Car comparison

AUDI S8 (D5) · Facelift 2021 4.0 TFSI V8vsNIO ET9 100 kWh

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

NIO ET9

100 kWh

707 hpElectricAWDAutomaticSedan2024-present

Comparison overview

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

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
Highest torque
800 Nm
590 lb-ft
Lightest
2,220 kg
4,894 lb
Best overall score
82/100
Best performance score
85/100
Best economy score
78/100
Best practicality score
76/100

NIO ET9 100 kWh

Most powerful
707 hp
527 kW
Best power-to-weight
262 hp/t
195 kW/t
3.8 kg/hp
Largest trunk
544 L

Specification comparison

Specification comparison
Model	AUDIS8 (D5)Facelift 20214.0 TFSI V8	NIOET9100 kWh
Power	571hp426kW	707hp527kW
Torque	800Nm590lb-ft	700Nm516lb-ft
Curb weight	2,220kg4,894lb	2,700kg5,952lb
Gross weight	2,835kg6,250lb	3,100kg6,834lb
Top speed	Unrestricted 265 km/h165 mph Restricted 250 km/h155 mph Calculated	Unrestricted 235 km/h146 mph Restricted 220 km/h137 mph Calculated
To 99% top speed	36.7s99% target: 262 km/h / 163 mph Calculated	36.2s99% target: 233 km/h / 145 mph Calculated
0-100 km/h	3.8s	4.3s
0-200 km/h	11.2s Calculated	14.9s Calculated
0-60 mph	3.6s Calculated	4.1s Calculated
Fuel consumption	10.8L/100 km21.8mpg US26.2mpg UK	-
Fuel consumption city	15.1L/100 km15.6mpg US18.7mpg UK	-
Fuel consumption highway	8.2L/100 km28.7mpg US34.4mpg UK	-
Quarter mile	11.6s Calculated	12.3s Calculated
Power-to-weight	257hp/t192kW/t117hp/1000 lb Calculated	262hp/t195kW/t119hp/1000 lb Calculated
Torque-to-weight	360Nm/t241lb-ft/ton Calculated	259Nm/t173lb-ft/ton Calculated
Estimated range	759km472mi Calculated	-
Displacement	3,996cc244cu in	-
Length	5,190mm204in	5,325mm210in
Width	1,945mm77in	2,017mm79in
Height	1,475mm58in	1,621mm64in
Wheelbase	2,998mm118in	3,250mm128in
Front track	1,629mm64in	1,731mm68in
Rear track	1,614mm64in	1,758mm69in
Trunk volume	505L	544L
Doors	4	4
Seats	5	4
Fuel tank	82L	-

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
Metric	AUDIS8 (D5)Facelift 20214.0 TFSI V8	NIOET9100 kWh
	Acceleration checkpoints
0-60 mph 0-97 km/h	3.6 s	4.1 s
0-100 km/h 0-62 mph	3.8 s	4.3 s
0-200 km/h 0-124 mph	11.2 s	14.9 s
Top speed	Unrestricted 265 km/h165 mph Restricted 250 km/h155 mph Limited	Unrestricted 235 km/h146 mph Restricted 220 km/h137 mph Likely limited
	Drag race simulation
60 ft 18 m	2.1 s	2.2 s
330 ft 101 m	5.2 s	5.5 s
1/8 mile 201 m	7.7 s	8.1 s
1000 ft 305 m	9.8 s	10.4 s
1/4 mile 402 m	11.6 s	12.3 s
Trap speed 1/4 mile 402 m	203 km/h 126 mph	187 km/h 116 mph

Power comparison

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

Chart data table
Vehicle	Value
AUDIS8 (D5)Facelift 20214.0 TFSI V8	571 hp 426 kW
NIOET9100 kWh	707 hp 527 kW

NIO ET9 100 kWh has 136 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 NIO ET9 100 kWh: 136 hp (101 kW).

Torque comparison

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

Chart data table
Vehicle	Value
AUDIS8 (D5)Facelift 20214.0 TFSI V8	800 Nm 590 lb-ft
NIOET9100 kWh	700 Nm 516 lb-ft

Curb weight comparison

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

Chart data table
Vehicle	Value
AUDIS8 (D5)Facelift 20214.0 TFSI V8	2,220 kg 4,894 lb
NIOET9100 kWh	2,700 kg 5,952 lb

Top speed without limiter comparison

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

Chart data table
Vehicle	Value
AUDIS8 (D5)Facelift 20214.0 TFSI V8	Unrestricted 265 km/h165 mph Restricted 250 km/h155 mph
NIOET9100 kWh	Unrestricted 235 km/h146 mph Restricted 220 km/h137 mph

0-100 km/h comparison

Bar comparison chart for 0-100 km/h. Lower is better · seconds

Chart data table
Vehicle	Value
AUDIS8 (D5)Facelift 20214.0 TFSI V8	3.8 s
NIOET9100 kWh	4.3 s

Although NIO ET9 100 kWh 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 NIO ET9 100 kWh: 0.5 s.

Power-to-weight comparison

Bar comparison chart for Power-to-weight. Higher is better · hp/t / kW/t

Chart data table
Vehicle	Value
AUDIS8 (D5)Facelift 20214.0 TFSI V8	257 hp/t 192 kW/t 3.9 kg/hp
NIOET9100 kWh	262 hp/t 195 kW/t 3.8 kg/hp

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
Vehicle	Power	Acceleration	Top 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
NIOET9100 kWh	707 hp 527 kW	4.3 s	Unrestricted 235 km/h146 mph Restricted 220 km/h137 mph

Most attractive quadrant

Scatter chart with performance score on the X axis and practicality score on the Y axis.

Vehicle

Performance score

Practicality score

AUDIS8 (D5)Facelift 20214.0 TFSI V8

Power	571 hp 426 kW
0-100 km/h	3.8 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

NIOET9100 kWh

Power	707 hp 527 kW
0-100 km/h	4.3 s
Top speed Unrestricted 235 km/h146 mph Restricted 220 km/h137 mph

Doors/seats	4 doors 4 seats
Trunk	544 L 19.2 cu ft
Length	5,325 mm 209.6 in
Height	1,621 mm 63.8 in

Detailed score breakdown

Vehicle

AUDIS8 (D5)Facelift 20214.0 TFSI V8

NIOET9100 kWh

Power

571 hp

426 kW

707 hp

527 kW

Torque

800 Nm

590 lb-ft

700 Nm

516 lb-ft

Acceleration

3.8 s

4.3 s

Top speed

Unrestricted

265 km/h165 mph

Restricted

250 km/h155 mph

Unrestricted

235 km/h146 mph

Restricted

220 km/h137 mph

Lightness

2,220 kg

4,894 lb

2,700 kg

5,952 lb

Fuel consumption

10.8 L/100 km

21.8 mpg US

26.2 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 4 seats
Trunk	544 L 19.2 cu ft
Length	5,325 mm 209.6 in
Height	1,621 mm 63.8 in

Range score

759 km

472 mi

Trunk score

505 L

17.8 cu ft

544 L

19.2 cu ft

Power-to-weight score

257 hp/t

192 kW/t

3.9 kg/hp

262 hp/t

195 kW/t

3.8 kg/hp

Overall

Fixed score

Fuel cost and annual usage

Estimate running costs from combined consumption, your annual distance, and the fuel price in your local currency.

Average annual distanceDistance unitFuel price in your local currencyPrice unit

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
Vehicle	AUDI S8 (D5) Facelift 2021 4.0 TFSI V8
Consumption	10.8 L/100 km21.8 mpg US26.2 mpg UK
Cost / 100 km	18.90 LC100 km
Cost / 100 mi	30.42 LC100 mi
Annual fuel used	1,620 L428 US gal356 UK gal
Annual fuel cost	2,835 LC/year