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ARS 3vsBX3Petrol
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  • PerformancePerformance0-100, top speed
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  • SpecsRS 3 · X3

Audi RS 3 Sportback vs BMW X3 M40i G01: 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

RS 3 Sportback

400 hp · 500 Nm · 1,565 kg · 2026

VS
BMWPetrol

X3 M40i G01

360 hp · 500 Nm · 1,845 kg · 2020

Result · 0–100 km/h

AAudi RS 3 Sportback

3.88 s

Gap0.91 sin favour of RS 3 Sportback
BBMW X3 M40i G01

4.78 s

Summary · Caralogy simulation
MeasureRS 3 SportbackX3 M40i G01Gap
0–100 km/h3.88 s4.78 s0.91 s · RS 3 Sportback
400 m standing start12.08 s13.02 s0.94 s · RS 3 Sportback
1,000 m standing start22.05 s23.68 s1.63 s · RS 3 Sportback
Top speed (electronically limited)250 km/h250 km/hSame
Power-to-weight ratio3.91 kg/hp5.13 kg/hpbetter ratio · RS 3 Sportback

Watch the race

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

AudiPetrolRS 3 Sportback
Speed
0km/h
Timer
0,00s
Distance
0m
BMWPetrolX3 M40i G01
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.
StageRS 3 SportbackX3 M40i G01
0–30 km/h1.04 s1.28 s
0–50 km/h1.74 s2.12 s
0–80 km/h2.85 s3.53 s
0–100 km/h3.88 s4.78 s
0–120 km/h5.07 s6.35 s
0–160 km/h8.84 s10.65 s
0–200 km/h13.81 s17.43 s
400 m standing start12.08 s13.02 s
1,000 m standing start22.05 s23.68 s
Top speed limited250 km/h250 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

RS 3 Sportback

3,91kg/hpratio better by 1,21 kg/hp
CharacteristicValueDetail
Power400 hpPending
Torque500 Nm
Weight1 565 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
Gearbox7-speed S tronic
BMW

X3 M40i G01

5,13kg/hpcompensated by −280 kg
CharacteristicValueDetail
Power360 hp6 cyl
Torque500 Nm
Weight1 845 kgmanufacturer kerb weight
DrivetrainIntegrale (AWD)
Gearbox8-speed Steptronic

The start: 0 to 100 km/h

Off the line, the RS 3 Sportback hits 100 km/h in 3.88 s versus 4.78 s for the X3 M40i. At this point, the RS 3 Sportback leads by 0.91 s and sits roughly 10 m ahead.

From 100 km/h to 400 metres

At 200 metres, the RS 3 Sportback is doing 150 km/h against 142 km/h for the X3 M40i. The gap is 0.68 s. The challenger starts to claw back ground.

At 400 metres standing start, the RS 3 Sportback crosses the line in 12.08 s versus 13.02 s. The 0.94 s gap represents roughly 45 m of track - a gap visible to the naked eye.

Beyond 400 metres: top speed comes into play

Past 400 metres, the RS 3 Sportback continues to build its lead. At 600 metres, it runs at 211 km/h versus 197 km/h. At 1,000 metres, the RS 3 Sportback finishes in 22.04 s versus 23.67 s, with a 1.63 s lead. Both vehicles have similar top speeds (250 (i.e. 155 mph - industry threshold) vs 250 (i.e. 155 mph - industry threshold) km/h), preventing any comeback.

What the numbers don’t tell you

Both rivals share the same electronic speed cap: the RS 3 Sportback and the X3 M40i are governed to 250 (i.e. 155 mph - industry threshold) km/h. At that speed, standard-fit tyres approach their safety threshold - an industrial ceiling common to most electric vehicles in this segment. Neither car shows its true aerodynamic potential in this duel.

With two combustion powertrains, the difference comes down to power-to-weight ratio (3.91 kg/hp vs 5.13 kg/hp) and transmission (Automatic vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 7.26 seconds. The 0.91 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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X3 M40i vs Macan GTS

Frequently asked questions

Over 0–100 km/h, RS 3 Sportback wins (3,88 s vs 4,78 s).

RS 3 Sportback goes from 0 to 100 km/h in 3,88 seconds (calibrated simulation).

RS 3 Sportback: 400 hp, ratio 3,91 kg/hp. X3 M40i G01: 360 hp, ratio 5,13 kg/hp.

RS 3 Sportback: 250 km/h. X3 M40i G01: 250 km/h.