses 3.7 L/100 km less fuel
  • Has 238 km (148 mi) more estimated range
  • Has 5 L more trunk volume

Pros

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

Cons

  • Heaviest

AUDI A8 (D3/4E) 4.2 V8 40V

  • Is 180 kg lighter
  • Has 15 hp/t better power-to-weight

Pros

  • Lightest
  • Best power-to-weight ratio

Cons

  • Slowest 0-100 km/h
  • Lowest power
  • Highest combined fuel consumption
  • Smallest trunk

Choose cars to compare

Brand
Model
Generation
Engine or modification
AUDI A8 (D5) 55 TFSI V6
AUDI A8 (D3/4E) 4.2 V8 40V
Compare selected cars
2 vehicles selected

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AUDI A8 (D5) · Facelift 2021 55 TFSI V6 vs AUDI A8 (D3/4E) 4.2 V8 40V - car comparison - FastVsFaster