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AModelBEVvsBGiuliaPetrol
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  • PerformancePerformance0-100, top speed
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  • SpecsModel · Giulia

Tesla Model X P100D 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.

large SUV · 2017 vs 2016 · Methodology
TeslaBEVFaster

Model X P100D

762 hp · 967 Nm · 2,468 kg · 2017

VS
Alfa RomeoPetrol

Giulia Quadrifoglio

510 hp · 600 Nm · 1,580 kg · 2016

Result · 0–100 km/h

ATesla Model X P100D

3.05 s

Gap0.89 sin favour of Model X P100D
BAlfa Romeo Giulia Quadrifoglio

3.94 s

Summary · Caralogy simulation
MeasureModel X P100DGiulia QuadrifoglioGap
0–100 km/h3.05 s3.94 s0.89 s · Model X P100D
400 m standing start10.97 s11.74 s0.77 s · Model X P100D
1,000 m standing start20.13 s20.93 s0.80 s · Model X P100D
Top speed (electronically limited)250 km/h307 km/h57 km/h · Giulia Quadrifoglio
Power-to-weight ratio3.24 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.

TeslaBEVModel X P100D
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.
StageModel X P100DGiulia Quadrifoglio
0–30 km/h0.88 s1.19 s
0–50 km/h1.47 s1.98 s
0–80 km/h2.36 s3.18 s
0–100 km/h3.05 s3.94 s
0–120 km/h3.94 s4.97 s
0–160 km/h6.55 s7.57 s
0–200 km/h10.30 s11.32 s
400 m standing start10.97 s11.74 s
1,000 m standing start20.13 s20.93 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.

Tesla

Model X P100D

3,24kg/hpcompensated by −888 kg
CharacteristicValueDetail
Power762 hpDual Permanent Magnet Synchronous Motor
Torque967 Nm
Weight2 468 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
GearboxSingle-speed fixed gear
Alfa Romeo

Giulia Quadrifoglio

3,10kg/hpratio better by 0,14 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 Model X P100D hits 100 km/h in 3.05 s versus 3.94 s for the Giulia Quadrifoglio. The instant torque of 967 Nm from the electric motor makes the difference. At this point, the Model X P100D leads by 0.89 s and sits roughly 11 m ahead.

From 100 km/h to 400 metres

At 200 metres, the Model X P100D is doing 167 km/h against 164 km/h for the Giulia Quadrifoglio. The gap is 0.71 s. The challenger starts to claw back ground.

At 400 metres standing start, the Model X P100D crosses the line in 10.97 s versus 11.74 s. The 0.77 s gap represents roughly 43 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the Model X P100D continues to build its lead. At 600 metres, it runs at 231 km/h versus 228 km/h. At 1,000 metres, the Model X P100D finishes in 20.13 s versus 20.93 s, with a 0.80 s lead. Despite a higher top speed (307 km/h), the Giulia Quadrifoglio never recovers its launch deficit.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the Model X P100D is capped at 249 (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.

Instant electric torque gives an advantage off the line. The higher top speed of the combustion engine gives an advantage over longer distances. The distance at which one catches the other depends on the top speed differential.

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 5.51 seconds. The 0.89 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.

Other duels you might be interested in

TeslaVSBMW

Model X P100D vs iX xDrive50

AlfaVSBMW

Romeo Giulia Quadrifoglio vs M3 Competition

TeslaVSBMW

Model X P100D vs iX xDrive40

AlfaVSBMW

Romeo Giulia Quadrifoglio vs M3 Competition Sedan

Frequently asked questions

Over 0–100 km/h, Model X P100D wins (3,05 s vs 3,94 s).

Model X P100D goes from 0 to 100 km/h in 3,05 seconds (calibrated simulation).

Model X P100D: 762 hp, ratio 3,24 kg/hp. Giulia Quadrifoglio: 510 hp, ratio 3,10 kg/hp.

Model X P100D: 250 km/h. Giulia Quadrifoglio: 307 km/h.