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AGiuliaPetrolvsBP7BEV
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • SpecsGiulia · P7

Alfa Romeo Giulia Quadrifoglio vs Xpeng P7: 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.

saloon · 2024 vs 2020 · Methodology
Alfa RomeoPetrolFaster

Giulia Quadrifoglio

510 hp · 600 Nm · 1,580 kg · 2024

VS
XpengBEV

P7

424 hp · 655 Nm · 2,040 kg · 2020

Result · 0–100 km/h

AAlfa Romeo Giulia Quadrifoglio

3.93 s

Gap0.29 sin favour of Giulia Quadrifoglio
BXpeng P7

4.21 s

Summary · Caralogy simulation
MeasureGiulia QuadrifoglioP7Gap
0–100 km/h3.93 s4.21 s0.29 s · Giulia Quadrifoglio
400 m standing start11.73 s12.55 s0.82 s · Giulia Quadrifoglio
1,000 m standing start20.92 s25.25 s4.33 s · Giulia Quadrifoglio
Top speed (electronically limited)307 km/h170 km/h137 km/h · Giulia Quadrifoglio
Power-to-weight ratio3.10 kg/hp4.81 kg/hpbetter ratio · Giulia Quadrifoglio

Watch the race

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

Alfa RomeoPetrolGiulia Quadrifoglio
Speed
0km/h
Timer
0,00s
Distance
0m
XpengBEVP7
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.
StageGiulia QuadrifoglioP7
0–30 km/h1.18 s1.11 s · tight gap
0–50 km/h1.97 s1.85 s · tight gap
0–80 km/h3.17 s3.09 s · tight gap
0–100 km/h3.93 s4.21 s
0–120 km/h4.96 s5.64 s
0–160 km/h7.56 s9.67 s
0–200 km/h11.31 s-
400 m standing start11.73 s12.55 s
1,000 m standing start20.92 s25.25 s
Top speed307 km/h170 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.

Alfa Romeo

Giulia Quadrifoglio

3,10kg/hpratio better by 1,71 kg/hp
CharacteristicValueDetail
Power510 hpPending
Torque600 Nm
Weight1 580 kgmanufacturer kerb weight
Drivetrain-
Gearbox8-speed automatic
Xpeng

P7

4,81kg/hpcompensated by −460 kg
CharacteristicValueDetail
Power424 hpDual Permanent Magnet Synchronous Motor
Torque655 Nm
Weight2 040 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
GearboxSingle-speed fixed gear

The start: 0 to 100 km/h

Off the line, the Giulia Quadrifoglio hits 100 km/h in 3.93 s versus 4.22 s for the P7. Despite lacking instant torque, 510 hp of power compensates. Despite the faster sprint time, the P7 is 2 m further along the track at this moment: stronger low-speed acceleration offsets a slower run beyond 100 km/h.

From 100 km/h to 400 metres

At 200 metres, the Giulia Quadrifoglio is doing 164 km/h against 147 km/h for the P7. The gap is 0.30 s. The gap remains stable from the start.

At 400 metres standing start, the Giulia Quadrifoglio crosses the line in 11.73 s versus 12.54 s. The 0.82 s gap represents roughly 39 m of track - a gap visible to the naked eye.

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 170 km/h. At 1,000 metres, the Giulia Quadrifoglio finishes in 20.92 s versus 25.24 s, with a 4.33 s lead.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the Giulia Quadrifoglio is capped at 307 km/h, the P7 at 170 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 6.49 seconds. The 0.29 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.

Other duels you might be interested in

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Model 3 Performance vs P7

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Romeo Giulia Quadrifoglio vs M3 Competition Sedan

TeslaVSXpeng

Model 3 Performance vs P7

Frequently asked questions

Over 0–100 km/h, Giulia Quadrifoglio wins (3,93 s vs 4,21 s).

Giulia Quadrifoglio goes from 0 to 100 km/h in 3,93 seconds (calibrated simulation).

Giulia Quadrifoglio: 510 hp, ratio 3,10 kg/hp. P7: 424 hp, ratio 4,81 kg/hp.

Giulia Quadrifoglio: 307 km/h. P7: 170 km/h.