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AStelviovsB320iPetrol
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  • SpecsStelvio · 320i

Alfa Romeo Stelvio Quadrifoglio vs BMW 320i G20: 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.

family SUV · 2017 vs 2019 · Methodology
Alfa RomeoPetrolFaster

Stelvio Quadrifoglio

510 hp · 600 Nm · 1,830 kg · 2017

VS
BMWPetrol

320i G20

184 hp · 300 Nm · 1,460 kg · 2019

Result · 0–100 km/h

AAlfa Romeo Stelvio Quadrifoglio

3.83 s

Gap3.22 sin favour of Stelvio Quadrifoglio
BBMW 320i G20

7.05 s

Summary · Caralogy simulation
MeasureStelvio Quadrifoglio320i G20Gap
0–100 km/h3.83 s7.05 s3.22 s · Stelvio Quadrifoglio
400 m standing start11.86 s15.12 s3.26 s · Stelvio Quadrifoglio
1,000 m standing start21.59 s27.81 s6.22 s · Stelvio Quadrifoglio
Top speed (electronically limited)283 km/h234 km/h49 km/h · Stelvio Quadrifoglio
Power-to-weight ratio3.59 kg/hp7.93 kg/hpbetter ratio · Stelvio Quadrifoglio

Watch the race

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

Alfa RomeoPetrolStelvio Quadrifoglio
Speed
0km/h
Timer
0,00s
Distance
0m
BMWPetrol320i G20
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.
StageStelvio Quadrifoglio320i G20
0–30 km/h1.03 s1.38 s
0–50 km/h1.72 s2.44 s
0–80 km/h2.92 s4.84 s
0–100 km/h3.83 s7.05 s
0–120 km/h5.03 s9.85 s
0–160 km/h8.13 s18.13 s
0–200 km/h12.83 s33.99 s
400 m standing start11.86 s15.12 s
1,000 m standing start21.59 s27.81 s
Top speed283 km/h234 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

Stelvio Quadrifoglio

3,59kg/hpratio better by 4,35 kg/hp
CharacteristicValueDetail
Power510 hpPending
Torque600 Nm
Weight1 830 kgmanufacturer kerb weight
Drivetrain-
Gearbox8-speed automatic
BMW

320i G20

7,93kg/hpcompensated by −370 kg
CharacteristicValueDetail
Power184 hpPending
Torque300 Nm
Weight1 460 kgmanufacturer kerb weight
Drivetrain-
GearboxEight-speed Steptronic transmission

The start: 0 to 100 km/h

Off the line, the Stelvio Quadrifoglio hits 100 km/h in 3.83 s versus 7.05 s for the 320i. At this point, the Stelvio Quadrifoglio leads by 3.22 s and sits roughly 16 m ahead.

From 100 km/h to 400 metres

At 200 metres, the Stelvio Quadrifoglio is doing 156 km/h against 119 km/h for the 320i. The gap is 1.98 s. The challenger starts to claw back ground.

At 400 metres standing start, the Stelvio Quadrifoglio crosses the line in 11.86 s versus 15.11 s. The 3.25 s gap represents roughly 126 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the Stelvio Quadrifoglio continues to build its lead. At 600 metres, it runs at 216 km/h versus 166 km/h. At 1,000 metres, the Stelvio Quadrifoglio finishes in 21.59 s versus 27.81 s, with a 6.22 s lead.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the Stelvio Quadrifoglio is capped at 283 km/h, the 320i at 235 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 (3.59 kg/hp vs 7.93 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 11.54 seconds. The 3.22 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.

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Frequently asked questions

Over 0–100 km/h, Stelvio Quadrifoglio wins (3,83 s vs 7,05 s).

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

Stelvio Quadrifoglio: 510 hp, ratio 3,59 kg/hp. 320i G20: 184 hp, ratio 7,93 kg/hp.

Stelvio Quadrifoglio: 283 km/h. 320i G20: 234 km/h.