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AS8vsBGiuliaPetrol
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • SpecsS8 · Giulia

Audi S8 vs Alfa Romeo Giulia Quadrifoglio: which is truly faster?

Simulated drag race 0 → 1,000 m in real time. Synchronised speed counters and stopwatch. Physics calibration on 7 manufacturer measurements.

limousine · 2025 vs 2024 · Methodology
AudiPetrol

S8

571 hp · 800 Nm · 2,220 kg · 2025

VS
Alfa RomeoPetrol

Giulia Quadrifoglio

510 hp · 600 Nm · 1,580 kg · 2024

Result · 0–100 km/h

AAudi S8

3.83 s

Gap0.10 sNot a significant gap
BAlfa Romeo Giulia Quadrifoglio

3.93 s

Summary · Caralogy simulation
MeasureS8Giulia QuadrifoglioGap
0–100 km/h3.83 s3.93 s0.10 s · S8
400 m standing start11.81 s11.73 s0.08 s · Giulia Quadrifoglio
1,000 m standing start21.27 s20.92 s0.35 s · Giulia Quadrifoglio
Top speed (electronically limited)250 km/h307 km/h57 km/h · Giulia Quadrifoglio
Power-to-weight ratio3.89 kg/hp3.10 kg/hpbetter ratio · Giulia Quadrifoglio

Watch the race

Standing-start drag race, calibrated on manufacturer splits. The gap shows at each stage.

AudiPetrolS8
Speed
0km/h
Timer
0,00s
Distance
0m
Alfa RomeoPetrolGiulia Quadrifoglio
Speed
0km/h
Timer
0,00s
Distance
0m
100 m
200 m
300 m
400 m
500 m
600 m
700 m
800 m
900 m
1000 m
0m → 1000m
Gap0m

Stage-by-stage comparison

Simulated performance at each stage. Best value in bold.
StageS8Giulia Quadrifoglio
0–30 km/h1.07 s · tight gap1.18 s
0–50 km/h1.78 s1.97 s
0–80 km/h2.88 s3.17 s
0–100 km/h3.83 s · tight gap3.93 s
0–120 km/h4.97 s4.96 s · tight gap
0–160 km/h7.99 s7.56 s
0–200 km/h12.24 s11.31 s
400 m standing start11.81 s11.73 s · tight gap
1,000 m standing start21.27 s20.92 s
Top speed limited250 km/h307 km/h

Parameters and assumptions

Simulation

Start
Standing, straight line
Surface
Dry asphalt, 23°C
Wind
None
Driver
1 person, 75 kg

Calibration

Splits
0–100, 0–200 manufacturer
Power curve
Real measurement (Caralogy)
VMax
Manufacturer limited
Transmission
Losses integrated in model

Physics model calibrated on manufacturer splits. The limited top speed is not the real aerodynamic top speed of the vehicles.

Under the bonnet

Manufacturer technical specifications. The power-to-weight ratio is the key physical factor in a drag race.

Audi

S8

3,89kg/hpcompensated by −640 kg
CharacteristicValueDetail
Power571 hpPending
Torque800 Nm
Weight2 220 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
Gearbox8-speed tiptronic
Alfa Romeo

Giulia Quadrifoglio

3,10kg/hpratio better by 0,79 kg/hp
CharacteristicValueDetail
Power510 hpPending
Torque600 Nm
Weight1 580 kgmanufacturer kerb weight
Drivetrain-
Gearbox8-speed automatic

The start: 0 to 100 km/h

Off the line, the S8 hits 100 km/h in 3.83 s versus 3.93 s for the Giulia Quadrifoglio. The 0.10 s gap is negligible: both vehicles are neck and neck.

From 100 km/h to 400 metres

At 200 metres, the S8 is doing 157 km/h against 164 km/h for the Giulia Quadrifoglio. The gap is 0.06 s. The gap remains stable from the start.

At 400 metres standing start, the Giulia Quadrifoglio crosses the line in 11.73 s versus 11.81 s. The 0.08 s gap represents roughly 4 m of track - barely a car length.

Beyond 400 metres: top speed comes into play

Past 400 metres, the Giulia Quadrifoglio continues to build its lead. At 600 metres, it runs at 228 km/h versus 222 km/h. At 1,000 metres, the Giulia Quadrifoglio finishes in 20.92 s versus 21.26 s, with a 0.35 s lead.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the S8 is capped at 250 (i.e. 155 mph - industry threshold) km/h, the Giulia Quadrifoglio at 307 km/h. This isn’t a physical engine limit - it’s a manufacturer choice, usually for tyre safety or homologation reasons. Neither car reaches its true aerodynamic top speed.

With two combustion powertrains, the difference comes down to power-to-weight ratio (3.89 kg/hp vs 3.10 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 5.62 seconds. The 0.10 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.

Compare with other alternatives

Swap one of the two models to explore an equivalent duel in the same segment.

Instead of S8
BMW M3 CompetitionBMW M3 Competition xDriveBMW M3 Competition Sedan

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S8 vs Panamera Turbo

AlfaVSBMW

Romeo Giulia Quadrifoglio vs M3 Competition Sedan

Frequently asked questions

Over 0–100 km/h, S8 and Giulia Quadrifoglio are neck and neck (3,83 s vs 3,93 s, no significant gap).

S8 goes from 0 to 100 km/h in 3,83 seconds (calibrated simulation).

S8: 571 hp, ratio 3,89 kg/hp. Giulia Quadrifoglio: 510 hp, ratio 3,10 kg/hp.

S8: 250 km/h. Giulia Quadrifoglio: 307 km/h.