Car comparison

Alfa Romeo Giulia (952) GTAm 2.9 V6vsAUDI S8 (D5) 4.0 TFSI V8

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

New comparison

Alfa Romeo Giulia (952)

GTAm 2.9 V6

540 hp2891 ccGasolineRWDAutomaticTurbochargedSedan2020-2021
VS

AUDI S8 (D5)

4.0 TFSI V8

571 hp3996 ccGasolineAWDAutomaticTwin-turboSedan2020-2021

Comparison overview

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

Best choices

AUDI S8 (D5) 4.0 TFSI V8

  • Most powerful
    571 hp
    426 kW
  • Highest torque
    800 Nm
    590 lb-ft
  • Lowest combined fuel consumption
    11.4 L/100 km
    20.6 mpg US
    24.8 mpg UK
  • Lowest CO2 emissions
    260 g/km
  • Best estimated range
    719 km
    447 mi
  • Largest trunk
    505 L
  • Best overall score
    82/100
  • Best economy score
    76/100
  • Best practicality score
    76/100

Alfa Romeo Giulia (952) GTAm 2.9 V6

  • Quickest 0-100 km/h
    3.6 s
  • Fastest top speed
    315 km/h
    196 mph Unrestricted
    300 km/h
    186 mph Restricted
  • Lightest
    1,580 kg
    3,483 lb
  • Best power-to-weight
    342 hp/t
    255 kW/t
    2.9 kg/hp
  • Best performance score
    90/100

Specification comparison

Specification comparison
ModelAlfa RomeoGiulia (952)GTAm 2.9 V6AUDIS8 (D5)4.0 TFSI V8
Power
540hp403kW
571hp426kW
Torque
600Nm443lb-ft
800Nm590lb-ft
Curb weight
1,580kg3,483lb
2,230kg4,916lb
Gross weight
1,870kg4,123lb
2,835kg6,250lb
Top speed
Unrestricted
315 km/h196 mph
Restricted
300 km/h186 mph
Calculated
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Calculated
To 99% top speed
36.1s99% target: 312 km/h / 194 mph
Calculated
36.3s99% target: 262 km/h / 163 mph
Calculated
0-100 km/h
3.6s
3.8s
0-200 km/h
8.8s
Calculated
11.2s
Calculated
0-60 mph
3.5s
Calculated
3.6s
Calculated
Fuel consumption
11.8L/100 km19.9mpg US23.9mpg UK
11.4L/100 km20.6mpg US24.8mpg UK
Quarter mile
11.0s
Calculated
11.6s
Calculated
Power-to-weight
342hp/t255kW/t155hp/1000 lb
Calculated
256hp/t191kW/t116hp/1000 lb
Calculated
Torque-to-weight
380Nm/t254lb-ft/ton
Calculated
359Nm/t240lb-ft/ton
Calculated
Estimated range
492km305mi
Calculated
719km447mi
Calculated
Displacement
2,891cc176cu in
3,996cc244cu in
Length
4,669mm184in
5,179mm204in
Width
1,923mm76in
1,945mm77in
Height
1,445mm57in
1,474mm58in
Wheelbase
2,820mm111in
2,998mm118in
Front track
1,580mm62in
1,628mm64in
Rear track
1,654mm65in
1,617mm64in
Trunk volume
480L
505L
Doors
4
4
Seats
2
5
Fuel tank
58L
82L
CO2 emissions
274g/km
260g/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.

Alfa Romeo Giulia (952) GTAm 2.9 V6AUDI S8 (D5) 4.0 TFSI V8PowerTorque
  • Alfa Romeo Giulia (952) GTAm 2.9 V6: Power / Torque
  • AUDI S8 (D5) 4.0 TFSI V8: Power / Torque
Dyno simulation data table
VehiclePeak power RPMPeak torque RPMMax engine speed
Alfa RomeoGiulia (952)GTAm 2.9 V66,500 rpm2,500 rpm6,750 rpm
AUDIS8 (D5)4.0 TFSI V86,000 rpm2,000-4,500 rpm6,250 rpm

Acceleration curve

Estimated speed over time for selected vehicles.

Acceleration and drag-race table
MetricAlfa RomeoGiulia (952)GTAm 2.9 V6AUDIS8 (D5)4.0 TFSI V8
Acceleration checkpoints
0-60 mph
0-97 km/h
3.5 s
3.6 s
0-100 km/h
0-62 mph
3.6 s
3.8 s
0-200 km/h
0-124 mph
8.8 s
11.2 s
Top speed
Unrestricted
315 km/h196 mph
Restricted
300 km/h186 mph
Likely limited
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Likely limited
Drag race simulation
60 ft
18 m
2.1 s
2.1 s
330 ft
101 m
5.1 s
5.2 s
1/8 mile
201 m
7.4 s
7.7 s
1000 ft
305 m
9.4 s
9.8 s
1/4 mile
402 m
11.0 s
11.6 s
Trap speed
1/4 mile
402 m
227 km/h
141 mph
203 km/h
126 mph

Power comparison

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

Chart data table
VehicleValue
Alfa RomeoGiulia (952)GTAm 2.9 V6
540 hp
403 kW
AUDIS8 (D5)4.0 TFSI V8
571 hp
426 kW

AUDI S8 (D5) 4.0 TFSI V8 has 31 hp more than Alfa Romeo Giulia (952) GTAm 2.9 V6.

The biggest power difference is between Alfa Romeo Giulia (952) GTAm 2.9 V6 and AUDI S8 (D5) 4.0 TFSI V8: 31 hp (23 kW).

Torque comparison

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

Chart data table
VehicleValue
Alfa RomeoGiulia (952)GTAm 2.9 V6
600 Nm
443 lb-ft
AUDIS8 (D5)4.0 TFSI V8
800 Nm
590 lb-ft

Curb weight comparison

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

Chart data table
VehicleValue
Alfa RomeoGiulia (952)GTAm 2.9 V6
1,580 kg
3,483 lb
AUDIS8 (D5)4.0 TFSI V8
2,230 kg
4,916 lb

Top speed without limiter comparison

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

Chart data table
VehicleValue
Alfa RomeoGiulia (952)GTAm 2.9 V6
Unrestricted
315 km/h196 mph
Restricted
300 km/h186 mph
AUDIS8 (D5)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
Alfa RomeoGiulia (952)GTAm 2.9 V63.6 s
AUDIS8 (D5)4.0 TFSI V83.8 s

Although AUDI S8 (D5) 4.0 TFSI V8 has more power, Alfa Romeo Giulia (952) GTAm 2.9 V6 is quicker from 0-100 km/h.

The biggest 0-100 km/h difference is between Alfa Romeo Giulia (952) GTAm 2.9 V6 and AUDI S8 (D5) 4.0 TFSI V8: 0.2 s.

Fuel consumption comparison

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

Chart data table
VehicleValue
Alfa RomeoGiulia (952)GTAm 2.9 V6
11.8 L/100 km
19.9 mpg US
23.9 mpg UK
AUDIS8 (D5)4.0 TFSI V8
11.4 L/100 km
20.6 mpg US
24.8 mpg UK

Power-to-weight comparison

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

Chart data table
VehicleValue
Alfa RomeoGiulia (952)GTAm 2.9 V6
342 hp/t
255 kW/t
2.9 kg/hp
AUDIS8 (D5)4.0 TFSI V8
256 hp/t
191 kW/t
3.9 kg/hp

Estimated range comparison

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

Chart data table
VehicleValue
Alfa RomeoGiulia (952)GTAm 2.9 V6
492 km
305 mi
AUDIS8 (D5)4.0 TFSI V8
719 km
447 mi

Performance spider chart

Radar chart comparing normalized performance and fuel-consumption scores.

Chart data table
VehiclePowerAccelerationTop speed
Alfa RomeoGiulia (952)GTAm 2.9 V6
540 hp
403 kW
3.6 s
Unrestricted
315 km/h196 mph
Restricted
300 km/h186 mph
AUDIS8 (D5)4.0 TFSI V8
571 hp
426 kW
3.8 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
Alfa RomeoGiulia (952)GTAm 2.9 V6
Power
540 hp
403 kW
0-100 km/h3.6 s
Top speed
Unrestricted
315 km/h196 mph
Restricted
300 km/h186 mph
Doors/seats
4 doors
2 seats
Trunk
480 L
17.0 cu ft
Length
4,669 mm
183.8 in
Height
1,445 mm
56.9 in
AUDIS8 (D5)4.0 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
5,179 mm
203.9 in
Height
1,474 mm
58.0 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
Alfa RomeoGiulia (952)GTAm 2.9 V6
Power
540 hp
403 kW
0-100 km/h3.6 s
Top speed
Unrestricted
315 km/h196 mph
Restricted
300 km/h186 mph
11.8 L/100 km
19.9 mpg US
23.9 mpg UK
AUDIS8 (D5)4.0 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
11.4 L/100 km
20.6 mpg US
24.8 mpg UK

Alfa Romeo Giulia (952) GTAm 2.9 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
Alfa RomeoGiulia (952)GTAm 2.9 V6
11.8 L/100 km
19.9 mpg US
23.9 mpg UK
3.6 s
AUDIS8 (D5)4.0 TFSI V8
11.4 L/100 km
20.6 mpg US
24.8 mpg UK
3.8 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
Alfa RomeoGiulia (952)GTAm 2.9 V6
342 hp/t
255 kW/t
2.9 kg/hp
11.8 L/100 km
19.9 mpg US
23.9 mpg UK
AUDIS8 (D5)4.0 TFSI V8
256 hp/t
191 kW/t
3.9 kg/hp
11.4 L/100 km
20.6 mpg US
24.8 mpg UK

Detailed score breakdown

Detailed score breakdown
VehicleAlfa RomeoGiulia (952)GTAm 2.9 V6AUDIS8 (D5)4.0 TFSI V8
Power
540 hp
403 kW
571 hp
426 kW
Torque
600 Nm
443 lb-ft
800 Nm
590 lb-ft
Acceleration
3.6 s
3.8 s
Top speed
Unrestricted
315 km/h196 mph
Restricted
300 km/h186 mph
Unrestricted
265 km/h165 mph
Restricted
250 km/h155 mph
Lightness
1,580 kg
3,483 lb
2,230 kg
4,916 lb
Fuel consumption
11.8 L/100 km
19.9 mpg US
23.9 mpg UK
11.4 L/100 km
20.6 mpg US
24.8 mpg UK
Practicality
Doors/seats
4 doors
2 seats
Trunk
480 L
17.0 cu ft
Length
4,669 mm
183.8 in
Height
1,445 mm
56.9 in
Doors/seats
4 doors
5 seats
Trunk
505 L
17.8 cu ft
Length
5,179 mm
203.9 in
Height
1,474 mm
58.0 in
Range score
492 km
305 mi
719 km
447 mi
CO2 score
274 g/km
260 g/km
Trunk score
480 L
17.0 cu ft
505 L
17.8 cu ft
Power-to-weight score
342 hp/t
255 kW/t
2.9 kg/hp
256 hp/t
191 kW/t
3.9 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
VehicleAlfa Romeo Giulia (952) GTAm 2.9 V6AUDI S8 (D5) 4.0 TFSI V8
Consumption11.8 L/100 km19.9 mpg US23.9 mpg UK11.4 L/100 km20.6 mpg US24.8 mpg UK
Cost / 100 km20.65 LC100 km19.95 LC100 km
Cost / 100 mi33.23 LC100 mi32.11 LC100 mi
Annual fuel used1,770 L468 US gal389 UK gal1,710 L452 US gal376 UK gal
Annual fuel cost3,098 LC/year2,993 LC/year

Head-to-head comparisons

Alfa Romeo Giulia (952) GTAm 2.9 V6

  • Is 650 kg lighter
  • Is 0.2 s quicker from 0-100 km/h
  • Has 50 km/h (31 mph) higher top speed
  • Has 86 hp/t better power-to-weight

Pros

  • Quickest 0-100 km/h in this comparison
  • Highest top speed
  • Lightest
  • Best power-to-weight ratio

Cons

  • Lowest power
  • Highest combined fuel consumption
  • Smallest trunk
  • Highest CO2 emissions

AUDI S8 (D5) 4.0 TFSI V8

  • Has 31 hp more
  • Has 200 Nm more
  • Uses 0.4 L/100 km less fuel
  • Has 228 km (142 mi) more estimated range
  • Has 25 L more trunk volume
  • Emits 14 g/km less CO2

Pros

  • Most powerful
  • Highest torque
  • Lowest combined fuel consumption
  • Best estimated range
  • Largest trunk

Cons

  • Slowest 0-100 km/h
  • Heaviest
  • Lowest top speed

Choose cars to compare

Brand
Model
Generation
Engine or modification
Alfa Romeo Giulia (952) GTAm 2.9 V6
AUDI S8 (D5) 4.0 TFSI V8
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2 vehicles selected

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