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A120iPetrolvsBA3Diesel
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
  • ConsumptionConsumptionYearly cost
  • Specs120i · A3

BMW 120i F20LCI vs Audi A3 Sedan: 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 · 2018 vs 2026 · Methodology
BMWPetrolFaster

120i F20LCI

184 hp · 270 Nm · 1,375 kg · 2018

VS
AudiDiesel

A3 Sedan

116 hp · 300 Nm · 1,355 kg · 2026

Result · 0–100 km/h

ABMW 120i F20LCI

7.12 s

Gap2.75 sin favour of 120i
BAudi A3 Sedan

9.87 s

Summary · Caralogy simulation
Measure120i F20LCIA3 SedanGap
0–100 km/h7.12 s9.87 s2.75 s · 120i F20LCI
400 m standing start15.22 s17.21 s1.99 s · 120i F20LCI
1,000 m standing start27.53 s31.24 s3.71 s · 120i F20LCI
Top speed (electronically limited)225 km/h215 km/h10 km/h · 120i F20LCI
Power-to-weight ratio7.47 kg/hp11.68 kg/hpbetter ratio · 120i F20LCI

Watch the race

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

BMWPetrol120i F20LCI
Speed
0km/h
Timer
0,00s
Distance
0m
AudiDieselA3 Sedan
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.
Stage120i F20LCIA3 Sedan
0–30 km/h1.79 s2.22 s
0–50 km/h2.99 s3.75 s
0–80 km/h5.16 s6.86 s
0–100 km/h7.12 s9.87 s
0–120 km/h9.70 s13.82 s
0–160 km/h16.79 s26.28 s
0–200 km/h29.61 s58.04 s
400 m standing start15.22 s17.21 s
1,000 m standing start27.53 s31.24 s
Top speed225 km/h215 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.

BMW

120i F20LCI

7,47kg/hpratio better by 4,21 kg/hp
CharacteristicValueDetail
Power184 hp4 cyl
Torque270 Nm
Weight1 375 kgmanufacturer kerb weight
Drivetrain-
Gearbox8-speed Steptronic
Audi

A3 Sedan

11,68kg/hp
CharacteristicValueDetail
Power116 hpPending
Torque300 Nm
Weight1 355 kgmanufacturer kerb weight
DrivetrainTraction
Gearbox6-speed manual gearbox

The start: 0 to 100 km/h

Off the line, the 120i hits 100 km/h in 7.12 s versus 9.87 s for the A3 Sedan. At this point, the 120i leads by 2.75 s and sits roughly 21 m ahead.

From 100 km/h to 400 metres

At 200 metres, the 120i is doing 122 km/h against 108 km/h for the A3 Sedan. The gap is 1.28 s. The challenger starts to claw back ground.

At 400 metres standing start, the 120i crosses the line in 15.22 s versus 17.21 s. The 1.99 s gap represents roughly 72 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the 120i continues to build its lead. At 600 metres, it runs at 170 km/h versus 150 km/h. At 1,000 metres, the 120i finishes in 27.52 s versus 31.24 s, with a 3.72 s lead. Both vehicles have similar top speeds (225 vs 215 km/h), preventing any comeback.

What the numbers don’t tell you

Electronically capped at 225 km/h, the 120i never reaches its natural aerodynamic ceiling in this duel. That’s not a physical limit of the motor - it’s a deliberate manufacturer decision, typically tied to standard-fit tyre ratings or model-range positioning.

With two combustion powertrains, the difference comes down to power-to-weight ratio (7.47 kg/hp vs 11.68 kg/hp) and transmission (Automatic vs Manual).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 16.25 seconds. The 2.75 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 120i F20LCI
BMW 118d xDriveBMW 120d xDriveBMW 120d

Other duels you might be interested in

AudiVSBMW

A3 allstreet vs 120i

AudiVSBMW

A3 Sedan vs 116d

AudiVSBMW

A3 Sedan vs 120i

AudiVSBMW

A3 Sedan vs 116d

Frequently asked questions

Over 0–100 km/h, 120i F20LCI wins (7,12 s vs 9,87 s).

120i F20LCI goes from 0 to 100 km/h in 7,12 seconds (calibrated simulation).

120i F20LCI: 184 hp, ratio 7,47 kg/hp. A3 Sedan: 116 hp, ratio 11,68 kg/hp.

120i F20LCI: 225 km/h. A3 Sedan: 215 km/h.