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AS3vsB120iPetrol
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  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • SpecsS3 · 120i

Audi S3 Sportback vs BMW 120i F40: 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.

compact · 2026 vs 2020 · Methodology
AudiPetrolFaster

S3 Sportback

333 hp · 420 Nm · 1,535 kg · 2026

VS
BMWPetrol

120i F40

178 hp · 280 Nm · 1,390 kg · 2020

Result · 0–100 km/h

AAudi S3 Sportback

4.64 s

Gap2.31 sin favour of S3 Sportback
BBMW 120i F40

6.95 s

Summary · Caralogy simulation
MeasureS3 Sportback120i F40Gap
0–100 km/h4.64 s6.95 s2.31 s · S3 Sportback
400 m standing start13.09 s15.05 s1.96 s · S3 Sportback
1,000 m standing start23.72 s27.31 s3.59 s · S3 Sportback
Top speed (electronically limited)250 km/h235 km/h15 km/h · S3 Sportback
Power-to-weight ratio4.61 kg/hp7.81 kg/hpbetter ratio · S3 Sportback

Watch the race

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

AudiPetrolS3 Sportback
Speed
0km/h
Timer
0,00s
Distance
0m
BMWPetrol120i F40
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.
StageS3 Sportback120i F40
0–30 km/h1.23 s1.65 s
0–50 km/h2.05 s2.78 s
0–80 km/h3.41 s4.91 s
0–100 km/h4.64 s6.95 s
0–120 km/h6.63 s9.38 s
0–160 km/h10.91 s16.65 s
0–200 km/h17.45 s29.52 s
400 m standing start13.09 s15.05 s
1,000 m standing start23.72 s27.31 s
Top speed limited250 km/h235 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

S3 Sportback

4,61kg/hpratio better by 3,20 kg/hp
CharacteristicValueDetail
Power333 hpPending
Torque420 Nm
Weight1 535 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
Gearbox7-speed S tronic
BMW

120i F40

7,81kg/hpcompensated by −145 kg
CharacteristicValueDetail
Power178 hp4 cyl
Torque280 Nm
Weight1 390 kgmanufacturer kerb weight
Drivetrain-
GearboxSeven-speed Steptronic dual-clutch transmission

The start: 0 to 100 km/h

Off the line, the S3 Sportback hits 100 km/h in 4.64 s versus 6.95 s for the 120i. At this point, the S3 Sportback leads by 2.31 s and sits roughly 18 m ahead.

From 100 km/h to 400 metres

At 200 metres, the S3 Sportback is doing 139 km/h against 123 km/h for the 120i. The gap is 1.30 s. The challenger starts to claw back ground.

At 400 metres standing start, the S3 Sportback crosses the line in 13.08 s versus 15.05 s. The 1.96 s gap represents roughly 80 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the S3 Sportback continues to build its lead. At 600 metres, it runs at 197 km/h versus 171 km/h. At 1,000 metres, the S3 Sportback finishes in 23.72 s versus 27.31 s, with a 3.59 s lead.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the S3 Sportback is capped at 250 (i.e. 155 mph - industry threshold) km/h, the 120i 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 (4.61 kg/hp vs 7.81 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 11.01 seconds. The 2.31 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.

Other duels you might be interested in

BMWVSAudi

M140i vs S3 Sportback

AudiVSBMW

A3 allstreet vs 120i

BMWVSAudi

M140i xDrive vs S3 Sportback

AudiVSBMW

A3 Sedan vs 120i

Frequently asked questions

Over 0–100 km/h, S3 Sportback wins (4,64 s vs 6,95 s).

S3 Sportback goes from 0 to 100 km/h in 4,64 seconds (calibrated simulation).

S3 Sportback: 333 hp, ratio 4,61 kg/hp. 120i F40: 178 hp, ratio 7,81 kg/hp.

S3 Sportback: 250 km/h. 120i F40: 235 km/h.